Microcellular elastomeric polyurethane foams

Details Microcellular elastomeric polyurethane foams Microcellular elastomeric polyurethane foams

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2258677

A method for the preparation of microcellular elastomeric polyurethane foams from a reaction mixture comprising a polyisocyanate component containing at least 85 % by weight of 4,4'-diphenylmethane diisocyanate or a variant thereof, a polyol composition comprising at least one polyoxyalkylene polyol having an average nominal hydroxyl functionality of from 2 to 6, an average hydroxyl equivalent weight of at least 1300 and an average oxyethylene content of between 50 and 85 % by weight, water, a chain extender having an average hydroxyl equivalent weight of from 15 to 250 and optionally a crosslinking agent, the hardblock-content being more than 45 % by weight.

Procédé de préparation de mousses de polyuréthanne élastomère et microcellulaire à partir d'un mélange réactionnel comprenant un composant poly-isocyanate contenant au moins 85 % en poids de 4,4'-diphénylméthane di-isocyanante ou une variante de ce dernier, une composition polyol comprenant au moins un polyoxyalkylène polyol possédant une valence fonctionnelle nominale moyenne d'hydroxyle comprise entre 2 et 6, un poids équivalent moyen d'hydroxyle d'au moins 1300 et une teneur moyenne en oxyéthylène comprise entre 50 et 85 % en poids, de l'eau, un allongeur de chaîne possédant un poids équivalent moyen d'hydroxyle compris entre 15 et 250 et éventuellement d'un agent de réticulation, la part formée par les blocs durs étant supérieure à 45 % en poids.

Affiliated with

Also associated with

Rating

Microcellular elastomeric polyurethane foams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microcellular elastomeric polyurethane foams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microcellular elastomeric polyurethane foams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1402443