ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Unsaturated polyester resins were prepared which have the polymerizable ultraviolet stabilizers 2(2-hydroxy-5-vinylphenyl)2H-benzotriazole or 2(2-hydroxy-5-isopropenylphenyl)2H-benzotriazole permanently incorporated in the polymer. The polyester resins were prepared with azobisisobutyronitrile as initiator at 60° C; the polymer composition consisted of 66% unsaturated polyester and 34% styrene with 0.5 mol % of polymerizable ultraviolet stabilizer. The polymer-bound ultraviolet stabilizer was evenly distributed throughout the polymer matrix. On accelerated aging, the relative amount of the ultraviolet stabilizer increased on the surface which was seen by ESCA spectroscopy as the polymer surrounding the stabilizer portion degraded. This behavior can also be seen, but not as pronounced, by reflection infrared experiments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00275975
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