[EN] SUNSCREEN COMPOSITIONS CONTAINING A COMBINATION OF A LINEAR ULTRAVIOLET RADIATION-ABSORBING POLYETHER AND OTHER ULTRAVIOLET-SCREENING COMPOUNDS [FR] COMPOSITIONS DE PROTECTION SOLAIRE CONTENANT UNE COMBINAISON D'UN POLYÉTHER LINÉAIRE ABSORBANT LES RAYONNEMENTS ULTRAVIOLETS ET D'AUTRES COMPOSÉS DE PROTECTION CONTRE LES ULTRAVIOLETS
[EN] SUNSCREEN COMPOSITIONS CONTAINING A COMBINATION OF A LINEAR ULTRAVIOLET RADIATION-ABSORBING POLYETHER AND OTHER ULTRAVIOLET-SCREENING COMPOUNDS [FR] COMPOSITIONS DE PROTECTION SOLAIRE CONTENANT UNE COMBINAISON D'UN POLYÉTHER LINÉAIRE ABSORBANT LES RAYONNEMENTS ULTRAVIOLETS ET D'AUTRES COMPOSÉS DE PROTECTION CONTRE LES ULTRAVIOLETS
Processes for the preparation of benzotriazole UV absorbers
申请人:——
公开号:US20020035175A1
公开(公告)日:2002-03-21
Provided is a process for preparing 2H-benzotriazole UV absorbers containing a perfluoroalkyl moiety at the 5-position of the benzo ring, for example a trifluoromethyl group, which involves diazotizing the perfluoroalkyl substituted o-nitroaniline using concentrated sulfuric acid plus sodium nitrite or nitrosylsulfuric acid to form the corresponding monoazobenzene intermediate via the diazonium salt intermediate which is reduced to the corresponding 5-perfluoroalkyl substituted 2H-benzotriazole UV absorber compound by conventional reduction means. Also provided is a novel one-pot, multiphase reaction for the preparation of 2(2-nitrophenylazo) substituted phenols, which are precursors for 2H-benzotriazole UV absorbers.
SUNSCREEN COMPOSITIONS CONTAINING AN ULTRAVIOLET RADIATION-ABSORBING POLYMER
申请人:Johnson & Johnson Consumer Companies, Inc.
公开号:US20140004063A1
公开(公告)日:2014-01-02
Compositions including a discontinuous oil phase homogeneously dispersed in a continuous water phase, the oil phase containing a sunscreen agent that includes a polymer composition containing a linear, ultraviolet radiation absorbing polyether, the linear, ultraviolet radiation absorbing polyether including a chemically bound UV-chromophore; and an oil-in water emulsifier component including an anionic oil-in-water emulsifier in an amount such that the composition includes about 0.5 percent by weight to about 3 percent by weight of the anionic oil-in-water emulsifier.
A polymer composition comprising a linear ultraviolet radiation absorbing polyether that comprises a chemically bound UV-chromophore.
一种聚合物组合物,包括一种线性紫外辐射吸收聚醚,该聚醚包含化学键结合的紫外光色团。
Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols
申请人:Pastor Daniel Stephen
公开号:US20050053562A1
公开(公告)日:2005-03-10
Provided is a novel one-pot, organic solvent-free process for the preparation of 2-(2-nitrophenylazo) substituted phenols. The 2-(2-nitrophenylazo) substituted phenols are precursors for hydroxyphenylbenzotriazole UV absorbers.
57 Ultraviolet light absorbing polymer compositions comprising copolymers of 2-Hydroxy-5-acrylyloxyphenyl -2H-benzotriazoles with one or more other monomers copolymerizable therewith, particularly acrylic monomers are useful in the manufacture of occular devices, particularly intraoccular lenses and contact lenses. The benzotriazole monomers are prepared from the corresponding intermediate phenyl alcohols 2'-Hydroxy -5'- acrylyloxyphenyl -2H-benzotriazoles.