Abrégé

The present application belongs to the technical field of functional auxiliaries of concrete materials, and in particular relates to an oxidized lignin polycarboxylate, and further discloses the use thereof in preparation of a high-range water reducing agent. According to the preparation method for the oxidized lignin polycarboxylate of the present application, lignin is oxidized and modified under an alkaline condition, and the oxidized lignin, small molecular monomers of carboxylic acids, and an alkenyl polyglycol ether acting as a monomer are polymerized to prepare the oxidized lignin polycarboxylate, which can be used as the high-range water reducing agent. Compared with a traditional polycarboxylic acid water reducing agent, in the oxidized lignin polycarboxylate water reducing agent of the present application, the traditional small molecular monomers of carboxylic acids are fully or partially replaced by lignin-based carboxylic acid monomers, such that the slump retention performance of the polycarboxylate water reducing agent is improved while the cost thereof is reduced, which achieves obvious cost benefits and environmental protection benefits.

Classes IPC  ?

• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals

Abrégé

The present application relates to the technical field of chemical apparatuses, and provides a continuous production device and a continuous production line for polymer polyol. The continuous production device comprises a tubular reactor, a tubular ager, material tubes, and a feeding device. The lower part of the tubular reactor is provided with a first feed port, and the upper part of the tubular reactor is provided with a first discharge port; a feed tube is connected to the first feed port; the lower part of the tubular ager is provided with a second feed port, and the upper part of the tubular ager is provided with a second discharge port; the second feed port is connected to the first discharge port; multiple material tubes are arranged in inner cavities of the tubular reactor and the tubular ager in parallel at intervals, the lower ends of the material tubes are communicated with the first feed port, and the upper ends of the material tubes are communicated with the first discharge port; and the feeding device is disposed on the feed tube. The present application can solve the problem in the prior art of incomplete reaction or excessive reaction of a reaction kettle device, and has the effect of sufficient and thorough reaction.

Classes IPC  ?

• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals

Abrégé

The present disclosure belongs to the technical field of preparation of functional materials, and in particular relates to a grinding aid for cement and a preparation method therefor. The components of the grinding aid include a modified alcohol amine of a specific structure and a polycarboxylic acid polymer of a specific structure, and a mass ratio of the modified alcohol amine to the polycarboxylic acid polymer is (1-10):(40-49), and the early strength of the cement can be increased, the water consumption can be reduced, and the fluidity can be improved when the grinding aid is used in cement. The present disclosure adopts the combined action of the modified alcohol amine and the polycarboxylic acid polymer in specific ratios and structures, so that a synergistic effect can be achieved, and the respective performance advantages can be fully exerted.

Classes IPC  ?

• C04B 40/00 - Procédés, en général, pour influencer ou modifier les propriétés des compositions pour mortiers, béton ou pierre artificielle, p. ex. leur aptitude à prendre ou à durcir
• C04B 24/12 - Composés contenant de l'azote
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C04B 28/14 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments de sulfate de calcium

Abrégé

The present application relates to the technical field of polyether-terminated modified silicone oil, and particularly relates to a hydrogen-terminated silicone oil, a polyether-terminated modified silicone oil, preparation methods therefor, and uses thereof. The preparation method for the hydrogen-terminated silicone oil provided by the present invention comprises the following step: reacting tetramethyldisiloxane and methylcyclosiloxane in the presence of bentonite, which is modified by an acid and a titanium salt, to obtain hydrogen-terminated silicone oil. The preparation method for the hydrogen-terminated silicone oil provided by the present invention uses the bentonite modified by an acid and a titanium salt as a catalyst and uses tetramethyldisiloxane and methylcyclosiloxane as raw materials, wherein the bentonite modified by an acid and a titanium salt does not change the pH value of the system during a reaction process. Meanwhile the prepared hydrogen-terminated silicone oil has higher activities because Si-H bonds are better maintained. Therefore, during a hydrosilylation reaction as a second step, the reaction is more thorough, and an obtained product is therefore more clear and transparent and contains no by-product.

