Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1989-02-06
1991-04-16
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
106490, 428405, 564588, 564860, C08K 906
Patent
active
050083058
ABSTRACT:
An improved reinforcing silica filler can be produced by treating a reinforcing silica, having a surface area of greater than 50 m.sup.2 /g and from 0.5 to 6 parts by weight of adsorbed moisture per 100 parts by eight of silica, with a volatile treating agent comprising a combination of from 0.2 to 10 parts by weight of volatile treating agent of the formula Vi.sub.x Si(OR').sub.4-x and from 0.2 to 15 parts by weight of volatile treating agent of the formula Ph.sub.x Si(OR').sub.4-x, where Vi is vinyl radical and Ph is phenyl radical. The improved reinforcing silica filler can be combined with polydiorganosiloxane and curing means to produce silicone elastomer compositions which can be cured to elastomers which have improved physical properties, such as compression set and heat aging.
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Kennan Linda D.
Knapp Theodore L.
Monroe Carl M.
Skostins Olgerts
Bleutge John C.
Dean Jr. R.
Dow Corning Corporation
Elliott Edward C.
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