Patent ID: 7531592
Filing Date: 2009-05-12
Classification: C08K,H01B

Abstract:
1. A composition for enhancing the arc-tracking and arc-erosion resistance properties of an article, comprising: a) a suspension containing (i) a polydimethylsiloxane oil terminated at each end of the chains by a (CH b) a polydimethylsiloxane oil terminated at each end of the chains by a (CH c) a poly(dimethyl)(hydromethyl)siloxane oil terminated at each end of the chains by a (CH d) a platinum complex; e) a cyclic methylvinylpolysiloxane tetramer; and f) FeO and Fe wherein the composition contains an effective amount of d) and f) to enhance the arc-tracking and arc-erosion resistance properties of the article, the composition having an extinction time of no more than 8 s, as determined by UL 94V, wherein in said composition the ratio of the amount by weight of FeO to that of Fe