Polyurethane foams prepared by a quasi-prepolymer technique

Details Polyurethane foams prepared by a quasi-prepolymer technique Polyurethane foams prepared by a quasi-prepolymer technique

1974-12-30

1976-07-06

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AY, C08G 1814, C08G 1812

Patent

active

039680614

ABSTRACT:
This invention relates to a method of preparing polyurethane foam which comprises the steps of forming an isocyanate-terminated prepolymer by reacting a polyisocyanate with a copolymer having an --OH-functionality greater than 2.00 but less than 3.00 derived from an .epsilon.-caprolactone, an epoxide and a mixture polyhydric alcohol chain initiators; and reacting said prepolymer in the presence of a blowing agent and a catalyst with a reactant mixture which comprises a chain extending agent having at least two functional groups each containing an active hydrogen atom, dissolved in a liquid copolymer of a lactone and an epoxide. The polyurethane foams are useful in the manufacture of shoe soles.

REFERENCES:
patent: 2779783 (1957-01-01), Hayes
patent: 2977385 (1961-03-01), Fowler et al.
patent: 3018256 (1962-01-01), Borr et al.
patent: 3591561 (1971-07-01), Kazama et al.
patent: 3741918 (1973-06-01), Koleske et al.

Affiliated with

Also associated with

Rating

Polyurethane foams prepared by a quasi-prepolymer technique 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 foams prepared by a quasi-prepolymer technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyurethane foams prepared by a quasi-prepolymer technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1532263