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...
Patent
1996-07-03
1997-09-16
Glass, Margaret W.
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...
524588, 524786, 524860, 524861, 525477, 525478, C08K 906
Patent
active
056682050
ABSTRACT:
A silicone rubber composition of the addition curing type containing an organopolysiloxane having at least two aliphatic unsaturated hydrocarbon groups in a molecule, silica, an organohydrogenpolysiloxane, a platinum catalyst, and a liquid organopolysiloxane blocked with a (CH.sub.3).sub.3 SiO.sub.1/2 unit at either end, having a monovalent hydrocarbon group (exclusive of an aliphatic unsaturated hydrocarbon group) attached to a silicon atom, provides a composition heat curable to a silicone rubber having improved weathering and tracking resistance and thus useful for high-voltage electrical insulators. Also, a silicone rubber composition containing an organopolysiloxane, an inorganic filler and an organic peroxide is improved by using as the organopolysiloxane one or more organopolysiloxanes of the formula: R.sup.6.sub.f SiO.sub.(4-f)/2, and blending therein aluminum hydroxide. There is obtained a composition which is ready for injection molding and cures into a silicone rubber having improved weathering and tracking resistance and thus suitable for high-voltage electrical insulators.
REFERENCES:
patent: 3965065 (1976-06-01), Elliott
patent: 4011168 (1977-03-01), Uhlmann
patent: 4418171 (1983-11-01), Hall
patent: 4749824 (1988-06-01), Orbeck
patent: 4755554 (1988-07-01), Itoh et al.
patent: 5369161 (1994-11-01), Kunieda et al.
patent: 5378742 (1995-01-01), Matsushita et al.
patent: 5519080 (1996-05-01), Matsushita et al.
Hawley's Condensed Chemical Dictionary, Twelfth Ed. p. 42 1993.
Shuuichi Azechi
Yoshida Takeo
Glass Margaret W.
Shin-Etsu Chemical Co. , Ltd.
LandOfFree
Silicone rubber compositions for high-voltage electrical insulat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Silicone rubber compositions for high-voltage electrical insulat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicone rubber compositions for high-voltage electrical insulat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-219049