7443-25-6 uv light stabilizers

Clariant Hostavin PR 25 / Sanduvor PR 25 equivalent;it can strognly abosorb UV-B (Low wavelength part of the ultraviolet spectruman;maximum wavelength up to 308nm ).it has higher absorb ratio compared with traditional Hydroxy-substituted benzotriazole and benzophenone type UV absorbers; doesn’t cause coloration of polymers which is impossible by traditionla UV absorbers;UV absorber PR 25 has great synergism effect with traditional hindered amine light stabilizers.

 

Chemical name: Propanedioic acid, [(4-methoxyphenyl)-methylene]-dimethyl ester;

 

Synonyms: Dimethyl (p-methoxybenzylidene)malonate; Propanedioic acid, ((4-methoxyphenyl)methylene)-, dimethyl ester; Propanedioic acid, [(4-methoxyphenyl)methylene]-, dimethyl ester; Propanedioic acid, 2-((4-methoxyphenyl)methylene)-, 1,3-dimethyl ester; Propanedioic acid, 2-[(4-methoxyphenyl)methylene]-, 1,3-dimethyl ester; EINECS 231-185-8; Dimethyl 2-(4-Methoxybenzylidene)Malonate; dimethyl 2-[(4-methoxyphenyl)methylidene]propanedioate; Malonic acid, (p-methoxybenzylidene)-, dimethyl ester (8CI);