发明名称 |
NOVEL DELIVERY OF HYDROXY CARBOXYLIC ACIDS |
摘要 |
The present invention provides greater than 99 % pure bis(triorganosilyl)hydroxycarboxylates of the general formulae: R3SiO-CHR<1>-COO-SiR3 and R3SiO-CHR<1>-R<2>COO-SiR3 wherein each R is independently a monovalent straight or branched chain alkyl or alkenyl group having from 1 to about 6 carbon atoms, or an aryl group, R<1> may be hydrogen, a monovalent straight or branched chain alkyl group having from 1 to about 18 carbon atoms, or an aryl group, and R<2> is a divalent straight or branched chain alkyl group having from 1 to about 18 carbon atoms, an aryl group, or a straight or branched chain alkaryl group having from 7 to about 18 carbon atoms; a process for producing the bis(trimethylsilyl)-hydroxycarboxylates comprising the trimethylsilylation with hexamethyldisilazane of the corresponding hydroxy carboxylic acids; cosmetic formulation comprising the greater than 99 % pure bis(trimethylsilyl)hydroxycarboxylates dissolved in aprotic media; and a method of delivering hydroxycarbxylic acids to the epidermis without apparent irritation or inflammation of the epidermis or stratum corneum.
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申请公布号 |
WO9945933(A9) |
申请公布日期 |
1999.11.18 |
申请号 |
WO1999US05200 |
申请日期 |
1999.03.10 |
申请人 |
PCR, INC. |
发明人 |
LEGROW, GARY, E.;TERRY, W., LEONARD, JR. |
分类号 |
A61K8/55;A01N55/00;A61K6/00;A61K8/00;A61K8/06;A61K8/58;A61K8/89;A61K8/891;A61K31/695;A61K31/74;A61P17/00;A61P43/00;A61Q19/00;A61Q19/08;(IPC1-7):A61K31/695 |
主分类号 |
A61K8/55 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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