摘要:
A thermally conductive silicone rubber composition, comprising (A) a curable organopolysiloxane (B) a curing agent; and (C) a filler prepared by treating the surface of a thermally conductive filler with an oligosiloxane having a formula selected from (i) (R1O)aSi(OSiR23)(4−a) and (ii) (R1O)aR2(3−a)SiO[R22SiO]nSi(OSiR23)bR2(3−b) wherein R1 is alkyl, each R2 is independently a monovalent hydrocarbon group free of aliphatic unsaturation, subscript a is an integer from 1 to 3, b is an integer from 1 to 3, and n is an integer having a value greater than or equal to 0.
摘要:
An oligosiloxane having the formula (R1O)aSi(OSiR22R3)4−a wherein R1 is alkyl; each R2 is independently selected from C1 to C10 monovalent hydrocarbyl free of aliphatic unsaturation; R3 is hydrocarbly free of aliphatic unsaturation and having at least 11 carbon atoms; and a is 1, 2, or 3; and a method of preparing an alkoxy-functional oligosiloxane.
摘要:
A heat-conductive silicone composition comprising at least (A) an organopolysiloxane, (B) a heat-conductive filler, and (C) a specific organosiloxane. The silicone composition is excellent in handleability, even when it contains a large amount of a heat-conductive filler for the purpose of attaining higher heat conductivity.
摘要:
An organopolysiloxane which forms a cured product having a high refractive index, high transparency, and excellent heat resistance when subjected to a hydrosilylation reaction and which is represented by the following average unit formula: (R13SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d wherein, R1 are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; R2 is a group represented by R1 or a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group, but at least one of R1 or R2 in a molecule is an alkenyl group or a hydrogen atom, at least one R2 in a molecule is a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group; and a, b, c and d are numbers that satisfy: 0.01≦a≦0.8, 0≦b≦0.5, 0.2≦c≦0.9, 0≦d
摘要翻译:形成具有高折射率,高透明度和耐氢解性的固化产物的有机聚硅氧烷,其经受氢化硅烷化反应并由以下平均单元式表示:(R13SiO1 / 2)a(R12SiO2 / 2)b( R2SiO3 / 2)c(SiO4 / 2)d其中R1是烷基,烯基,苯基或氢原子; R2是由R1或稠合多环芳基或含有缩合多环芳基的基团表示的基团,但分子中的R 1或R 2中的至少一个为链烯基或氢原子,分子中至少1个 是稠合多环芳族基团或含缩合多环芳基的基团; 并且a,b,c和d是满足:0.01&nlE; a&nlE; 0.8,0和nlE; b&nlE; 0.5,0.2&nlE; c&nlE; 0.9,0&amp; nlE; d <0.2和a + b + c + d = 1的数字。
摘要:
A hydrosilylation curable silicone composition that forms a cured product with a high refractive index, high transparency, excellent heat resistance, and excellent flexibility, the hydrosilylation curable silicone composition comprising, as a main component, an organopolysiloxane represented by the following average unit formula: (R13SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d wherein, R1 are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; R2 is a group recited for R1, a condensed polycyclic aromatic group, or a group containing a condensed polycyclic aromatic group, provided that at least one of R1 or R2 in a molecule is an alkenyl group or hydrogen atom, and at least one R2 in a molecule is a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group; and a, b, c, and d are numbers satisfying: 0.01≦a≦0.8, 0≦b≦0.5, 0.2≦c≦0.9, 0≦d
摘要翻译:一种形成具有高折射率,高透明度,优异的耐热性和优异柔韧性的固化产物的氢化硅烷化可固化的硅氧烷组合物,所述氢化硅烷化可固化的有机硅组合物包含以下平均单元式代表的有机聚硅氧烷作为主要成分:( R13SiO1 / 2)a(R12SiO2 / 2)b(R2SiO3 / 2)c(SiO4 / 2)d其中R1为烷基,烯基,苯基或氢原子; R2是R1,稠合多环芳基或含有稠合多环芳基的基团,只要分子中的R 1或R 2中的至少一个为烯基或氢原子,并且至少一个R 2为 分子是缩合多环芳基或含缩合多环芳基的基团; 和a,b,c和d是满足:0.01&nlE; a&nlE; 0.8,0和nlE; b&nlE; 0.5,0.2&amp; nlE; c&nlE; 0.9,0和nlE; d <0.2和a + b + c + d = 1。
摘要:
A curable organosiloxane composition comprising: (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule; (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; (C) a compound having an alkenyl group and a phenol residue of the formula: where R1 is an alkyl group or alkoxy group, a is 1 or 2, and b is an integer from 0 to 3; and (D) a hydrosilylation reaction catalyst.
摘要:
A curable organopolysiloxane composition, comprising (A) an organopolysiloxane containing an average of at least 2 alkenyl groups and at least 2 silicon-bonded hydrogen atoms per molecule; (B) a compound containing alkenyl and hydroxyphenyl groups in each molecule, and (C) a hydrosilylation catalyst. A product formed by curing the organopolysiloxane composition and a unified article comprising a substrate and a product formed by curing the organopolysiloxane, wherein the substrate is unified into a single integral body with the cured product.
摘要:
This invention relates to a hydroxyphenyl group-containing organosilicon compound of the formula: where X is an alkenyl group; Z is a phenylene group or a carbonyloxy group expressed by —C(O)O-1, Y is a substituted or unsubstituted hydroxyphenyl group, R1 is a hydrocarbon group with two or more carbon atoms, with the various groups being the same or different, R is a monovalent hydrocarbon group containing no aliphatic unsaturated bonds, A is a divalent hydrocarbon group with one or more carbon atoms or a group expressed by the formula —R2—O—R2— where R2 is a divalent hydrocarbon group, m and p are 0 or 1, n is a number from 0 to 2, and q is an integer from 0 to 7. These compounds are useful in curable organosiloxane compositions.
摘要:
wherein A is hydrogen or a residue afforded by the removal of n hydroxyl groups from an m-valent alcohol, each R is independently a monovalent hydrocarbon group free of aliphatic unsaturation, each R1 is independently a divalent hydrocarbon group containing at least 2 carbon atoms, m and n are natural numbers wherein m≧n, p is 0 or 1, and Y is a phenol group having the formula: wherein R3 is alkyl and q is from 0 to 4. Also, a method of preparing a phenol-functional organosilicon compound.
摘要:
A methacryloxy group- or acryloxy group-containing polyorganosiloxane in which a methacryloxy group or acryloxy group is bonded to a silicon atom in the polyorganosiloxane across a long-chain alkylene group or poly(alkyleneoxy)-long chain-alkylene group having 11 to 20 carbon atoms. A method of producing this methacryloxy group- or acryloxy group-containing polyorganosiloxane, in which a silicon-bonded hydrogen atom-containing polyorganosiloxane is addition reacted in the presence of a hydrosilylation reaction catalyst with a 1-alkenyl methacrylate or a 1-alkenyl acrylate or a 1-alkenyloxypolyalkylene glycol methacrylate or a 1-alkenyloxypolyalkylene glycol acrylate.