Classes IPC  ?

• C08G 77/12 - Polysiloxanes contenant du silicium lié à l'hydrogène
• C08G 77/08 - Procédés de préparation caractérisés par les catalyseurs utilisés
• C08G 77/46 - Polymères séquencés ou greffés contenant des segments de polysiloxanes contenant des segments de polyéthers
• C09D 7/65 - Adjuvants macromoléculaires
• C09D 11/03 - Encres d’imprimerie caractérisées par des particularités autres que la nature chimique du liant

Abrégé

The present application belongs to the technical field of chemical water-based system materials, particularly relates to an alkynyl alcohol ether, and further discloses a method for synthesizing same and use thereof. According to the method for preparing the alkynyl alcohol ether of the present application, on the basis of carrying out a ring-opening polymerization reaction synthesis process by taking traditional alkynol and ethylene oxide and/or propylene oxide as reactants, a supported solid base catalyst is selected for catalytic reaction, thereby avoiding direct contact of a strong base or an organic base catalyst with an acetylenic bond. The resulting product is high in three-bond reservation rate, and it has better wettability and lower chromaticity since the complete alkynyl is reserved.

Classes IPC  ?

• C08G 65/28 - Éthers cycliques et composés hydroxylés
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés

Abrégé

The present application belongs to the technical field of concrete admixture preparation, and particularly relates to a crosslinked polycarboxylic acid water reducer and a preparation method therefor. The method comprises: (I) preparing a hydroxyalkyl-terminated vinyl polyoxypropylene polyoxyethylene ether; (II) preparing a trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate; and (III) carrying out a free radical polymerization reaction of the hydroxyalkyl-terminated vinyl polyoxypropylene polyoxyethylene ether and the trimethylolpropane polyoxyethylene polyoxypropylene ether triacrylate to prepare a crosslinked polycarboxylic acid water reducer. During the polymerization process, the reaction rate is controllable, and heat release is mild and stable, such that the phenomena of location explosion, etc., caused by a high temperature during the polymerization reaction process is avoided, and the reaction speed can be stably controlled. A polycarboxylic acid water reducer having a high water reducing rate, high collapse retention, good wrapping property and good workability is obtained under room temperature; the water reducer can be used in concrete without adversely affecting the properties of the concrete; in addition, the preparation method for the water reducer is suitable for most production lines.

Classes IPC  ?

• C08F 299/02 - Composés macromoléculaires obtenus par des interréactions de polymères impliquant uniquement des réactions entre des liaisons non saturées carbone-carbone, en l'absence de monomères non macromoléculaires à partir de polycondensats non saturés
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C04B 103/30 - Réducteurs d'eau, plastifiants, entraîneurs d'air

Abrégé

The present application belongs to the technical field of polymer material preparation, and particularly relates to a template agent, and a preparation method therefor and the use thereof. The raw materials of the template agent comprise a polyamine, a dialkene and a hydrogen halide, wherein the dialkene is a symmetric monomer. The template agent is a nanometer narrow-band dendrimer template agent, and has a large specific surface area and a narrow molecular weight distribution. The raw materials of the template agent comprise a dialkene, which is a symmetric monomer and can directly react with a polyamine. The addition of a dialkene with a symmetrical structure renders the product of an addition reaction unique; moreover, the amount of by-products of the whole reaction is relatively low, such that the yield of the template agent is improved, and a template agent with a dendrimer structure is easier to obtain.

Classes IPC  ?

