Heat stable polyurethane foams

Details Heat stable polyurethane foams Heat stable polyurethane foams

1990-04-09

1992-03-03

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521137, 36114, 36115, C08G 1814

Patent

active

050933795

ABSTRACT:
Low density polyurethane foams having improved resistance to degradation of properties of compression set and flexibility when exposed to elevated temperatures and pressures are made by reacting a polyisocyanate of about 2.3 to 2.7 functionality at an isocyanate index of about 1.0 with a blend of polyols, catalysts, blowing agents and the like in which the polyols are a mixture of a polyether polyol having a molecular weight of at least 5,000 and a polymer polyol, and the catalysts are a mixture of a major portion of an amine catalyst and a minor portion of a metal catalyst. The foams made by this invention are particularly well suited for use as components of sport shoes that are asembled by vulcanization.

REFERENCES:
patent: 4098773 (1978-07-01), Illers et al.
patent: 4208314 (1980-06-01), Priest et al.
patent: 4255526 (1981-03-01), Yukuta et al.
patent: 4536557 (1985-08-01), Heyman
patent: 4605681 (1986-08-01), Grey et al.
patent: 4689357 (1987-08-01), Hongu et al.
patent: 4698410 (1987-10-01), Straehle et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-272622