Heat cured silicone rubber compositions containing a potassium a

Details Heat cured silicone rubber compositions containing a potassium a Heat cured silicone rubber compositions containing a potassium a

1992-04-09

1995-01-10

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524588, 524449, 524492, C08K 906, C08K 334, C08L 8300

Patent

active

053807707

ABSTRACT:
Heat cured silicone rubber compositions which contain a potassium aluminosilicate filler exhibit improved resistance to hydrocarbon oils. The potassium aluminosilicate filler has an average surface area of between about 5.0 and about 6.50 m.sup.2 /g, an average particle diameter of between about 1.0 and about 20.0 micrometers, and an average particle thickness of between about 0.5 and 1.0 micrometers. The filler improves retention of physical properties and resistance to swelling in hot hydrocarbon oils in a wide variety of siloxane compositions.

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