Methods and compositions for preparing rigid foams with non-chlo

Details Methods and compositions for preparing rigid foams with non-chlo Methods and compositions for preparing rigid foams with non-chlo

1995-06-07

1996-03-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521125, 521130, 521131, 521174, C08G 1816, C08G 1822, C08J 914

Patent

active

054968690

ABSTRACT:
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising
(a) from about 40-95% by weight of a polyester or polyether polyol;
(b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and
(c) a non-chlorofluorocarbon blowing agent.

REFERENCES:
patent: 3959191 (1976-05-01), Kehr et al.
patent: 4767796 (1988-08-01), Corteler et al.
patent: 4876019 (1989-10-01), Meyer et al.
patent: 5008033 (1991-04-01), Meyer et al.
patent: 5051466 (1991-09-01), Meyer et al.
patent: 5164143 (1992-11-01), Meyer et al.
patent: 5182034 (1993-01-01), Meyer et al.

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