Co-agents for the preparation of thermoplastic elastomeric...

Details Co-agents for the preparation of thermoplastic elastomeric... Co-agents for the preparation of thermoplastic elastomeric...

2005-05-10

2005-05-10

Nutter, Nathan M. (Department: 1711)

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

Synthetic resins

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

C525S193000, C525S194000, C525S216000, C525S222000, C525S232000, C525S240000, C525S241000

Reexamination Certificate

active

06890990

ABSTRACT:
A thermoplastic elastomer with increased oil resistance and decreased compression set compared to conventionally cured thermoplastic elastomers may be made from a dynamically vulcanized blend of propylene resin and ethylene/alpha-olefin
on-conjugated diene elastomers via a curing system containing a free radical initiator, a first co-agent including diene-containing polymers with a 1,2-vinyl content greater than 50% by weight, and a second co-agent including multifunctional acrylates containing at least two acrylate groups, multifunctional maleimides containing at least two imide groups, or mixtures of both, where the elastomer gel content in the modified blend is at least 97%.

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