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1. 发明授权

US06515043B2 Silicone oligomers with higher alkoxy groups 有权
标题翻译：具有较高烷氧基的硅氧烷低聚物
公开(公告)号：US06515043B2
公开(公告)日：2003-02-04
申请号：US09812920
申请日：2001-03-20
申请人： Herbert B. Petty , Robert Pickwell
发明人： Herbert B. Petty , Robert Pickwell
IPC分类号： C08K906
CPC分类号： C08G77/485 , C08F290/148 , C08G77/045 , C08K5/5425 , C08L23/16
摘要： An oligomer of the formula: [R3SiO½]m[O½Si(R2)O½]n[SiO{fraction (3/2)}R]o[SiO{fraction (4/2)}]p (I) wherein each R is selected individually from the group consisting of R1, —OR2 and —OR3; each R1 is independently a substituted or unsubstituted hydrocarbon group; each R2 is a C1-C6 alkyl group or an acyl group; and each R3 is a independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that if R3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the —OR3 group; at least one R group is —OR3; at least one quarter of all R groups are —OR2 or —OR3; m=2 to 20; n=0 to 50; o=0 to 20; and p=0 to 10. The oligomer is a useful component of in insulation formulations for wire and cable used in underground locations.
摘要翻译：下式的低聚物：其中R独立地选自由R1，-OR2和-OR3组成的组; 每个R 1独立地是取代或未取代的烃基; 每个R 2是C 1 -C 6烷基或酰基; 并且每个R 3独立地为具有至少8个碳原子的烷基或烯基;条件是如果R 3是烯基，则在与-OR 3基团的氧原子相邻的两个碳原子内不存在不饱和键; 至少一个R基团是-OR 3; 所有R基团中至少四分之一为-OR2或-OR3; m = 2〜20; n = 0〜50; o = 0〜20; 并且p = 0至10.低聚物是用于地下位置的电线和电缆的绝缘配方中的有用组分。

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