Miscible polyester blends
US5134201A · kind A · utility
15Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/933
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Miscible blends of (1) a thermoplastic methylol polyester having backbone repeating units containing pendent hydroxyl and methylol moieties and divalent organic moieties such as 1,3-phenylene, 1,4-phenylene, 2,6-naphthalene, biphenylene and isopropylidene diphenylene, and (2) a linear, saturated polyester or copolyester of aromatic dicarboxylic acids, such as poly(ethylene-co-1,4-cyclohexanedimethylene terephthalate) (PETG) and poly(ethylene terephthalate) (PET), have improved clarity and exhibit enhanced barrier to oxygen relative to PET and PETG.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.