Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-05-10
1992-04-28
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521131, 521172, 521173, 4283084, 4284231, C08G 1814
Patent
active
051090317
ABSTRACT:
Rigid cellular polymers are made by reacting an organic polyisocyanate with a polyol component comprising a polyester polyol having a free glycol content of less than about 7 percent by weight of the polyester polyol in the presence of a blowing agent. The use of the polyester polyol enhances the thermal insulating properties of the foams.
REFERENCES:
patent: 4237238 (1980-12-01), DeGuiseppi et al.
patent: 4346229 (1982-08-01), Derr et al.
patent: 4411949 (1983-10-01), Snider et al.
patent: 4417001 (1983-11-01), Svoboda et al.
patent: 4439550 (1984-03-01), Brennan
patent: 4469824 (1984-09-01), Grigsby, Jr. et al.
patent: 4521611 (1985-06-01), Magnus
patent: 4526908 (1985-07-01), Magnus et al.
patent: 4540771 (1985-09-01), Ambrose et al.
patent: 4714217 (1987-12-01), Londrigan
patent: 4720571 (1988-01-01), Trowell
patent: 4758607 (1988-07-01), Hallmark et al.
Polyester Polyols in Rigid Polyurethane and Polyisocyanurate Foams for Structural Building Panels, Polyurethanes World Congress, 1987, W. W. Reichmann et al.
Jim Walter Research Corp.
Vanecek Charles W.
Welsh Maurice J.
LandOfFree
Rigid foam with improved "K" factor by reacting a polyisocyanate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rigid foam with improved "K" factor by reacting a polyisocyanate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rigid foam with improved "K" factor by reacting a polyisocyanate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1249830