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US 5,393,862 AGranted
Naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence
AssigneeEastman Chemical Company
InventorsAllan S. Jones, David E. Mills, Mitchell A. Winnik
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Abstract
This invention relates to naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence. More specifically, the polymers contain at least 0.1 mole percent of 2,6-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylate ester, with 0.1 to 5 mole percent of a copolymerizable aromatic ketone. These polymers are useful for packaging applications where clarity and/or aesthetic appeal are of concern.
Claims16
A naphthalenedicarboxylic acid containing polymer composition with reduced fluorescence comprising repeat units from:
- (a) a dicarboxylic acid component which comprises 0.1 to less than 85 mole percent of 2,6-naphthalenedicarboxylic acid or 2,6-naphthalenedicarboxylate esters;
- (b) a diol or diamine component;
- and
- (c) 0.1 to 5 mole percent, based on 100 mole percent dicarboxylic acid and 100 mole percent diol or diamine, of a nonhalogenated copolymerizable aromatic compound selected from the group consisting of benzene, naphthalene and biphenyl which has at least one acyl group directly attached to the aromatic ring of said aromatic compound.
1 more element
Dependencies are inferred from the claim text.