Cyclic anhydride derivatives of hydrazide functionalized hindered amine light stabilizers
申请人:ATOCHEM NORTH AMERICA, INC.
公开号:EP0303282A2
公开(公告)日:1989-02-15
Amic acids, cyclic imides and mixtures thereof which contain both diacyl hydrazide functionalities and hindered amine functionalities of the formula
wherein R is selected from
X is. e.g.. 1,2-aryl diradical of 6-12 carbons,
R1 is, e.g.. hydrogen or alkyl of 1-20 carbons,
R2 is hydrogen or alkyl of 1-4 carbons,
R3 is, e.g.. hydrogen or hydroxyl and
Y is, e.g., -Z-C(=O)-N(R5)-,
wherein
Z is. e.g., -O- and R5 is. e.g., hydrogen or primary alkyl of 1-8 carbons,
are prepared by reacting non-halogenated cyclic anhydrides with hindered amine light stabilizers containing reactive hydrazido functionalities in inert solvents or in either neat or inert polymeric compositions in a melt blending step. The compositions protect polymeric compositions against the degradative effects of heat and light.
含二酰肼官能团和受阻胺官能团的式如下的胺酸、环状亚胺及其混合物
其中 R 选自
X 是6-12碳原子的1,2-芳基二环、
R1 是氢或 1-20 个碳原子的烷基、
R2 是氢或 1-4 个碳原子的烷基、
R3 是氢或羟基,以及
Y 是,例如,-Z-C(=O)-N(R5)-、
其中
Z 是-O-,R5 是氢或 1-8 碳原子的伯烷基、
通过在惰性溶剂中,或在熔融混合步骤中,将非卤化环酐与含有活性肼基官能团的受阻胺光稳定剂反应,制备非卤化环酐。这种组合物可以保护聚合物组合物免受热和光的降解作用。