Composition useful as an adhesive for installing vehicle...

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/10 (2006.01) C08G 18/76 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2531386

The invention is an composition comprising: a) one or more isocyanate functional polyether based prepolymers; b) one or more isocyanate functional polyester prepolymers wherein the one or more polyesters used to prepare the prepolymers having melting points of from 45 to 59~C; c) one or more polyisocyanates having a nominal functionality of 3 or greater; d) one or more nonconductive carbon blacks; e) one or more catalysts for the reaction of isocyanates moieties with hydroxyl groups. In a preferred embodiment the composition of the invention further comprises one or more isocyanate functional polyester prepolymers wherein the one or more polyesters used to prepare the prepolymers having melting points of 60 to 90~C.

La présente convention est une composition comprenant : (a) un ou plusieurs prépolymères à base de polyéther fonctionnel isocyanate, (b) un ou plusieurs prépolymères polyester fonctionnel isocyanate, le ou les polyesters utilisés pour préparer les prépolymères possédant des points de fusion comprise entre 45 degrés Celsius et 59 ·C, (c) un ou plusieurs polyisocyanates possédant une fonctionnalité nominale supérieure ou égale à 3, (d) un ou plusieurs noirs de charbon non conducteurs, (e) un ou plusieurs catalyseurs destinés à la réaction des fractions isocyanates avec des groupes hydroxyle. Dans un mode préféré de l'invention, la composition comprend aussi un ou plusieurs prépolymères polyester fonctionnel isocyanate, le ou les polyester utilisés pour préparer les prépolymères possédant un point de fusion compris entre 60 degrés Celsius et 90 ·C.

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