申请人:CRODA INTERNATIONAL plc
公开号:EP0327379A2
公开(公告)日:1989-08-09
Compounds of the formulae:
are useful as humectants e.g. in cosmetic compositions. In the formulae, n is 1 or 2, q and p are positive integers and the product of q and p is equal to n; R¹ is a saturated or unsaturated hydrocarbyl radical and when n is 1, R¹ can be hydrogen, and when n is 2, R¹ can be a single bond; R² is a substituted or unsubstituted alkylene group; R³, R⁴ and R⁵ are substituted and unsubstituted alkyl groups; and R⁶ is ethylene, substituted ethylene, or an ortho-aromatic structure. The compounds are prepared by reacting a carboxylic acid or derivative thereof with an N, N-disubstituted alkyldiamine in order to form a corresponding amide, and then quaternizing the amide with an alkylating agent.
式中的化合物
可用作保湿剂,如化妆品组合物中的保湿剂。式中,n 为 1 或 2,q 和 p 为正整数,q 和 p 的乘积等于 n;R¹ 为饱和或不饱和烃基,当 n 为 1 时,R¹ 可以是氢,当 n 为 2 时,R¹ 可以是单键;R² 是取代或未取代的亚烷基;R³、R⁴ 和 R⁵ 是取代和未取代的烷基;R⁶ 是乙烯、取代乙烯或正芳香族结构。这些化合物的制备方法是将羧酸或其衍生物与 N,N-二取代烷基二胺反应生成相应的酰胺,然后用烷化剂对酰胺进行季铵化。