Process for rigid polyurethane foams

Details Process for rigid polyurethane foams Process for rigid polyurethane foams

1998-09-23

2000-09-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

510415, 521174, 521115, 25218226, C08J 914

Patent

active

061213381

ABSTRACT:
Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foam using as blowing agent a mixture containing from 1 to 50 mole % 1,1,1,3,3-pentafluoropropane and from 50 to 99 mole % isopentane and/or n-pentane.

REFERENCES:
patent: 5558810 (1996-09-01), Minor et al.
patent: 5562857 (1996-10-01), Werner et al.
patent: 5563180 (1996-10-01), Skowronski et al.
patent: 5565497 (1996-10-01), Godbey et al.
patent: 5672294 (1997-09-01), Lund et al.
patent: 5677358 (1997-10-01), Lund et al.
patent: 5788886 (1998-08-01), Minor et al.

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