Expanded thermoplastic synthetic resin and composition therefor

Details Expanded thermoplastic synthetic resin and composition therefor Expanded thermoplastic synthetic resin and composition therefor

1980-07-28

1982-08-10

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, 521143, 521149, C08J 914

Patent

active

043439136

ABSTRACT:
A thermoplastic synthetic resin such as polyethylene or ethylene-vinyl acetate copolymer resin containing 0.1 to 10 wt. % of a specific additive selected from specific classes of compounds, namely saturated higher fatty acid amides, saturated higher aliphatic amines and complete esters of saturated higher fatty acids is found to be very suitable for production of expanded articles and can be easily formed into expanded articles with little shrinkage after expansion, free from creases on the surface or cracks on the cell walls, and having excellent characteristics such as good closed cellular characteristic, high compressive strength, low density, etc.

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patent: 2770609 (1956-11-01), Symonds, Jr.
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patent: 2938879 (1960-05-01), Mock
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patent: 3644230 (1972-02-01), Cronin
patent: 3763059 (1973-10-01), Needham et al.
patent: 3991263 (1976-12-01), Clark et al.
patent: 4080344 (1978-03-01), Ikeda et al.

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