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公开(公告)号：US4783543A
公开(公告)日：1988-11-08
申请号：US123850
申请日：1987-11-23
IPC分类号： C07F7/18
CPC分类号： C07F7/1892 , C07F7/188
摘要： A process for the preparation of silyl ketene acetals of the formula,R.sub.2 C.dbd.C(OSiR.sub.n X.sub.3-n)(OZ)or ##STR1## The process comprises contacting an alpha-ester of a carboxylic acid with an alkali metal in the presence of an excess of an organohalosilane, wherein the alpha-ester has the formula, ##STR2## and the organohalosilane has the formula,R.sub.n SiX.sub.4-n ;and facilitating reaction among the alpha-ester, the alkali metal, and the organochlorosilane to form the silyl ketene acetal and an alkali metal halide or an alkali metal alkoxide.
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公开(公告)号：US5320827A
公开(公告)日：1994-06-14
申请号：US73194
申请日：1993-06-08
CPC分类号： A61K8/11 , A61K8/26 , A61K8/28 , A61Q15/00 , A61K2800/412 , Y10S424/05
摘要： Encapsulated aluminum-zirconium salt compositions are produced by combining and heating an aqueous aluminum- zirconium salt selected from aluminum-zirconium halohydrates and mixtures thereof; a hydrophobic liquid; and a carboxylate. The mixture is heated until substantially all of the free water has been removed. The encapsulated aluminum-zirconium salts precipitate out after the removal of the water. The encapsulated aluminum-zirconium salts are useful in deodorant and antiperspirant compositions.
摘要翻译： 通过组合并加热选自铝锆锆盐酸盐及其混合物的铝 - 锆盐水溶液来制备包封的铝 - 锆盐组合物; 疏水液体 和羧酸盐。 将混合物加热直到基本上已经除去所有的游离水。 去除水后，封装的铝 - 锆盐沉淀出来。 封装的铝 - 锆盐可用于除臭和止汗组合物。
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公开(公告)号：US4824981A
公开(公告)日：1989-04-25
申请号：US69750
申请日：1987-07-06
CPC分类号： C07F7/188
摘要： A process for the preparation of silyl ketene acetals of the formulae, R.sup.1 R.sup.2 C=C(OR.sup.3)OSiR.sub.3.sup.4 and R.sup.1 R.sup.2 C=C[OSiR.sub.3.sup.4 ].sub.2,from the reaction of a malonate compound with a triorganohalosilane in the presence of an alkali metal. The malonate compounds are dialkyl dialkylmalonates, bis(trialkylsilyl) dialkylmalonates, and dialkylmalonic acids. The triorganohalosilane is present in stoichiometric excess relative to the malonate compounds. Silyl ketene acetals are isolated and separated.
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公开(公告)号：US5370874A
公开(公告)日：1994-12-06
申请号：US742671
申请日：1991-08-07
CPC分类号： A61Q15/00 , A61K8/11 , A61K8/26 , A61K8/28 , A61K2800/412 , Y10S424/05 , Y10S514/938 , Y10T428/2989
摘要： Encapsulated aluminum-zirconium salt compositions are produced by combining and heating an aqueous aluminum- zirconium salt selected from aluminum-zirconium halohydrates and mixtures thereof; a hydrophobic liquid; and a carboxylate. The mixture is heated until substantially all of the free water has been removed. The encapsulated aluminum-zirconium salts precipitate out after the removal of the water. The encapsulated aluminum-zirconium salts are useful in deodorant and antiperspirant compositions.
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公开(公告)号：US4824980A
公开(公告)日：1989-04-25
申请号：US239917
申请日：1988-09-02
CPC分类号： C07F7/1852
摘要： A process for preparing O-silyl O,N-ketene acetals having the formula, ##STR1## The process comprises contacting an alpha-haloamide with an alkali metal in the presence of an excess of an organohalosilane, the alpha-haloamide having the formula, ##STR2## the organohalosilane having the formula,R.sub.n SiX.sub.4-n ;and facilitating reaction among the alpha-haloamide, the alkali metal, and the organohalosilane to form the O-silyl O,N-ketene acetal and alkali metal halides.
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