Patent ID: 11795151

Abstract:
Provided is a benzotriazole compound that efficiently absorbs ray having a long wavelength of 360-400 nm, i) having excellent solubility in a monomer of a resin raw material, being dissolvable at a high concentration, polymerizing at excellent reactivity, and yielding a high-molecular-weight resin member and a transparent resin member, or ii) having exceptional heat resistance. This benzotriazole compound is represented by formula (I), where at least one of R1-R9 is represented by formula (i-1), (where R10 and R11 are hydrocarbon groups, etc., and R12 is represented by formula (i-2) or formula (i-3) (in formula (i-2), A1 represents a divalent group selected from nitrogen-Containing groups, oxygen-containing groups, sulfur-containing groups, phosphorus-containing groups, and phenylene groups, and R12a-R12c and X represent hydrocarbon groups, etc.; and in formula (i-3), A2 represents a divalent group selected from nitrogen-containing groups, oxygen-containing groups, sulfur-containing groups, and phosphorus-containing groups, and Xa and Xb represent hydrocarbon groups, etc.)).