Inventors:
Ajit K. Bose - Lawrenceville NJ
Michael Hughes - Levittown PA
Katherine C. Hlubik - Jacobstown NJ
Assignee:
Union Camp Patent Holding Co. - Princeton NJ
International Classification:
B41C 300
Abstract:
The present invention is directed to a method for removing ink from a substrate containing at least one synthetic polymeric resin which comprises contacting the substrate with an aqueous solution of a glycol ether for a time sufficient, and under conditions effective, to remove the ink, wherein the glycol ether may be represented by Formula (I) R. sub. 1 --O--R. sub. 2 --OH (I) wherein R. sub. 1 and R. sub. 2 are independently selected from the group consisting of alkyl groups having from 1 to about 8 carbon atoms. This invention also pertains to improved methods for preparing de-inked recycled substrates employing the aqueous solution of glycol ether.