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Synthesis of novel bifunctional polymer stabilizers—A combination of HALS and UV absorber

Paper ID Volume ID Publish Year Pages File Format Full-Text
28631 44082 2006 8 PDF Available
Title
Synthesis of novel bifunctional polymer stabilizers—A combination of HALS and UV absorber
Abstract

The synthesis of new stabilizer type compounds (a combination between 2,2,6,6-tetramethylpiperidine and 2-hydroxyphenylbenzotriazole in one molecule) is reported. Six combined polymerizable stabilizers, containing one or two allyl groups, as well as two unsaturated allyloxy-[1,3,5]triazinyl-2,2,6,6-tetramethylpiperidines and three unsaturated allyloxy-[1,3,5]triazinyl-2-hydroxyphenylbenzotriazoles as individual stabilizers were synthesized. Their copolymers and the corresponding terpolymers of the individual stabilizers with methyl methacrylate were obtained. Chemical bonding of the stabilizers in the polymer was confirmed spectrophotometrically. The influence of these additives on the photostability of the copolymers was studied. The participation of the combined stabilizers in the polymerization did not affect considerably the molecular weight and the polydispersity of the copolymers. A significant stabilizing effect against photodegradation was determined. Polymerizable stabilizers, containing two different unsaturated groups in their molecule, showed considerably higher photostabilizing efficiency towards the compounds containing only one allyl group.

Keywords
Bifunctional polymerizable stabilizers; 2,2,6,6-Tetramethylpiperidines; 2-(2-Hydroxyphenyl)-benzotriazoles; Phase transfer catalysis; Copolymerization; Photostability
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Synthesis of novel bifunctional polymer stabilizers—A combination of HALS and UV absorber
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 180, Issues 1–2, 15 May 2006, Pages 205–212
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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