申请人:Clariant Finance (BVI) Limited
公开号:US05955005A1
公开(公告)日:1999-09-21
An aqueous dispersion comprising at least one of the UV absorbing compounds of the following formulae I, II or III as below defined: A--B (I); A--C--A (II); or B--A--B (III); wherein in Formula (I) and (II) ##STR1## and in Formula III, A is ##STR2## Y being a direct bond, a substitute C.sub.1-4 alkylene group, ##STR3## and R.sub.1 to R.sub.5 independently of each other are hydrogen; C.sub.4-4 alkyl, the alkyl optionally being substituted; aryl; heterocyclyl; or any two of R.sub.1 to R.sub.5 which are adjacent, together form part of a ring, with the proviso that no more than four of R.sub.1 to R.sub.5 are hydrogen.
以下定义的至少包含下列式子I、II或III中的一种的吸收紫外线化合物的水分散液:A--B(I);A--C--A(II);或B--A--B(III)。在式(I)和(II)中,##STR1##在式(III)中,A为##STR2##其中,Y为直接键,C.sub.1-4取代烷基,##STR3##R.sub.1至R.sub.5独立地为氢;C.sub.4-4烷基,该烷基可选地被取代;芳基;杂环基;或者相邻的R.sub.1至R.sub.5中的任意两个共同组成一个环,但是R.sub.1至R.sub.5中最多不超过四个为氢。