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    • 36. 发明授权
    • Method of making bubble and foreign particle free electrically
conductive polyurethanes
    • 制造气泡和外来颗粒的导电聚氨酯的方法
    • US5454980A
    • 1995-10-03
    • US165792
    • 1993-12-13
    • Edward L. Schlueter, Jr.James F. Smith
    • Edward L. Schlueter, Jr.James F. Smith
    • G03G15/16B65H5/02B65H5/06C08L75/00C08L75/04H01B1/00H01B1/06H01B1/12C09D175/04
    • H01B1/122
    • A method of making an electrically conductive polyurethane elastomer that is substantially free of bubbles and foreign particles comprising:forming a prepolymer of a polylol and an isocyanate, forming a liquid mixture of an ionic conductive additive, an amount of cross linking agent and chain extenders sufficient to provide a crosslinked elastomer;filtering the liquid mixture of additive, crosslinking agents and chain extenders to remove foreign particles;preheating the liquid mixture to a temperature above the decomposition temperature of the additive, crosslinking agents and chain extenders in a degassing oven to degass to less than 5 mm of mercury to break any bubbles in the mixture and remove moisture;to a vacuum reactor mixer having two input ports add the prepolymer, the preheated degassed liquid mixture and mix under vacuum of less than 5 mm of mercury of a period of time to provide a uniform mixture:removing the mixture from the vacuum reactor mixer and form into the desired shape,cure the formed shape to an elastomer substantially free of bubbles and foreign particles.
    • 一种制备基本上不含气泡和异物的导电聚氨酯弹性体的方法,包括:形成多元醇和异氰酸酯的预聚物,形成离子导电添加剂,一定量的交联剂和扩链剂的液体混合物足够 以提供交联的弹性体; 过滤添加剂的液体混合物,交联剂和扩链剂以除去外来颗粒; 将液体混合物预热至高于添加剂分解温度的温度,将交联剂和扩链剂在脱气炉中脱气至小于5mm汞柱,以破坏混合物中的任何气泡并除去水分; 到具有两个输入端口的真空反应器混合器中,加入预聚物,预热的脱气液体混合物并在小于5mm汞柱的真空下混合一段时间以提供均匀的混合物:从真空反应器混合器中除去混合物并形成 形成所需形状,将形成的形状固化成基本上不含气泡和异物的弹性体。
    • 38. 发明授权
    • Heat stabilized silicone elastomers
    • 热稳定硅酮弹性体
    • US4925895A
    • 1990-05-15
    • US194068
    • 1988-05-12
    • George J. HeeksArnold W. HenryEdward L. Schlueter, Jr.
    • George J. HeeksArnold W. HenryEdward L. Schlueter, Jr.
    • C08K3/24C08K3/00C08K3/30C08K3/32C08K5/00C08K5/36C08K5/59C08L83/00C08L83/04C08L83/05C08L83/07G03G15/20
    • 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, --As(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 redispersed 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,0 350,包含至少一个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个碳原子的烷基双基或具有少于19个碳原子的芳基双基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(R 2)2, -As(R 2)2,-S(R 2),其中每个R 2可以是氢或具有1至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),X是-N(R2) - ,--As(R2) - 或-S-,p是0 到4个在compos 其量足以抑制聚有机硅氧烷和细分散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例中,定影器构件由可加成固化的聚有机硅氧烷制成,并且配合物是双(乙二胺)硫酸铜(II)硫酸盐,最初再分散在低粘度硅油中,随后以更高的粘度分散 硅油。