Polyurethane and polyisocyanurate rigid foams prepared using ter

Details Polyurethane and polyisocyanurate rigid foams prepared using ter Polyurethane and polyisocyanurate rigid foams prepared using ter

1992-12-09

1994-03-22

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521155, 521910, C08J 908, C08J 914

Patent

active

052965163

ABSTRACT:
Use of a ternary blowing agent mixture containing water, HCFC-22, and either or both of methylene chloride or 1,1,1-trichloroethane allows the preparation of rigid urethane and polyisocyanurate foams displaying good dimensional stability and low aged k-factors.

REFERENCES:
patent: 4205136 (1980-05-01), Ohashi et al.
patent: 4661533 (1987-04-01), Stobby
patent: 5124366 (1992-06-01), Gluck
patent: 5147898 (1992-09-01), Saito

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