Method for the preparation of polyurethane elastomers

C - Chemistry – Metallurgy – 08 – G

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08G 18/10 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2282537

A method for the production of polyurethane elastomers by reacting an isocyanate prepolymer having an isocyanate content of from 5 to 10 % by weight which is the reaction product of an excessive amount of a polyisocyanate containing at least 85 % by weight of 4,4'-diphenylmethane diisocyanate or a variant thereof and a polyether polyol having an average nominal hydroxyl functionality of from 2 to 4, an average hydroxyl equivalent weight of from 500 to 3000, and an oxyethylene content of from 50 to 85 % by weight, with an aqueous latex to form a foam, and compressing said foam.

L'invention concerne un procédé pour la production d'élastomères de polyuréthanne. Ce procédé consiste à faire réagir un polymère d'isocyanate présentant une teneur en isocyanate comprise entre 5 et 10 % en poids qui est le produit de réaction d'une quantité excessive d'un polyisocyanate contenant au moins 85 % en poids d'un 4,4'-diphénylméthane diisocyanate ou une variante de ce dernier, et un polyol de polyéther présentant une fonctionnalité hydroxyle nominale moyenne comprise entre 2 et 4, un poids équivalent d'hydroxyl moyen situé entre 500 et 3000, et une teneur en oxyéthylène comprise entre 50 et 85 % en poids, avec un latex aqueux pour former une mousse, et à comprimer la mousse ainsi obtenue.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for the preparation of polyurethane elastomers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the preparation of polyurethane elastomers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the preparation of polyurethane elastomers will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1449108

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.