Produits et services

Artificial resins, semi-processed; Plastic substances, semi-processed

Abrégé

Method for producing flexographic printing plates from a photopolymerizable flexographic printing plate with a dimensionally stable support, photopolymerizable, relief-forming layer(s), and a digitally imagable layer. The method comprises (a) producing a mask by imaging the digitally imagable layer, (b) exposing the flexographic printing plate with a plurality of UV-LEDs on a UV-LED strip through the mask with actinic light, and photopolymerizing the image regions of the layer, and (c) developing the photopolymerized layer. In the UV-LED strip or in a separate strip, at least one ultrasonic sensor is arranged for determining the thickness of the flexographic printing plate for exposure. Depending on the measured thickness of the flexographic printing plate, the exposing of the flexographic printing plate is controlled in respect of: (i) number of exposure steps, exposure intensity, energy input per exposure step, duration of the individual exposure steps, and/or overall duration of exposure.

Classes IPC  ?

• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C07C 269/04 - Préparation de dérivés d'acide carbamique, c.-à-d. de composés contenant l'un des groupes l'atome d'azote ne faisant pas partie de groupes nitro ou nitroso à partir d'amines avec formation de groupes carbamate
• C08G 18/12 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle utilisant plusieurs composés contenant un hydrogène actif dans le premier stade de la polymérisation
• C07F 7/00 - Composés contenant des éléments des groupes 4 ou 14 du tableau périodique
• C07F 7/18 - Composés comportant une ou plusieurs liaisons C—Si ainsi qu'une ou plusieurs liaisons C—O—Si
• C08G 18/77 - Polyisocyanates ou polyisothiocyanates contenant des hétéro-atomes autres que l'azote, l'oxygène ou le soufre de l'isocyanate ou de l'isothiocyanate
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain
• C08G 71/04 - Polyuréthanes

Abrégé

The present invention relates to using a two-step (thermolysis) or one-pot process to prepare aliphatic diisocyanates from aliphatic diamines and diaryl carbonates. Polyisocyanates can also be prepared from polyamines and diaryl carbonates. The present synthetic processes do not apply phosgene or highly toxic reagents and chloro-solvents during the entire procedure.

Classes IPC  ?

• C07C 261/00 - Dérivés d'acide cyanique
• C07C 269/00 - Préparation de dérivés d'acide carbamique, c.-à-d. de composés contenant l'un des groupes l'atome d'azote ne faisant pas partie de groupes nitro ou nitroso
• C07C 271/00 - Dérivés d'acide carbamique, c.-à-d. composés contenant l'un des groupes l'atome d'azote ne faisant pas partie de groupes nitro ou nitroso
• C07C 263/04 - Préparation de dérivés d'acide isocyanique à partir de, ou en passant par des carbamates ou des halogénures de carbamoyle
• C07C 269/04 - Préparation de dérivés d'acide carbamique, c.-à-d. de composés contenant l'un des groupes l'atome d'azote ne faisant pas partie de groupes nitro ou nitroso à partir d'amines avec formation de groupes carbamate

Produits et services

Full line of synthetic resins for industrial use; artificial and synthetic resins; polymer resins used in the manufacture of resin or fiber composites; synthetic resins for use in the manufacture of molding compounds; unprocessed artificial resins; unprocessed synthetic resins; adhesives and glues for industrial purposes; adhesive materials for the building industry and tiles; adhesives for use in the manufacture of shoes; adhesives, other than for stationery or household purposes, for general industrial use; industrial adhesives for use in coating and sealing; plastic adhesives, not for stationery or household purposes; polyurethane adhesives; thermoplastic and thermosetting adhesives and cements; thermoplastic compounds, thermoplastic elastomer resins and thermoplastic concentrates in liquid form for use in manufacturing in a wide variety of industries; [ catalysts for use in the manufacture of rubber; chemicals for rubber and plastics processing application; chemicals for welding; chemicals used in the manufacture of fabric or textiles; photographic chemicals; chemicals, namely, photoresists; waterproofing chemical compositions for articles of fabric; waterproofing chemical compositions for articles of leather; ] plastic molding compounds for use in the manufacture of molded plastic articles; polymers and polymeric additives for use in the manufacture of [ pharmaceutical preparations, ] plastics, cosmetics, personal care products, coatings, adhesives [, and lubricants ]; unprocessed plastics for industrial use; unprocessed plastics in all forms

Produits et services

Full line of synthetic resins for industrial use; artificial and synthetic resins; polymer resins used in the manufacture of resin or fiber composites; synthetic resins for use in the manufacture of molding compounds; unprocessed artificial resins; unprocessed synthetic resins; adhesives and glues for industrial purposes; adhesive materials for the building industry and tiles; adhesives for use in the manufacture of shoes; adhesives, other than for stationery or household purposes, namely, adhesives for general industrial use; industrial adhesives for use in coating and sealing; plastic adhesives, not for stationery or household purposes; polyurethane adhesives; thermoplastic and thermosetting adhesives and cements; thermoplastic compounds, thermoplastic elastomer resins and thermoplastic concentrates in liquid form for use in manufacturing in a wide variety of industries; [ catalysts for use in the manufacture of rubber; chemicals for rubber and plastics processing application; chemicals for welding; chemicals used in the manufacture of fabric or textiles; photographic chemicals; chemicals, namely, photoresists; waterproofing chemical compositions for articles of fabric; waterproofing chemical compositions for articles of leather; ] plastic molding compounds for use in the manufacture of molded plastic articles; polymers and polymeric additives for use in the manufacture of [ pharmaceutical preparations, ] plastics, cosmetics, personal care products, coatings, adhesives [, and lubricants ] ; unprocessed plastics for industrial use; unprocessed plastics in all forms

Produits et services

(1) Chemical products, namely synthetic resin, AS resin (acrynlonitrile styrene copolymer), ABS resins (Acrylonitrile - Butadiene Styrene copolymer), plastics, and adhesives.

Produits et services

FULL LINE OF SYNTHETIC RESINS FOR INDUSTRIAL USE