Flexible polyester foams

Details Flexible polyester foams Flexible polyester foams

1998-12-09

2000-04-25

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521182, 521 79, 521 81, 264 461, C08J 900

Patent

active

060545003

ABSTRACT:
A foamed cellular material which can be obtained from foamed aromatic polyester resins with a bulk density of 50 to 700 kg/m3 by heating in vacuum to temperatures which are higher than the Tg of the material and lower than its melting point. The foamed material, generally in the form of a sheet or panel, has high-level characteristics in terms of flexibility and dimensional thermostability depending on the degree of crystallinity after the vacuum treatment.

REFERENCES:
Patent Abstracts of Japan, vol. 015, No. 345, dated Sep. 3, 1991 re JP 03-134037 to Sekisui Plastics Co., Ltd., published Jun. 7, 1991.
Derwent database WPI search week 9804 re JP 09-291166 A to Kirin Brewery KK and Sekisui Plastics Co., Ltd., published Nov. 11, 1997.
European Search Report re EP 98123226.7, issued Jun. 17, 1999.

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