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Preparation and characterization of polymers with pending UV‐absorber groups. I. Polymers based on polydimethylsiloxane
Author(s) -
Riedel JanH.,
Höcker H.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070510321
Subject(s) - dicyclopentadiene , benzophenone , hydrosilylation , polymer , materials science , polymer chemistry , silane , polydimethylsiloxane , reagent , glass transition , polyurethane , molar absorptivity , chemical engineering , photochemistry , catalysis , chemistry , organic chemistry , composite material , polymerization , optics , engineering , physics
The hydrosilylation reaction using dichloro(dicyclopentadiene) platinium (II) as catalyst is carried out to synthesize polymeric UV absorbers with polysiloxane backbone. An almost quantitative addition of vinyl groups of the UV absorber (benzophenone) to silane groups is observed. The IR spectra indicate the qualitative results of the reaction, whereas the 1 H‐NMR spectra allow the following of the reaction quantitatively. Low glass transition temperatures are observed by DSC. UV spectroscopy shows that the extinction coefficient and spectra of the UV absorbers are hardly affected by the polymer analogous reaction. © 1994 John Wiley & Sons, Inc.

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