69698-20-0

Upstream product

• 108-24-7 acetic anhydride 
• 2440-22-4 2-(2-Hydroxy-5-methylphenyl)benzotriazole 
• 75-36-5 acetyl chloride 
• 119-66-4 2-nitrobenzenediazonium chloride 
• 1435-71-8 2-nitro-2'-hydroxy-5'-methyl-azobenzene 
• 106-44-5 p-cresol 

Downstream Products

• 86173-46-8 2-(2-hydroxy-3-acetyl-5-methyl-phenyl)benzotriazole 
• 21371-50-6 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxylic acid 
• 114226-62-9 2-(2H-1,2,3-benzotriazol-2-yl)-4-hydroxybenzenecarboxaldehyde 
• 114226-64-1 2-(2H-1,2,3-benzotriazol-2-yl)-4-dibromomethylphenyl acetate 

Relevant academic research and scientific papers

Synthesis of a novel water-soluble polymeric UV-absorber for cotton

A water-soluble polymeric UV-absorber with polyvinylamine as backbone and benzotriazole type UV absorber as anti-UV functional group was synthesized by grafting brominated (2′-acetoxy-5′-methylphenyl)-2H-benzotriazole onto polyvinylamine. The intermediate

WATER-SOLUBLE UV-ABSORBING COMPOUNDS AND USES THEREOF

Described herein are dimethyl acetal-containing UV-absorbing compounds and their uses in preparing UV-absorbing polyvinyl alcohol prepolymers suitable for producing UV- absorbing contact lenses capable of blocking ultra-violet ("UV") radiation and optiona

UV-ABSORBING VINYLIC MONOMERS AND USES THEREOF

Described herein are water-soluble UV-absorbing vinylic monomers and their uses in preparing UV-absorbing contact lenses capable of blocking ultra-violet (“UV”) radiation and optionally (but preferably) violet radiation with wavelengths from 380 nm to 440

Ultraviolet light absorbing ketones of 2-(2-Hydroxyphenyl) benzotriazole

The invention relates to ultraviolet light absorbing compounds, their preparation and uses as protective agents and stabilizers in coatings, plastics and topically applied products. The compounds are ketone derivatives of 2-(2-hydroxyphenol) benzotriazole of formula I, where R1 is hydrogen atom, or a halogen atom, or a straight-chain or branched lower alkyl or lower alkoxy of 1 to 4 carbon atoms; R2 is an unsubtituted or substituted aryl group or an unsubstituted or substituted straight-chain or branched alkyl having 1 to 18 carbon atoms or a cycloaliphatic group having 5 to 6 carbon atoms; and R3 is a straight-chain or branched alkyl or alkylaryl group or alkoxyl or phenyl or phenyl substituted with alkyl, cycloalkyl, carboalkoxy, chlorine or arylalkyl groups.

Synthesis of new ultraviolet light absorbers based on 2-aryl-2H- benzotriazoles

A procedure for the synthesis of some new ultraviolet absorbers of the benzotriazole series is reported. The compounds bear a carboxylic or a formyl group para to the hydroxy group, and these functionalities impart to the absorbers improved compatibility with certain disperse dyes on polyester fibers.

2-(formylphenyl) benzotriazole intermediates

Compounds of the formula STR1 wherein R is hydrogen or a hydroxy-protecting group are disclosed. The compounds are versatile intermediates which can be derivatized by reaction of the formyl group to provide a wide variety of ultraviolet-absorbing substitu