Flame retarded polyisocyanurate foam made from polyol derived fr

Details Flame retarded polyisocyanurate foam made from polyol derived fr Flame retarded polyisocyanurate foam made from polyol derived fr

1983-09-12

1984-08-28

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C08G 1814

Patent

active

044684827

ABSTRACT:
A flame retardant polyurethane-modified polyisocyanurate foam composition containing a flame retardant amount of a normally liquid flame retardant polyol ester. The polyol ester is prepared by a process comprising reacting a halogen containing anhydride of a dicarboxylic acid or a mixture of said anhydrides with an aliphatic polyol having at least three hydroxy groups and an aliphatic diol, to obtain a substantially fully esterified halogen containing product.

REFERENCES:
patent: 3454530 (1969-07-01), Case et al.
patent: 3565812 (1971-02-01), Anderson et al.
patent: 3585185 (1971-06-01), Levis et al.
patent: 3639541 (1972-02-01), Austin et al.
patent: 3639542 (1972-02-01), Pizzini et al.
patent: 3642646 (1972-02-01), Marcus
patent: 3676376 (1972-07-01), Svoboda et al.
patent: 3989653 (1976-11-01), Baldino et al.
patent: 4264745 (1981-04-01), Foucht

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