Thermoplastic vulcanizates with low compression set

Details Thermoplastic vulcanizates with low compression set Thermoplastic vulcanizates with low compression set

2007-01-12

2010-12-14

Eashoo, Mark (Department: 1796)

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

Synthetic resins

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

C525S050000, C525S055000, C525S191000, C525S241000, C525S326100, C525S331900, C525S332500, C524S001000, C524S474000

Reexamination Certificate

active

07851556

ABSTRACT:
A thermoplastic vulcanizate comprising a dynamically-cured rubber, where the rubber is selected from the group consisting of ethylene-propylene-non-conjugated diene rubber, propylene-based rubbery copolymers with units derived from non-conjugated diene monomers, and butyl rubber, where dynamic vulcanization is effected with a phenolic resin or a silicon-containing curative, and where the rubber is dynamically cured to an extent where greater than 94% by weight of the rubber is insoluble in cyclohexane at 23° C., and from about 25 to about 250 parts by weight of a thermoplastic polymer phase per 100 parts by weight rubber, where from about 75% to about 100% by weight of said thermoplastic polymer phase includes a butene-1-based polymer.

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Translation of JP 08012719 A.

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