Polyester foam materials

Details Polyester foam materials Polyester foam materials

1977-10-19

1978-08-29

Welsh, M. J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521918, 521182, 521189, 521905, C08J 900

Patent

active

041102762

ABSTRACT:
Resilient polyester foam materials. Acyl halide, polyol, and polyhydroxy cross-linking agent are reacted in the presence of alkali metal carbonate to prepare the resilient polyester foams. A process similar to that used in the one-shot preparation of polyurethane foams is used. Preferred reactants are adipyl chloride, quadrafunctional polyol based on pentaerythritol, propoxylated pentaerythritol cross-linking agent, and sodium carbonate. The resilient polyester foams find use in products such as catamenial tampons.

REFERENCES:
patent: 3815601 (1974-11-01), Schaefer

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