Abrégé

The present invention belongs to the technical field of polymer hydrogenation modification, and particularly relates to a catalyst composition, a selective hydrogenation method for conjugated diene latex, a hydrogenated conjugated diene latex and the use thereof. The catalyst composition provided by the present invention comprises: a primary catalyst and a first cocatalyst, the primary catalyst being a ruthenium complex hydrogenation catalyst and/or an osmium complex hydrogenation catalyst, and the chemical structure of the first cocatalyst containing one or more of N, O, a carbon-carbon double bond and a carbon-carbon triple bond. The catalyst composition provided by the present invention allows for efficient selective hydrogenation of carbon-carbon double bonds of conjugated diene latex, can effectively reduce the amount of primary catalysts and cocatalysts used, involves mild hydrogenation conditions, achieves a lower residual amount of cocatalysts, achieves better properties of vulcanized rubber and high production efficiency, and eliminates gel problems.

Classes IPC  ?

• B01J 31/22 - Complexes organiques
• C08C 19/02 - Hydrogénation

Abrégé

The present disclosure provides a method for preparing aliphatic polyketone by continuous solution polymerization process and aliphatic polyketone; the method comprises the following steps: a) continuously feeding carbon monoxide, an olefin compound and a solvent system containing catalyst into a continuous flow reactor for solution polymerization to obtain an aliphatic polyketone; wherein the aliphatic polyketone has a particle size of 10 μm˜50 μm, a particle size distribution width Span of 0.5˜0.9, and a bulk density >0.35 g/ml. Compared with the prior art, in the method provided by the present disclosure, a solvent system containing a catalyst is adopted, and a continuous solution polymerization reaction is conducted to realize continuous feeding and continuous discharging, thereby effectively solving the problems such as difficulty in controlling the morphology of polymer particles, easy material hanging on the wall, low single-pot yield, and poor product repeatability in the traditional batch slurry process.

Classes IPC  ?

• C08G 67/02 - Copolymères de l'oxyde de carbone et de composés aliphatiques non saturés
• B01J 31/12 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques contenant des composés organométalliques ou des hydrures métalliques
• B01J 31/24 - Phosphines
• C08K 5/07 - AldéhydesCétones

Abrégé

The present invention provides a method for preparing an aliphatic polyketone by means of a continuous solution polymerization method, and an aliphatic polyketone. The method comprises the following steps: a) continuously feeding carbon monoxide, an olefin compound and a solvent system containing a catalyst into a continuous flow reactor to perform a solution polymerization reaction, so as to obtain an aliphatic polyketone, wherein the particle size of the aliphatic polyketone is 10-50 µm, the particle size distribution width Span is 0.5-0.9, and the stacking density is greater than 0.35 g/mL. Compared with the prior art, in the method provided in the present invention, a solvent system containing a catalyst is used, and continuous solution polymerization is carried out during a reaction to achieve continuous feeding and continuous discharging, so that the problems of polymer particle morphology regulation and control being difficult, materials being prone to hanging on the wall, the single kettle yield being low, the product repeatability being poor, etc., during a traditional batch slurry process are effectively solved, and an aliphatic polyketone having a weight-average molecular weight greater than 200 thousand, a molecular weight distribution less than 2.0, a stacking density greater than 0.35 g/mL, a particle size of 10-50 µm and a particle size distribution width Span of 0.5-0.9 can be obtained by means of polymerization.

Classes IPC  ?

• C08G 67/02 - Copolymères de l'oxyde de carbone et de composés aliphatiques non saturés

Abrégé

A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.

Classes IPC  ?

• C08F 236/06 - Butadiène
• C08F 236/08 - Isoprène
• C08F 2/01 - Procédés de polymérisation caractérisés par des éléments particuliers des appareils de polymérisation utilisés
• C08F 2/02 - Polymérisation en masse
• C08F 2/42 - Polymérisation utilisant des régulateurs, p. ex. des agents d'arrêt de chaîne utilisant un agent d'arrêt instantané de la polymérisation
• C08F 4/642 - Composant couvert par le groupe avec un composé d'organo-aluminium
• C08C 4/00 - Traitement du caoutchouc avant la vulcanisation non prévu dans les groupes
• B01D 3/00 - Distillation ou procédés d'échange apparentés dans lesquels des liquides sont en contact avec des milieux gazeux, p. ex. extraction
• B01D 3/14 - Distillation fractionnée
• B01J 8/00 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés

Abrégé

The present invention relates to a method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method comprises: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus comprises a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By means of the production apparatus and the production method, the present invention allows industrial production of TBIR by bulk polymerization.

Classes IPC  ?

• C08F 236/08 - Isoprène
• C08F 236/06 - Butadiène
• C08F 4/642 - Composant couvert par le groupe avec un composé d'organo-aluminium
• C08F 2/42 - Polymérisation utilisant des régulateurs, p. ex. des agents d'arrêt de chaîne utilisant un agent d'arrêt instantané de la polymérisation
• C08F 2/02 - Polymérisation en masse
• C08F 2/01 - Procédés de polymérisation caractérisés par des éléments particuliers des appareils de polymérisation utilisés
• C08C 4/00 - Traitement du caoutchouc avant la vulcanisation non prévu dans les groupes