Process to produce silica-filled elastomeric compounds

Details Process to produce silica-filled elastomeric compounds Process to produce silica-filled elastomeric compounds

2007-07-03

2007-07-03

Szekely, Peter (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S007000, C524S430000, C524S445000, C524S451000

Reexamination Certificate

active

10834437

ABSTRACT:
The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer with at least one mineral filler and at least one phosphine modifier and optionally curing the filled elastomer with sulfur or other curative systems. Filled halobutyl elastomers prepared according to the present invention possess improved levels of filler dispersion which results in a reduction in the hardness of the compound and an increased tensile strength.

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Database WPI, Section Ch, Week 198509, Derwent Publications, Ltd., London, GB; Class A12, AN 1985-052375 XP002338792 & JP 60 008315 A (Toshiba KK), (Jan. 17, 1985) *abstract*.

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