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    • 71. 发明授权
    • Heat stabilized silicone elastomers
    • 热稳定硅酮弹性体
    • US4777087A
    • 1988-10-11
    • US18372
    • 1987-02-24
    • George J. HeeksArnold W. HenryEdward L. Schlueter, Jr.
    • George J. HeeksArnold W. HenryEdward L. Schlueter, Jr.
    • C08K3/24C08K3/00C08K3/30C08K3/32C08K5/00C08K5/36C08K5/59C08L83/00C08L83/04C08L83/05C08L83/07G03G15/20B32B3/26
    • G03G15/2057C08K5/0091Y10T428/249995Y10T428/31663
    • A silicone composition curable to a heat stabilized silicone elastomer comprising at least one polyorganosiloxane having the formula: ##STR1## where R is hydrogen or substituted or unsubstituted alkyl, alkenyl or aryl having less than 19 carbon atoms, each of A and D may be any of methyl, hydroxy or vinyl groups,0 350,a complex comprising a transition metal salt of at least one polydentate chelating ligand having the formula: ##STR2## where each R.sub.1 may be an alkyl biradical having 1 to 6 carbon atoms or an aryl biradical having less than 19 carbon, atoms R'.sub.1, is an X' substituted R.sub.1, each of Z and E may be any of carboxy thiocarboxy, dithiocarboxy, or --N(R.sub.2).sub.2, --A.sub.s (R.sub.2).sub.2, --S(R.sub.2) where each R.sub.2 may be any of hydrogen or an alkyl radical having 1 to 6 carbon atoms or any aryl radical having less than 19 carbon atoms, X' may be any of hydrogen, carboxy, thiocarboxy, dithiocarboxy, --N(R.sub.2).sub.2, --A.sub.s (R.sub.2).sub.2, or --S(R.sub.2), X is --N(R.sub.2)--, --A.sub.s (R.sub.2)--, or --S-- and p is 0 to 4 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 to 50 to 100,000 centistokes. In a preferred embodiment for use in an electrostatographic reproducing machine a fuser member is made with an addition curable polyorganosiloxane and the complex is bis (ethylene diamine) copper (II) sulfate initially predispersed in a low viscosity silicone oil and subsequently dispersed in a higher viscosity silicone oil.
    • 包含至少一种具有下式的聚有机硅氧烷的硅氧烷组合物:其中R是氢或具有少于19个碳原子的取代或未取代的烷基,烯基或芳基,A和D中的每一个可以是任何 的甲基,羟基或乙烯基,0 <(m / n)≤1和m + n> 350,包含至少一种具有下式的多齿螯合配位体的过渡金属盐的络合物:其中每个R 1 可以是具有1至6个碳原子的烷基双原子或具有少于19个碳原子的芳基双原子,R 1'是X'取代的R 1,Z和E各自可以是羧基硫代羧基,​​二硫代羧基或-N (R2)2,-As(R2)2,-S(R2)其中R2可以是氢或具有1-6个碳原子的烷基或任何具有少于19个碳原子的芳基,X'可以是 氢,羧基,硫代羧基,​​二硫代羧基,​​-N(R2)2,-As(R2)2或-S(R2)中的任一个,X是-N(R2) - ,--As(R2) - 或-S - 和p是0到4存在于公司 其量足以抑制聚有机硅氧烷和细碎填料的氧化降解和有效量的交联剂和催化剂。 络合物可以预先分散在粘度在50至100,000厘沲范围内的聚有机硅氧烷油中。 在用于静电复制机的优选实施方案中,定影构件由可加成固化的聚有机硅氧烷制成,并且络合物是最初预先分散在低粘度硅油中的双(乙二胺)硫酸铜(II),随后以更高的粘度分散 硅油。