Process for the preparation of a thermoplastic elastomer...

Details Process for the preparation of a thermoplastic elastomer... Process for the preparation of a thermoplastic elastomer...

2003-01-28

2009-08-11

Nutter, Nathan M (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...

C525S207000, C525S238000, C525S240000, C525S241000

Reexamination Certificate

active

07572858

ABSTRACT:
Process for the preparation of a thermoplastic elastomer by melt mixing a partially vulcanized rubber concentrate, a thermoplastic polymer and/or additives, optionally oil and a curing agent. The partially vulcanized rubber concentrate is prepared by melt mixing at least one elastomer and optionally oil with a thermoplastic polymer and a curing agent. The elastomer may be EPDM or EPM. The thermoplastic polymer may be chosen from a thermoplastic polyolefin. Useful curing agents are for example sulfur, sulfurous compounds, metal oxides, maleimides, phenol resins, siloxanes or peroxides.

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