Treatment of reinforcing silica

Details Treatment of reinforcing silica Treatment of reinforcing silica

Filed on

1977-09-06

Date issued

1978-09-26

Examiner

Jacobs, Lewis T.

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

Other Related Categories

106288Q, 106308N, C08L 8304

Type

Patent

Status

active

Patent number

041169190

Description

ABSTRACT:
An improved treatment for reinforcing silica uses both a silazane represented by the formula (RR'R"Si).sub.2 NH and bis-Si-(1-methyl-1-silacyclopentenyl) amine as filler treatment. The filler treatment may be done either in situ during the manufacture of curable silicone elastomer compositions or as a separate operation. The treatment allows production of an easily extrudable composition with improved durometer and tear strength.

REFERENCES:
patent: 3243404 (1966-03-01), Martellock
patent: 3635743 (1972-01-01), Smith
patent: 4064096 (1977-12-01), Gibard

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