• C08G 83/00 - Composés macromoléculaires non prévus dans les groupes
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals
• C08F 220/06 - Acide acryliqueAcide méthacryliqueLeurs sels métalliques ou leurs sels d'ammonium
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone

Abrégé

The present invention belongs to the technical field of functional material preparation, and specifically relates to a grinding aid for cement and a preparation method therefor. The grinding aid comprises the components of a modified alcohol amine with a specific structure and a polycarboxylic acid polymer, wherein the mass ratio of the modified alcohol amine to the polycarboxylic acid polymer is (1-10):(40-49). When the grinding aid is used in cement, the early strength of the cement can be improved, the water consumption can be reduced, and the fluidity can be improved. According to the present invention, by using the combination of the modified alcohol amine with a specific structure and the polycarboxylic acid polymer in a specific ratio, a synergistic effect can be achieved, and the respective performance advantages are brought into full play.

Classes IPC  ?

• C04B 103/52 - Adjuvants de broyage

Abrégé

The present application relates to the technical field of concrete admixture preparation, and specifically relates to a polycarboxylate superplasticizer and a preparation method therefor. The method comprises (1) preparing hydroxyethyl-terminated vinyl polyoxypropylene polyoxyethylene ether; and (2) preparing a polycarboxylate superplasticizer, a double-end vinyl ether small monomer containing alkoxy, and containing double bonds at two ends; and optionally, the vinyl ether monomer being ethylene glycol divinyl ether and/or diethylene glycol divinyl ether. The content of an ultra-high molecular weight copolymer in the polycarboxylate superplasticizer prepared by the method is reduced, the relative molecular weight distribution is normal distribution, the molecular weight distribution is narrow, and almost no strong-polarity ultra-high molecular weight by-product exists; and meanwhile, a reaction rate is controllable in a polymerization reaction process, and heat release is mild and stable, such that a local implosion phenomenon caused by high temperature in the polymerization reaction process is avoided, and a monomer conversion rate can be increased to 95% or above.

Classes IPC  ?

• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals
• C08F 216/12 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un radical alcool, éther, aldéhyde, cétone, acétal ou cétal par un radical éther
• C08F 220/06 - Acide acryliqueAcide méthacryliqueLeurs sels métalliques ou leurs sels d'ammonium
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C04B 24/32 - Polyéthers, p. ex. polyéther de glycol et d'alkylphénol
• C04B 103/30 - Réducteurs d'eau, plastifiants, entraîneurs d'air

Abrégé

A sugar drawing apparatus and a polyether polyol production system comprising same. The sugar drawing apparatus comprises: a sugar storage container, a feed port being provided on the upper end of the sugar storage container and a sugar storage cavity being provided within the sugar storage container: a drawing pipeline having one end extending into the sugar storage cavity and the other end thereof extending out of the sugar storage container and communicated with a reaction container, and used for transferring sugar in the sugar storage cavity into the reaction container, and a sleeve sleeved on the outside of the drawing pipeline, one end of the sleeve extending into the sugar storage cavity and the other end thereof extending out of the sugar storage container and communicated with ambient air, and a flow channel for air to flow through being reserved between the sleeve and the drawing pipeline.

Classes IPC  ?

• C13B 50/00 - Présentations du sucre, p. ex. en poudre, en morceaux ou en siropMise en forme du sucre

Abrégé

A reaction apparatus, comprising: a reaction kettle; a circulation loop, comprising a circulation pipeline and a circulator pump provided on the circulation pipeline, a discharging end of the circulator pump being communicated with the top of the reaction kettle by means of a circulation valve and a charging end of the circulator pump being communicated with the bottom of the reaction kettle by means of a block valve; a feeding loop, comprising a feeding pipeline and a bypass pipeline, the feeding pipeline being provided between the block valve and the circulator pump and being communicated with the circulation pipeline, the bypass pipeline being provided with a control valve, and one end of the bypass pipeline being communicated with the discharging end of the circulator pump and the other end thereof being communicated with the bottom of the reaction kettle; and a discharging loop, comprising a discharging pipeline provided between the circulator pump and the circulation valve and communicated with the circulation pipeline, the discharging pipeline being provided with a discharging valve.

Classes IPC  ?

• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation

Abrégé

An ammonia-containing tail gas absorption system, comprising at least two sets of absorption devices, wherein at least two transport pipelines are provided at inlets of some of the absorption devices, and the transport pipelines are used to communicate the absorption devices with an ammonia-containing tail gas outlet of a reactor or other absorption devices. Valves are provided on the transport pipelines, and the valves are used to control the connection and disconnection of the transport pipelines so as to switch the series-parallel relationship between the sets of absorption devices.

Classes IPC  ?

• B01D 53/18 - Unités d'absorptionDistributeurs de liquides
• B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption
• B01D 53/58 - Ammoniac
• C01C 1/12 - Séparation d'ammoniac des gaz et vapeurs

Abrégé

The present disclosure relates to the technical field of the production of polyether polyols, and provided is a process for producing a low-odor polyether polyol, the process comprising the following steps: an initial polymerization reaction step, involving: adding an initiator and an alkaline catalyst into a reaction container, and then inputting an epoxy olefin into the reaction container for a polymerization reaction to obtain a mixed material; a circulation distribution polymerization step, involving: taking the mixed material, outputting same, splitting same and then spraying same into the reaction container at a high speed, circulating the above operations while inputting the epoxy olefin and maintaining a rotation speed of 90-105 r/min for stirring the mixed material that has been sprayed into the reaction container, continuing to proceed with the polymerization reaction, and curing same to obtain a crude polyether polyol; and a refining step, involving: taking the crude polyether polyol for a neutralization or dilution treatment to obtain a mixed solution of the crude polyether polyol, then aggregating a mixed solution stream by means of a hydrophilic medium, settling and separating to obtain the low-odor polyether polyol. The production process of the present disclosure has the advantages of a short processing time, a high yield and a low VOC content.

Classes IPC  ?

• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C08G 65/30 - Traitement de post-polymérisation, p. ex. obtention, purification, séchage

Abrégé

A reaction apparatus, comprising: a reaction kettle (1); a circulation loop, comprising a circulation pipeline (2) and a circulator pump (4) provided on the circulation pipeline (2), a discharging end of the circulator pump (4) being communicated with the top of the reaction kettle (1) by means of a circulation valve (3) and a charging end of the circulator pump (4) being communicated with the bottom of the reaction kettle (1) by means of a block valve (9); a feeding loop, comprising a feeding pipeline (7) and a bypass pipeline (5), the feeding pipeline (7) being provided between the block valve (9) and the circulator pump (4) and being communicated with the circulation pipeline (2), the bypass pipeline (5) being provided with a control valve (6), and one end of the bypass pipeline (5) being communicated with the discharging end of the circulator pump (3) and the other end thereof being communicated with the bottom of the reaction kettle (1); and a discharging loop, comprising a discharging pipeline (10) provided between the circulator pump (4) and the circulation valve (3) and communicated with the circulation pipeline (2), the discharging pipeline (10) being provided with a discharging valve (11).

Classes IPC  ?

• B01F 7/18 - Mélangeurs à agitateurs tournant dans des récipients fixes; Pétrins avec agitateurs tournant autour d'un axe vertical à pales ou à bras
• B01F 15/02 - Mécanismes d'alimentation ou d'évacuation

Abrégé

A sugar drawing apparatus and a polyether polyol production system comprising same. The sugar drawing apparatus comprises: a sugar storage container (1), a feed port (11) being provided on the upper end of the sugar storage container (1) and a sugar storage cavity (12) being provided within the sugar storage container (1); a drawing pipeline (2) having one end extending into the sugar storage cavity (12) and the other end extending out of the sugar storage container (1) and communicated with a reaction container, and used for transferring sugar in the sugar storage cavity (12) into the reaction container; and a sleeve (3) sleeved on the outside of the drawing pipeline (2), one end of the sleeve (3) extending into the sugar storage cavity (12) and the other end thereof extending out of the sugar storage container (1) and communicated with ambient air, and a flow channel for air to flow through being reserved between the sleeve (3) and the drawing pipeline (2).

