Polyester/polyamide blend having improved flavor retaining property and clarity
US5650469A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Oct 25, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention comprises polyester blend compositions having improved flavor retaining properties and color, comprising: PA1 (A) 98.0 to 99.95 weight percent of a polyester which comprises PA1 (1) a dicarboxylic acid component comprising repeat units from at least 85 mole percent terephthalic acid or naphthalenedicarboxylic acid derived from terephthalic acid or naphthalenedicarboxylic acid respectively; and PA1 (2) a diol component comprising repeat units from at least 85 mole percent ethylene glycol, based on 100 mole percent dicarboxylic acid and 100 mole percent diol; and PA1 (B) 2.0 to 0.05 weight percent of a polyamide; wherein the combined weights of (A) and (B) total 100 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.