Polyester resins for polyurethane foams

Details Polyester resins for polyurethane foams Polyester resins for polyurethane foams

1982-07-14

1983-09-13

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521173, C08G 1814

Patent

active

044042957

ABSTRACT:
The machine processing character as well as the stress-strain properties of polyester polyurethane foam are improved by the use of a cross-linking polyol, a viscosity increasing dicarboxylic acid or anhydride such as phthalic anhydride, and by the use of specific minor amounts of poly(oxyethylene) glycol, in the esterification formula of foam grade polyester resins. A nonhydrophillic flexible polyester based polyurethane foam is produced.

REFERENCES:
patent: 3079350 (1963-02-01), Bernstein
patent: 3298974 (1967-01-01), Bernstein et al.
patent: 3399154 (1968-08-01), Bernstein et al.
patent: 3769245 (1973-10-01), Stewart et al.

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