申请人:——
公开号:US20040049052A1
公开(公告)日:2004-03-11
Compounds having the formula: wherein R1 represents hydrogen, C1-C20 alkyl which is unsubstituted or substituted by one or more ammonium, mono-, di-, tri or tetra-C1-C12 alkylammonium groups or by one or more sulphonium groups or represents an aralkyl residue having a total of from 7 to 10 carbon atoms and, in which, the aryl group is unsubstituted or substituted by C1-C4alkyl, C1-C4 alkoxy or halogen and Z is a group selected from R2, R3 and R4, independently, representing hydrogen, C1-C4alkyl, C1-C4 alkoxy, halogen, NHCOC1-C4 alkyl or phenyl which is unsubstituted or substituted by. C1-C4 alkyl, C1-C4 alkoxy or halogen, a process 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 benzophenone compounds.
化合物的公式为:其中R1代表氢,C1-C20烷基,该烷基未取代或被一个或多个铵、单、双、三或四个C1-C12烷基铵基团取代,或被一个或多个磺酸基团取代,或代表一个总碳数为7至10的芳基烷基残基,在其中,芳基未取代或被C1-C4烷基、C1-C4烷氧基或卤素取代,Z是从R2、R3和R4中选择的基团,独立地代表氢、C1-C4烷基、C1-C4烷氧基、卤素、NHCOC1-C4烷基或未取代或被C1-C4烷基、C1-C4烷氧基或卤素取代的苯基,以及它们的制备方法和化合物的应用公式(1)作为紫外线吸收剂,具有改善的吸收光谱特性、优异的抗紫外线辐射性能和优良的热稳定性,相对于已知的苯酮化合物。