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    • 4. 发明授权
    • Silicone oligomers and curable compositions containing same
    • 硅氧烷低聚物和含有它们的可固化组合物
    • US06395856B1
    • 2002-05-28
    • US09445080
    • 1999-12-02
    • Herbert E. PettyRobert PickwellFrederick D. OsterholtzShiu-Chin Huang Su
    • Herbert E. PettyRobert PickwellFrederick D. OsterholtzShiu-Chin Huang Su
    • C08G7708
    • C08G77/485C08F290/148C08G77/045C08G77/12C08G77/18C08G77/20C08G77/442C08K5/5425C09D183/10C08L23/16C08L83/10C08L83/00
    • Oligomers of the formula: [R3SiO1/2]m[O1/2Si(R2)O1/2]n[SiO3/2R]o[SiO4/2]p  (I) wherein each R is selected individually from the group consisting of B, R1, —OR2, R3 and R4; B is an organosilyl functional group bridged to the Si atom of the siloxane oligomer backbone by an Si—C bond; each R1 is independently a saturated aliphatic hydrocarbon group of 1 to 16 carbon atoms; each R2 is independently a group as defined for R1, an aromatic hydrocarbon group or an acyl group; each R3 is independently a monovalent organic radical containing an aliphatically unsaturated hydrocarbon group and each R4 is a monovalent organic radical linked to the Si atom of the siloxane oligomer backbone by an Si—C bond, which does not include an aliphatically unsaturated hydrocarbon group and which has thereon one or more members of the group selected from aromatic hydrocarbon, ether, ester, carbamate, thioether, polysulfide, blocked mercaptan, amide, epoxy, cyano and oximato groups; and with the provisos that at least one quarter of all R groups are —OR2; either at least one silicon atom of the oligomer has an R3 group thereon or at least one R is a B, or both; if there is a group R3 which is a vinyl group, there is at least one other group which is a B group, an R3 group other than vinyl, or an R4 group; m=2 to 20; n=0 to 50; o=0 to 20; and p=0 to 10, are useful as coupling agents in curable compositions of filled organic polymers used for wire and cable insulation. The oligomers also have utility as crosslinkers, as adhesion promoters, to provide a dual radical/moisture cure mechanism, and/or to provide moisture resistance in coating, in other compositions, such as curable adhesives and coatings.
    • 下式的低聚物:其中R独立地选自B,R 1,-OR 2,R 3和R 4; B是通过Si-C键桥接到硅氧烷低聚物主链的Si原子上的有机甲硅烷基官能团; 每个R 1独立地为1至16个碳原子的饱和脂族烃基; 每个R 2独立地是如R1所定义的基团,芳族烃基或酰基; 每个R 3独立地是含有脂族不饱和烃基的一价有机基团,并且每个R 4是通过不包含脂族不饱和烃基的Si-C键与硅氧烷低聚物主链的Si原子连接的一价有机基团, 具有一个或多个选自芳族烃,醚,酯,氨基甲酸酯,硫醚,多硫化物,封端的硫醇,酰胺,环氧基,氰基和肟基的基团的成员; 并且条件是所有R组中至少四分之一为-OR2; 低聚物的至少一个硅原子在其上具有R 3基团或至少一个R是B或两者; 如果存在作为乙烯基的基团R 3,则至少另外一个为B基团,除乙烯基以外的R 3基团或R 4基团的基团; m = 2〜20; n = 0〜50; o = 0〜20; 和p = 0至10,可用作用于电线和电缆绝缘的填充有机聚合物的可固化组合物中的偶联剂。 低聚物在其它组合物如可固化粘合剂和涂料中也可用作交联剂,作为粘合促进剂,以提供双重自由基/湿度固化机理和/或提供涂层中的耐湿性。