Polymeric article having improved hydrophilicity and a method of making the same
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United States of America Patent
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Aug 17, 1999
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N/A
app pub date -
Jun 14, 1996
filing date -
May 19, 1994
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Abstract
A hydrophilic polymeric article has metal oxide particles dispersed throughout a polymeric binder material. A major surface of the polymeric material is treated so as to remove polymeric binder to provide a higher ratio of metal to carbon atoms on the major surface of the polymeric article relative to its interior. The polymeric article provides extraordinary water-spreading effects on the major surface, making the article particularly suitable for use as a surface covering on a retroreflective sheeting.
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