Process for making cellular and microcellular polyurethane foams

Details Process for making cellular and microcellular polyurethane foams Process for making cellular and microcellular polyurethane foams

1990-07-23

1993-10-05

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521130, 521142, 521155, 521163, 521170, 521172, C08G 1800

Patent

active

052505820

ABSTRACT:
The present invention relates to a process for producing a cellular or microcellular polyurethane foam wherein the reactants provide a built-in blowing capability. The process is effected by reacting a polyisocyanate with a carboxy-modified polyol to form a polyurethane and carbon dioxide, said carbon dioxide acting as an in situ blowing agent to foam said polyurethane into a cellular or microcellular polyurethane foam. In another aspect, the present invention relates to a process for forming an integral skin cellular or microcellular polyurethane foam by reacting, in a closed mold, a polyisocyanate with a carboxy-modified polyol to form a polyurethane and carbon dioxide.

REFERENCES:
patent: 4352896 (1982-10-01), Kopp et al.
patent: 4417002 (1983-11-01), Liessem
patent: 4460738 (1984-07-01), Frentzel et al.
patent: 4521615 (1985-06-01), Frentzel
patent: 4590255 (1986-05-01), O'Connor et al.
patent: 4910231 (1990-03-01), Pham et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1004420