Hindered amine light stabilizers containing aromatic carboxy groups and derivatives
申请人:ELF ATOCHEM NORTH AMERICA, INC.
公开号:EP0294818A2
公开(公告)日:1988-12-14
There are provided hindered amine light stabilizers of the general formula
wherein the hindered amine is attached to the nitrogen of an imide which also is attached to an aromatic group which contains a carboxy group and wherein
R1 is, e.g., hydrogen or substituted or unsubstituted aliphatic of 1-20 carbons;
Xis
R2 is, e.g., oxyl, hydroxy or substituted or unsubstituted aliphatic acyl of 1-20 carbons;
R3 is e.g., hydrogen or substituted or unsubstituted aliphatic of 1-20 carbons;
A is, e.g., halogen or sulfate; and
R4 is, e.g., hydroxy, halogen or a substituted or unsubstituted, mono or polyfunctional alcohol, amine, mercaptan or molecular mixture thereof, the carboxy group being a site for preparing unique derivatives, both polymeric and non-polymeric, useful as additives for preventing degradation of polymers and copolymers.
提供了通式如下的受阻胺光稳定剂
其中受阻胺连接到亚胺的氮上,而亚胺也连接到含有羧基的芳香基团上,并且
R1 是氢或 1-20 个碳原子的取代或未取代的脂肪族;
Xis
R2 是,例如,氧、羟基或 1-20 个碳原子的取代或未取代的脂族酰基;
R3 例如是氢或 1-20 个碳原子的取代或未取代的脂肪族;
A 是卤素或硫酸盐;以及
R4 例如是羟基、卤素或取代或未取代的单官能或多官能醇、胺、硫醇或它们的分子混合物,羧基是制备独特衍生物的部位,包括聚合物和非聚合物,可用作防止聚合物和共聚物降解的添加剂。