Process for preparing naphthalenedicarboxylic acid containing polymer blends having reduced fluorescence
US5391330A · kind A · utility
6Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1994 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | May 5, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to naphthalenedicarboxylic acid containing polymer compositions having reduced fluorescence. More specifically, the process involves melt blending a naphthalenedicarboxylic acid containing polymer with 0.1 to 5 weight percent of a fluorescence quenching compound selected from a halogen containing aromatic compound, an aromatic ketone or a naphthol compound and thermoforming the blend into an article. The blends are useful for packaging applications where clarity and/or aesthetic appeal are of concern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.