Foaming resin composition

Details Foaming resin composition Foaming resin composition

1986-11-07

1987-07-14

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 96, 521150, C08J 910

Patent

active

046803181

ABSTRACT:
A foaming resin composition comprising an unsaturated random copolymer consisting of propylene, ethylene, and a branched 1,4-diene represented by the following formula: ##STR1## wherein R.sup.1 represents an alkyl group having not more than 8 carbon atoms; and R.sup.2 and R.sup.3 each represents a hydrogen atom or an alkyl group having not more than 8 carbon atoms, provided that R.sup.2 and R.sup.3 do not simultaneously represent a hydrogen atom, and a chemical foaming agent. The composition is prevented from increasing in temperature due to shearing during molding into a foamable sheet and, therefore, provides a uniform foamed product.

REFERENCES:
patent: 3891724 (1975-06-01), Yaeda et al.
patent: 3933769 (1976-01-01), Lal et al.
patent: 3991262 (1976-11-01), Lal et al.
patent: 4604408 (1986-08-01), Newberg
patent: 4607060 (1986-08-01), Kimiec et al.

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