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    • 4. 发明授权
    • Production of high-molecular-weight silicone resins
    • 生产高分子量有机硅树脂
    • US08748554B2
    • 2014-06-10
    • US13687112
    • 2012-11-28
    • Wacker Chemie AG
    • Frank Sandmeyer
    • C08G77/06
    • C08G77/02C08G77/06
    • Silicone resins with a weight average molecular weight of at least 5000 g/mol and polydispersity of ≦65 are prepared by hydrolyzing and condensing: (A) silicon-bonded alkoxylated and optionally hydroxylated silicone resin intermediate(s), (C) a basic or acidic catalyst or mixture thereof which is not completely self-neutralizing, (D) water, and (E) in the presence of an aliphatic carboxylic ester as the sole process solvent, with the provisos that I) alcohol eliminated in the reaction is removed from the reaction mixture by distillation, II) the catalyst (C) is deactivated by thermal treatment or neutralization, and III) a portion of (E) remains in the final product.
    • 通过水解和缩合制备重均分子量至少为5000g / mol和多分散性为nlE; 65的硅氧烷树脂:(A)硅键合的烷氧基化和任选羟基化的有机硅树脂中间体,(C)碱性 或不是完全自中和的酸性催化剂或其混合物,(D)水和(E)在脂肪族羧酸酯作为唯一的加工溶剂的存在下进行,条件是除去反应中除去的醇 通过蒸馏从反应混合物中,II)催化剂(C)通过热处理或中和而失活,和III)部分(E)保留在最终产物中。
    • 8. 发明申请
    • PRODUCTION OF HIGH-MOLECULAR-WEIGHT SILICONE RESINS
    • 生产高分子量有机硅树脂
    • US20130150547A1
    • 2013-06-13
    • US13687112
    • 2012-11-28
    • WACKER CHEMIE AG
    • Frank Sandmeyer
    • C08G77/02
    • C08G77/02C08G77/06
    • Silicone resins with a weight average molecular weight of at least 5000 g/mol and polydispersity of ≦65 are prepared by hydrolyzing and condensing: (A) silicon-bonded alkoxylated and optionally hydroxylated silicone resin intermediate(s), (C) a basic or acidic catalyst or mixture thereof which is not completely self-neutralizing, (D) water, and (E) in the presence of an aliphatic carboxylic ester as the sole process solvent, with the provisos that I) alcohol eliminated in the reaction is removed from the reaction mixture by distillation, II) the catalyst (C) is deactivated by thermal treatment or neutralization, and III) a portion of (E) remains in the final product.
    • 通过水解和缩合制备重均分子量至少为5000g / mol和多分散性为65的硅树脂:(A)硅键合的烷氧基化和任选羟基化的有机硅树脂中间体,(C)碱性或 酸性催化剂或其混合物,其不完全自中和,(D)水和(E)在脂肪族羧酸酯作为唯一的加工溶剂的存在下,条件是将I)在反应中除去的醇从 蒸馏反应混合物,II)催化剂(C)通过热处理或中和而失活,和III)部分(E)保留在最终产物中。