Delzenne, Gerard A. published the artcilePhotosensitive polymers. I. Synthesis and properties of coumarin-modified polymers, Recommanded Product: Coumarin-6-sulfonyl chloride, the publication is Industrie Chimique Belge (1967), 32(Spec. No.), 373-8, database is CAplus.
Polymers containing intramol. cinnamic esters of the coumarin type were synthesized by treating a poly(hydroxy ether) or partially hydrolyzed poly(vinyl butyral) with 6-coumarincarbonyl chloride, 6-coumarinsulfonyl chloride, or 7-coumarinyl 3-(chlorocarbonyl)-benzenesulfonate. A coumarin-containing copolymer was obtained by copolymerization of Et acrylate and 7-(acryloyloxy)coumarin. The photodimerization of coumarin functions by formation of a cyclobutane structure was useful for imagewise insolubilization of polymers. The photosensitivity of these polymers was compared with the sensitivity of poly(vinyl cinnamate). There was a linear relationship between the light sensitivity of the polymers and the degree of coumarin substitution. The photosensitivity can be enhanced by the addition of sensitizers of the carbonyl type. The more powerful sensitizer seems to be p,p’-bis(dimethylamino)-benzophenone. The sensitization was attributed to a triplet-triplet energy transfer between the light-excited sensitizers and the coumarin units.
Industrie Chimique Belge published new progress about 10543-42-7. 10543-42-7 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Chloride,Sulfonyl chlorides,Ester, name is Coumarin-6-sulfonyl chloride, and the molecular formula is C9H5ClO4S, Recommanded Product: Coumarin-6-sulfonyl chloride.
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