Classes IPC  ?

• B01J 3/02 - Dispositifs d'alimentation ou d'évacuation appropriés
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation

Abrégé

An ammonia-containing tail gas absorption system, comprising at least two sets of absorption devices, wherein at least two transport pipelines are provided at inlets of some of the absorption devices, and the transport pipelines are used to communicate the absorption devices with an ammonia-containing tail gas outlet of a reactor or other absorption devices. Valves are provided on the transport pipelines, and the valves are used to control the connection and disconnection of the transport pipelines so as to switch the series-parallel relationship between the sets of absorption devices.

Classes IPC  ?

• B01D 53/18 - Unités d'absorptionDistributeurs de liquides
• C01C 1/12 - Séparation d'ammoniac des gaz et vapeurs
• B01D 53/58 - Ammoniac

Abrégé

The present invention relates to the technical field of the production of polyether polyols, and provided is a process for producing a low-odor polyether polyol, the process comprising the following steps: an initial polymerization reaction step, involving: adding an initiator and an alkaline catalyst into a reaction container, and then inputting an epoxy olefin into the reaction container for a polymerization reaction to obtain a mixed material; a circulating distribution polymerization step, involving: taking the mixed material, outputting same, splitting same and then spraying same into the reaction container at a high speed, circulating the above operations while inputting the epoxy olefin and maintaining a rotation speed of 90-105 r/min for stirring the mixed material that has been sprayed into the reaction container, continuing to proceed with the polymerization reaction, and curing same to obtain a crude polyether polyol; and a refining step, involving: taking the crude polyether polyol and subjecting same to a neutralization or dilution treatment to obtain a mixed solution of the crude polyether polyol, then aggregating a mixed solution stream by means of a hydrophilic medium, setting same and separating same to obtain the low-odor polyether polyol. The production process of the present invention has the advantages of a short processing time, a high yield and a low VOC content.

Classes IPC  ?

• C08G 65/28 - Éthers cycliques et composés hydroxylés
• C08G 65/30 - Traitement de post-polymérisation, p. ex. obtention, purification, séchage
• C08G 18/48 - Polyéthers
• C07C 41/03 - Préparation d'éthers à partir d'oxiranes par réaction d'un cycle oxirane avec un groupe hydroxyle
• B01J 19/26 - Réacteurs du type à injecteur, c.-à-d. dans lesquels la distribution des réactifs de départ dans le réacteur est effectuée par introduction ou injection au moyen d'injecteurs
• B01J 10/00 - Procédés chimiques généraux faisant réagir un liquide avec des milieux gazeux autrement qu'en présence de particules solidesAppareillage spécialement adapté à cet effet

Abrégé

Application of a Mannich base in a flame-retardant polyurethane material is provided. The Mannich base has a structure represented by a formula (I). In the Mannich base, flame-retardant groups, i.e., halogens are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant elements, i.e., halogens and nitrogen are introduced into synthesized polyether polyol, giving the synthesized polyether polyol good flame retardance. The amount of active hydrogen in the Mannich base is small so that occurrence of side reactions during the synthesis of the polyether polyol is reduced, and the viscosity of the flame-retardant polyether polyol is lowered. Due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced and even avoided during the synthesis. A preparation method of the Mannich base is also provided.

Classes IPC  ?

