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Branched organosiloxane copolymers with terminal silicon-carbon groups useful as antimisting additives and for decreasing aerosol formation in crosslinkable silicone coating compositions
Branched organosiloxane copolymers with terminal silicon-carbon groups useful as antimisting additives and for decreasing aerosol formation in crosslinkable silicone coating compositions
Branched organosiloxane copolymers with terminal silicon-carbon groups are new. Branched organosiloxane copolymers of formula (I) with terminal silicon-carbon groups are new. Y(-CnH2n-(R2SiO)m-Ap-R2Si-G)x (I) -R2Si-R2-(R2SiO)m (II) Y = one to three valent 1-25C hydrocarbon group, containing one or more hetero atoms selected from nitrogen, oxygen and silicon; R = monovalent, optionally halogenated 1-18C hydrocarbon group; A = a residue of formula (II); R2 = divalent 2-30C hydrocarbon group, which can be interrupted by one or more oxygen atoms; G = a monovalent residue of formula CfH2f-2k-Z or a divalent residue of formula -CnH2n-, where the two bonds are bonds to a further Y group; Z = a monovalent terminal aliphatic hydrocarbon residue free from C-C multiple bonds, which is inert to SiH groups in hydrosilylation reactions, and which optionally comprises one or more hetero atoms selected from oxygen, nitrogen, boron, silicon, and titanium, or a monovalent polymer residue with more than 20 C atoms; x = 3-10; f, n = 2-12; k = 0 or 1; m = at least 1; and p = 0 or a positive number. with the proviso that the branched organosiloxane polymer contains on average at least one Z group. Independent claims are included for: (1) Preparation of the organosiloxane polymers (I) in a two step process; (2) A crosslinkable silicone coating composition with decreased aerosol formation comprising (X) an antimisting additive in accordance with the above, (A) organosilicon compounds comprising C-C unsaturation, (B) organosilicon compounds with silicon-bonded hydrogen atoms, (C) catalysts for the addition of silicon-bonded hydrogen to C-C unsaturation, and optionally (D) inhibitors; (3) A shaped body obtained by cross-linking the above coating composition; (4) A process for production of coatings by application of the crosslinkable composition to a surface, followed by crosslinking; and (5) A process for preparation of a coating of an adhesive material by application of the crosslinkable composition to the adhesive coating surface followed by crosslinking.
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机译：具有末端硅-碳基团的支化有机硅氧烷共聚物是新的。具有末端硅-碳基的式（I）的支化有机硅氧烷共聚物是新的。 Y（-CnH2n-（R2SiO）m-Ap-R2Si-G）x（I）-R2Si-R2-（R2SiO）m（II）Y = 1-3个含一个或多个杂原子的1-25C烃基选自氮，氧和硅; R ＝一价的，任选卤代的1-18C烃基; A =式（II）的残基; R 2 ＝可以被一个或多个氧原子间断的二价2-30C烃基; G ＝式CfH2f-2k-Z的一价残基或式-CnH2n-的二价残基，其中两个键为与另一个Y基团的键; Z ＝不含CC多键的单价末端脂族烃残基，其对氢化硅烷化反应中的SiH基团是惰性的，并且任选地包含一个或多个选自氧，氮，硼，硅和钛的杂原子或一价聚合物碳原子数超过20的残基; x = 3-10; f，n = 2-12; k = 0或1; m =至少1;并且p = 0或正数。条件是支链有机硅氧烷聚合物平均含有至少一个Z基团。包括以下独立权利要求：（1）在两步法中制备有机硅氧烷聚合物（I）; （2）具有减少的气雾形成的可交联的硅氧烷涂料组合物，其包含（X）根据上述的防雾添加剂，（A）包含CC不饱和度的有机硅化合物，（B）具有与硅键合的氢原子的有机硅化合物，（C）催化剂用于将硅键合的氢添加至CC不饱和键，以及可选的（D）抑制剂; （3）通过使上述涂料组合物交联而得到的成型体。 （4）通过将可交联的组合物施加到表面上，然后交联来生产涂料的方法; （5）通过将可交联组合物施加到粘合剂涂层表面上然后进行交联来制备粘合剂材料的涂层的方法。
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