Treated silica fillers and process for making same

Details Treated silica fillers and process for making same Treated silica fillers and process for making same

1982-08-20

1985-07-16

McCarthy, Helen M.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

106288B, 106308Q, 523209, 523213, 556467, C09C 312, C08K 906, C08L 8306

Patent

active

045297746

ABSTRACT:
A treatment for finely divided silica reinforcing fillers is provided which comprises heating the silica filler in the presence of a fluoroalkyl-functional diorganopolysiloxane treating agent. The treated fillers are especially compatible with fluorosilicone gums, and fluorosilicone rubbers made using said fillers exhibit improved mechanical properties, especially tear strength and compression set.

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