• C08G 18/48 - Polyéthers
• C09K 21/14 - Substances macromoléculaires
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/70 - Polymérisats d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs caractérisés par les isocyanates ou isothiocyanates utilisés
• C07C 213/02 - Préparation de composés contenant des groupes amino et hydroxy, amino et hydroxy éthérifiés ou amino et hydroxy estérifiés liés au même squelette carboné par des réactions impliquant la formation de groupes amino à partir de composés contenant des groupes hydroxy ou des groupes hydroxy éthérifiés ou estérifiés
• C07C 215/28 - Composés contenant des groupes amino et hydroxy liés au même squelette carboné ayant des groupes hydroxy et des groupes amino liés à des atomes de carbone acycliques du même squelette carboné le squelette carboné étant non saturé et contenant des cycles aromatiques à six chaînons
• C08G 18/50 - Polyéthers contenant des hétéro-atomes autres que l'oxygène
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C07C 215/50 - Composés contenant des groupes amino et hydroxy liés au même squelette carboné ayant des groupes hydroxy liés à des atomes de carbone d'au moins un cycle aromatique à six chaînons et des groupes amino liés à des atomes de carbone acycliques ou à des atomes de carbone de cycles autres que des cycles aromatiques à six chaînons du même squelette carboné avec des groupes amino reliés au cycle aromatique à six chaînons, ou au système cyclique condensé contenant ce cycle par l'intermédiaire de chaînes carbonées qui ne sont pas substituées de plus par des groupes hydroxy avec des groupes amino et le cycle aromatique à six chaînons, ou le système cyclique condensé contenant ce cycle, liés au même atome de carbone de la chaîne carbonée
• C08J 9/04 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement utilisant des gaz de gonflage produits par un agent de gonflage introduit au préalable

Abrégé

A flame-retardant polyether polyol is provided, including a Mannich base and an epoxide. The epoxide is selected from ethylene oxide, propylene oxide and butylene oxide. The Mannich base has a structure represented by a formula (I). In the Mannich base, flame-retardant groups, i.e., halogens are introduced at the second, fourth and sixth positions of a phenyl group, and flame-retardant elements, i.e., halogens and nitrogen are introduced into synthesized polyether polyol. The amount of active hydrogen in the Mannich base is small so that side reactions during synthesis of the polyether polyol are reduced, and the viscosity of the polyether polyol is lowered. A flame-retardant polyurethane material is also provided, synthesized from raw materials comprising the above-mentioned flame-retardant polyether polyol and an isocyanate. Due to autocatalytic performance of tertiary amido in the flame-retardant polyether polyol, use of a catalyst can be reduced and even avoided during the synthesis.

Classes IPC  ?

• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C08G 18/26 - Catalyseurs contenant des composés métalliques du plomb
• C08G 18/48 - Polyéthers
• C08K 5/00 - Emploi d'ingrédients organiques
• C08G 18/50 - Polyéthers contenant des hétéro-atomes autres que l'oxygène
• C08K 5/17 - AminesComposés d'ammonium quaternaire

Abrégé

A preparation method of a powdery polycarboxylate superplasticizer is provided, including: mixing a superplasticizer monomer with water to produce a mixture, heating and melting the mixture to produce a melt system; carrying out a bulk polymerization reaction by adding an initiator, a chain transfer agent and an unsaturated carboxylic acid into the melt system, forming a polycarboxylate superplasticizer precursor; and neutralizing and pulverizing the polycarboxylate superplasticizer precursor to produce a powdery polycarboxylate superplasticizer. Water is added in the bulk polymerization and reacts with the superplasticizer monomer and the unsaturated carboxylic acid. While the bulk polymerization reaction is guaranteed to be efficiently carried out and the solid polycarboxylate superplasticizer is formed, the viscosity of a bulk polymerization reaction system is reduced. The superplasticizer is suitable for dry-mixed mortar, high-efficiency concrete and other products.

Classes IPC  ?

• C08F 220/04 - AcidesLeurs sels métalliques ou leurs sels d'ammonium
• C08F 220/06 - Acide acryliqueAcide méthacryliqueLeurs sels métalliques ou leurs sels d'ammonium
• C08F 222/04 - Anhydrides, p. ex. anhydrides cycliques
• C08F 222/06 - Anhydride maléique
• C08F 216/04 - Composés acycliques
• C08F 216/08 - Alcool allylique
• C08F 216/12 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un radical alcool, éther, aldéhyde, cétone, acétal ou cétal par un radical éther
• C08F 226/02 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par une liaison simple ou double à l'azote ou par un hétérocycle contenant de l'azote par une simple ou une double liaison à l'azote
• C08F 226/04 - Diallylamine
• C08J 3/12 - Pulvérisation ou granulation
• C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C08F 20/06 - Acide acryliqueAcide méthacryliqueLeurs sels métalliques ou leurs sels d'ammonium
• C08F 22/06 - Anhydride maléique
• C04B 103/32 - Superplastifiants
• C08F 222/02 - AcidesLeurs sels métalliques ou leurs sels d'ammonium
• C08F 216/14 - Monomères contenant un seul radical aliphatique non saturé

