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C - Chemistry, Metallurgy

08

L

400/5702, 18/908

C08L 67/00 (2006.01) B29C 39/10 (2006.01) C08J 7/04 (2006.01) C08L 67/02 (2006.01) D06M 15/507 (2006.01)

Patent

CA 2019284

A generally hydrophobic polyester article is provided with a generally hydrophilic surface by contacting said generally hydrophobic polyester with a copolymeric material while said polyester is at a temperature above its melting point. The copolymeric composition comprises a generally hydrophobic moiety and a generally hydrophilic moiety. Also disclosed is a method for imparting the hydrophilic surface to a generally hydrophobic polyester which method comprises contacting a generally hydrophobic polyester with a copolymeric material while said generally hydrophobic polyester is at a temperature above its melting point. In one preferred embodiment the generally hydrophobic polyester is contacted with said copolymeric composition immediately after said polyester has been extruded and while said polyester is undergoing die swell.

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