Preparation of high fatigue endurance liquid silicone rubber com

Details Preparation of high fatigue endurance liquid silicone rubber com Preparation of high fatigue endurance liquid silicone rubber com

1997-11-06

1999-06-01

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264211, 26421121, 26421123, 264349, 366 75, 366 761, 366 83, 366 91, 524730, 524789, 524847, 528 15, 528 18, 528 21, 528 23, B29C 4740, B29C 4776, C08K 524

Patent

active

059085924

ABSTRACT:
A liquid silicone rubber base including (A) an alkenyl-containing organopolysiloxane, (B) a reinforcing silica filler, (C) a mixing assistant in the form of a silanol-containing compound, (E) an organohydrogen polysiloxane, (f) a platinum catalyst and optionally, (D) a wetting auxiliary catalyst is prepared by previously mixing 10-120 parts of component (A) with 1-35 parts of component (C) and 0-35 parts of component (D) to form a premix liquid, mixing the premix liquid with 100 parts of component (B) to form a premix power, and kneading the premix powder with the remainder of component (A). By adding a curing agent of organohydrogenpolysiloxane/platinum catalyst to the liquid silicone rubber base, there is obtained a liquid silicone rubber composition having improved fatigue endurance.

REFERENCES:
patent: 5118754 (1992-06-01), Miyakoshi et al.
patent: 5198171 (1993-03-01), Kasahara et al.
patent: 5610230 (1997-03-01), Yoshida et al.
Patent Abstracts of Japan, vol. 095, No. 011, Dec. 26, 1995.
Abstract of Japan 61-130,344 (Published Jun. 18, 1986).
Abstract of Japan 3-47,664 (Published Jul. 22, 1991).

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