19-01-2012 дата публикации
Номер: WO2012008803A3
Принадлежит:
The present invention relates to a method for preparing poly(organic oxidized silicon) particles containing an ultraviolet-absorbing group, comprising a step of enabling organoalkoxysilane precursors selected from a group consisting of organotrialkoxysilane, diorganoalkoxysilane and a mixture thereof, to react, in the presence of a base, to a silane compound selected from a group consisting of tetraalkoxysilane, alkyltrialkoxysilane, tetraalkoxysilane, aryltrialkoxysilane, dialkyldialkoxysilane, diaryldialkoxysilane, arylalkyldialkoxysilane and a mixture thereof, serving as a cross-linking regulator and an ultraviolet stability enhancing agent, so as to prepare poly(organic oxidized silicon) particles selected from a group consisting of polysilsesquioxane, silsesquioxane-siloxane copolymer, silsesquioxane-silica copolymer, silsesquioxane-siloxane-silica copolymer and silsesquioxane-siloxane copolymer, having an ultraviolet-absorbing group. The poly(oxidized silicon) particles of the present ...
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