Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1983-09-06
1985-08-20
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525100, C08L 8306, C08L 8310
Patent
active
045365539
ABSTRACT:
A silicone elastomer having improved flex life and a method of improving the flex life of silicone elastomers having olefinic unsaturation is described. The flex life of silicone elastomers having olefinic unsaturation is improved substantially by mixing vinyl acetate ethylene copolymer with the silicone elastomer in the presence of a free radical catalyst at an elevated temperature. In a preferred embodiment, methyl vinyl silicone rubber is mixed with vinyl acetate copolymer in the presence of dicumyl peroxide at an elevated temperature to provide a silicone elastomer having improved flex life.
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Annual Book of ASTM Standards, Part 37, pp. 175-177, [ASTM D 813 59] "Standard Test Method for Rubber Deterioration-Crack Growth".
Filbert Walter H.
Rufer Rosalyn J.
Briggs Sr. Wilbert J.
General Electric Company
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