Polyurethane elastomers prepared from high molecular weight...

Details Polyurethane elastomers prepared from high molecular weight... Polyurethane elastomers prepared from high molecular weight...

C - Chemistry, Metallurgy

08

G

400/111, 402/132

C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08G 18/72 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1307065

ABSTRACT This invention is an improvement in a process for preparing polyurethane and/or polyurea polymers wherein an isocyanate terminated quasi-prepolymer is reacted with an active hydrogen-containing composition to form a polyurethane and/or polyurea polymer. The improvement comprises employing as the quasi-prepolymer a solution of an isocyanate terminated prepolymer in a monomeric polyisocyanate, wherein said isocyanate- -terminated prepolymer is the reaction product of a polyisocyanate and a relatively high equivalent weight isocyanate-reactive material, and said isocyanate- terminated prepolymer has an average molecular weight of at least twice that of said relatively high equivalent weight isocyanate-reactive material. 34,868-F In another aspect, this invention relates to a quasi-prepolymer which comprises a solution of an isocyanate- terminated prepolymer in a monomeric polyisocyanate, wherein said isocyanate-terminated prepolymer is the reaction product of a polyisocyanate and a relatively high equivalent weight isocyanate- reactive material, and said isocyanate-terminated prepolymer has an average molecular weight of at least twice that of said relatively high equivalent weight isocyanate-reactive material. 34,868-F

526169

Affiliated with

Also associated with

Rating

Polyurethane elastomers prepared from high molecular weight... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyurethane elastomers prepared from high molecular weight..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyurethane elastomers prepared from high molecular weight... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1226436