Abrégé

A composition capable of substituting the use of styrene-acrylonitrile copolymer POP, comprising polyether polyol A having a hydroxyl value of 100-1000 mgKOH/g and a functionality of 4-8, and a polymer polyol having a hydroxyl value of 12-100 mgKOH/g, a functionality of 2-4, and a solid content of 4-45%, the branches thereof not containing polystyrene units. The polyurethane foam produced using the present composition to substitute the use of traditional styrene-acrylonitrile copolymer POP avoids the problem of styrene volatilisation due to the absence of styrene, and the produced polyurethane foam also maintains equivalent or even superior physical properties compared to the polyurethane foam made from styrene-acrylonitrile copolymer POP in the prior art; thus, the present compound is fully capable of substituting traditional styrene-acrylonitrile copolymer POP for the production of environmentally friendly, high rebound, and block-shaped soft polyurethane foam materials.

Classes IPC  ?

• C08G 18/48 - Polyéthers
• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals
• C08G 18/63 - Polymères séquencés ou greffés obtenus par polymérisation de composés contenant des doubles liaisons carbone-carbone sur des polymères
• C08G 18/76 - Polyisocyanates ou polyisothiocyanates cycliques aromatiques
• C08G 65/26 - Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule à partir d'éthers cycliques par ouverture d'un hétérocycle à partir d'éthers cycliques et d'autres composés
• C08J 9/14 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement utilisant des gaz de gonflage produits par un agent de gonflage introduit au préalable par un agent physique de gonflage organique
• C08G 18/66 - Composés des groupes , ou
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08F 220/44 - Acrylonitrile
• C08L 71/02 - Oxydes des polyalkylènes
• C08L 51/08 - Compositions contenant des polymères greffés dans lesquels le composant greffé est obtenu par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carboneCompositions contenant des dérivés de tels polymères greffés sur des composés macromoléculaires obtenus autrement que par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C08G 101/00 - Fabrication de produits cellulaires

Abrégé

A composition capable of substituting the use of styrene-acrylonitrile copolymer POP, comprising polyether polyol A having a hydroxyl value of 100-1000 mgKOH/g and a functionality of 4-8, and a polymer polyol having a hydroxyl value of 12-100 mgKOH/g, a functionality of 2-4, and a solid content of 4-45%, the branches thereof not containing polystyrene units. The polyurethane foam produced using the present composition to substitute the use of traditional styrene-acrylonitrile copolymer POP avoids the problem of styrene volatilisation due to the absence of styrene, and the produced polyurethane foam also maintains equivalent or even superior physical properties compared to the polyurethane foam made from styrene-acrylonitrile copolymer POP in the prior art; thus, the present compound is fully capable of substituting traditional styrene-acrylonitrile copolymer POP for the production of environmentally friendly, high rebound, and block-shaped soft polyurethane foam materials.

Classes IPC  ?

• C08F 283/06 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polyéthers, des polyoxyméthylènes ou des polyacétals
• C08F 220/44 - Acrylonitrile
• C08G 65/28 - Éthers cycliques et composés hydroxylés
• C08G 18/63 - Polymères séquencés ou greffés obtenus par polymérisation de composés contenant des doubles liaisons carbone-carbone sur des polymères
• C08J 9/14 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement utilisant des gaz de gonflage produits par un agent de gonflage introduit au préalable par un agent physique de gonflage organique