| 摘要 |
<p>A silicone composition curable to a heat stabilized silicone elastomer, comprising at least one polyorganosiloxane having the formula: <CHEM> where R is hydrogen or substituted or unsubstituted alkyl, alkenyl or aryl having less than 19 carbon atoms, each of A and B may be any of methyl, hydroxy or vinyl groups, 0 < @ @</= @ 1 and m + n > 350, a complex comprising a transition metal salt of at least one polydentate transition metal chelating ligand having the formula: <MATH> where each R1 may be any of alkyl having 1 to 6 carbon atoms, or an aryl moiety having less than 19 carbon atoms, R'1 is an X' substituted R1, as defined, each of Z, Y and X' may be any of carboxy or substituted or unsubstituted nitrogen, sulfur or arsenic, X is R1 substituted or unsubstituted nitrogen, sulfur or arsenic, p is 0 to 4 and unsubstituted nitrogen, sulfur and arsenic are defined as -NH2, -AsH2 and -SH respectively, and each hydrogen may be substituted by R1, present in the composition in an amount sufficient to inhibit oxidative degradation of the polyorganosiloxane and a finely divided filler and effective amounts of crosslinking agent and catalyst. The complex may be predispersed in a polyorganosiloxane oil having a viscosity within a range of 50 to 100,000 centistokes.</p> |
