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    • 74. 发明授权
    • Higher alkoxy-substituted organopolysiloxane
    • 高级烷氧基取代的有机聚硅氧烷
    • US5310842A
    • 1994-05-10
    • US046287
    • 1993-04-14
    • Shoji IchinoheSyuichi Arai
    • Shoji IchinoheSyuichi Arai
    • A61K8/893A61Q19/00C08G77/08C08G77/12C08G77/14C08G77/18C08G77/38
    • A61K8/893A61Q19/00C08G77/38
    • The invention provides a higher alkoxy-substituted organopolysiloxane having, in a molecule, at least one alkoxy group of 4 to 30 carbon atoms bonded to the silicon atom excepting those at the molecular chain ends and still having a high degree of polymerization of at least 15. Such an organopolysiloxane, not known in the prior art, can be prepared by the dehydrogenation condensation reaction between an organohydrogenpolysiloxane and a higher aliphatic alcohol in the presence of a catalyst system consisting of a platinum compound and an organic acid such as acetic and citric acids. The higher alkoxy-substituted organopolysiloxane is useful as an additive in toiletry and cosmetic preparations by virtue of the good compatibility with other ingredients therein and high resistance against hydrolysis.
    • 本发明提供了在分子中具有至少一个与硅原子键合的至少一个具有4-30个碳原子的烷氧基的高级烷氧基取代的有机聚硅氧烷,除了分子链末端的那些,仍然具有至少15个聚合度 在现有技术中未知的这种有机聚硅氧烷可以通过在由铂化合物和有机酸如乙酸和柠檬酸组成的催化剂体系的存在下,通过有机氢聚硅氧烷和高级脂族醇之间的脱氢缩合反应来制备 。 高级烷氧基取代的有机聚硅氧烷由于与其它成分的良好相容性和高抗水解性而可用作化妆品和化妆品制剂中的添加剂。
    • 76. 发明授权
    • Odor-free purified polyether silicones and method for their production
    • 无气味纯化聚醚硅酮及其生产方法
    • US5288831A
    • 1994-02-22
    • US828824
    • 1992-01-31
    • Shoji IchinoheHideyuki Kawamoto
    • Shoji IchinoheHideyuki Kawamoto
    • C08G77/34C08G77/46C08G81/00C08L83/12C08G77/14
    • C08G77/46C08G77/34
    • Disclosed are purified polyether silicone addition reaction products of a hydrogen siloxane and a polyoxyalkylene containing a terminal double bond, which in unpurified form contains one or both of unreacted polyoxyalkylene and internal rearrangement side reaction products thereof which generate unpleasant odors in the reaction product upon storage and upon contact with water, substantially free from said unreacted polyoxyalkylene and rearrangement products thereof so that the total quantity of ketones and aldehydes produced by a treatment of the purified polyether silicones in a closed system at 60.degree. C. for 24 hours with a quantity of 10 .sup.4 N aqueous hydrochloric acid equivalent to the quantity of said polyether silicones, is no greater than 1,000 ppm of said polyether silicones, which purified polyether silicones are obtained by treating the unpurified form thereof with water, an aqueous solution of pH no greater than 7 or an acidic material, until substantially all of the odorous substances are produced and then removing the odorous substances therefrom.
    • 公开了氢化硅氧烷和含有末端双键的聚氧化烯的纯化聚醚硅氧烷加成反应产物,其以未纯化的形式含有未反应的聚氧化烯和内部重排副反应产物中的一种或两种,其在储存时在反应产物中产生令人不愉快的气味, 与水接触时,基本上不含所述未反应的聚氧化烯及其重排产物,使得通过将封闭体系中的纯化聚醚硅氧烷在60℃下处理24小时而产生的酮和醛的总量为10 与所述聚醚硅氧烷的量相当的4N盐酸水溶液,不大于1000ppm的所述聚醚硅氧烷,其纯化的聚醚硅氧烷通过用水处理其未纯化的形式,pH不大于7的水溶液或 酸性物质,直到几乎全部的气味 产生物质,然后从其中除去有害物质。