申请人:——
公开号:US20040013619A1
公开(公告)日:2004-01-22
The present invention provides compounds having the formula (1) in which each of the radicals R
1
, R
2
, R
3
and R
4
, independently, represent hydrogen, hydroxy, halogen, C
1
-C
20
-alkyl, C
1
-C
20
-alkoxy, CN or COOR
5
, in which R
5
is C
1
-C
20
-alkyl and Z represents a heterocyclic residue selected from the 2H-benzo[1,2-d]triazol-2-yl, 2H-naphtho[1,2-d]triazol-2-yl, benzimidazol-2-yl, benzoxazol-2-yl and benzofuran-2-yl moieties, optionally substituted by C
1
-C
4
-alkyl, C
1
-C
4
-alkoxy, halogen or NHCOC
1
-C
4
-alkyl, a process for their preparation, new intermediate benzoxazinones useful for their preparation and use of the compounds of formula (1) as UV-absorbers which have improved absorption spectrum characteristics, superior resistance to exposure to UV light and excellent thermal stability, relative to known triphenyltriazine compounds.
本发明提供了具有以下式(1)的化合物,其中R1、R2、R3和R4中的每个基团独立地代表氢、羟基、卤素、C1-C20-烷基、C1-C20-烷氧基、CN或COOR5,其中R5是C1-C20-烷基,Z代表从2H-苯并[1,2-d]三唑-2-基、2H-萘[1,2-d]三唑-2-基、苯并咪唑-2-基、苯并噁唑-2-基和苯并呋喃-2-基残基中选取的杂环残基,可选择地经C1-C4-烷基、C1-C4-烷氧基、卤素或NHCOC1-C4-烷基取代,以及其制备方法,用于其制备的新中间体苯并噁唑酮,以及将式(1)化合物用作具有改善吸收光谱特性、优越的抗紫外光暴露能力和优异的热稳定性的UV吸收剂的用途,相对于已知的三苯基三嗪化合物。