Process for surface modification of polymer articles
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United States of America Patent
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Feb 25, 1992
Issued Date -
N/A
app pub date -
Aug 31, 1989
filing date -
Dec 23, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for modifying the surface region of a polymer article by incorporating one or more ingredients therein. Such ingredients may be ultraviolet light stabilizers, antioxidants, anti-static agents, pigments and the like. The polymer article, e.g. a sheet of polyvinyl chloride, is immersed in a liquid (e.g. water) and the immersed article is contacted with a solution of the ingredient in a solvent. The liquid must be one which is non-aggressive towards the article and must also be immiscible with the solvent.
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