Foamable polymeric compositions and articles containing...

Details Foamable polymeric compositions and articles containing... Foamable polymeric compositions and articles containing...

2011-08-30

2011-08-30

Jagannathan, Vasu (Department: 1764)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C521S134000, C521S139000, C521S140000, C525S098000, C525S240000

Reexamination Certificate

active

08008398

ABSTRACT:
Foamable compositions which are usable for the manufacture of foamed, flexible, heat resistant, thermoplastic elastomeric articles, and which comprises at least:(a) 100 pbw of one or more selectively hydrogenated block copolymers,(b) 5 to 50 pbw per 100 pbw of component (a) of one or more different selectively hydrogenated block copolymers,(c) 42 to 80 pbw per 100 pbw of component (a) of a linear crystalline polymer comprising propylene as the major component,(d) from 100 to 250 pbw per 100 pbw of component (a) of a softener compatible with blocks B and B′, and(e) from 0.01 to 3 wt. %, relative to the weight of the primary components (a) to (e) of a solid chemical nucleating agent of the endothermic group in combination with a blowing agent.

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