Foamable copolyesters

Details Foamable copolyesters Foamable copolyesters

1994-08-22

1995-03-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, C08J 904

Patent

active

053995953

ABSTRACT:
Disclosed are foamable copolyester compositions containing 0.5 to 5.0 mole percent of a dicarboxylic acid sulfomonomer which contains at least one metal sulfonate group attached to an aromatic nucleus. These copolyesters possess high melt viscosity and are readily foamable with a wide range of foaming agents to provide low density shaped articles, films, and sheets.

REFERENCES:
patent: 5229432 (1993-07-01), Muschiatti
patent: 5234640 (1993-08-01), Amano et al.

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