Method for charge-modifying polyester
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United States of America Patent
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Issued Date -
Oct 24, 2002
app pub date -
Aug 6, 2001
filing date -
Aug 4, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for producing charge-modified polyester comprising treating the polyester with at least one agent sufficient to cause hydrolysis of the polyester and a charge-modifier having one or more epoxy groups with a fixed formal charge, resulting in the formation of a bond between the one or more epoxy groups and the polyester. The polyester may be treated with the agent, which is presently preferred to be an alkaline, amine, or combination of both, and charge-modifier, which could have a positive or negative charge.
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