Cosmetic composition comprising polymers having a star structure, the polymers, and their use
申请人:Mougin Nathalie
公开号:US20050031574A1
公开(公告)日:2005-02-10
A composition capable of being applied to the hair, comprising, in a cosmetically acceptable medium, at least one polymer with a highly specific ordered structure is disclosed. A process for shaping or retaining the form of the hair using this composition and the use in the formulation of styling products, such as lacquers, sprays or foams, for the purpose of obtaining form retention or shaping of the hairstyle is also disclosed.
Vitamin B<sub>12</sub>Catalyzed Radical Cyclizations of Arylalkenes
作者:Wilfred A. van der Donk、Chris M. McGinley、Heather A. Relyea
DOI:10.1055/s-2005-923588
日期:——
The use of vitamin B 1 2 for synthetic organic transformations has been extensively studied. Herein, we report the intramolecular cyclization reaction of a series of arylalkene substrates catalyzed by vitamin B 1 2 . Thesereactions proceed in good yields in environmentally benign solvents and do not require the use of a toxic heavy metal catalyst. Variation of the reaction pH can predictably alter
已经广泛研究了维生素 B 1 2 在合成有机转化中的应用。在此,我们报告了一系列由维生素 B 1 2 催化的芳基烯烃底物的分子内环化反应。这些反应在环境友好的溶剂中以良好的产率进行,并且不需要使用有毒的重金属催化剂。反应 pH 值的变化可以预测地改变产物分布。
Organocatalytic formal [2+2] cycloaddition initiated by vinylogous Friedel–Crafts alkylation: enantioselective synthesis of substituted cyclobutane derivatives
An organocatalytic vinylogous Friedel-Crafts alkylation-initiated formal [2+2] cycloaddition was successfully developed based on tandem iminium-enamine activation of enals. Transformable pyrrole-functionalized cyclobutanes with three contiguous stereocenters were readily obtained with excellent levels of regio-, diastereo- and enantiocontrol.
Composition comprising polymers having a star structure, the polymers, and their use
申请人:L'OREAL, S.A.
公开号:US20020168332A1
公开(公告)日:2002-11-14
A composition, in particular a cosmetic composition, comprising, in an appropriate medium, at least one polymer with a highly specific ordered structure is disclosed. These compositions find a specific application in the field of make-up and are capable of being applied to the skin, semi-mucous membranes and/or mucous membranes. In particular, these compositions can be provided in the form of a transfer-free make-up composition.
The present invention relates to a composition comprising at least one propylene-based polymer, at least one peroxide, at least one grafting agent, and at least one coagent, and wherein the at least one coagent has the structure (VI) as follows:
wherein R is H, a hydrocarbon substituent, or a substituted hydrocarbon substituent.
本发明涉及一种包含至少一种丙烯基聚合物、至少一种过氧化物、至少一种接枝剂和至少一种助剂的组合物,其中至少一种助剂具有如下结构 (VI):
其中 R 是 H、烃取代基或取代的烃取代基。