Polyester with improved gas barrier properties from cycloalkylidene bis (p-phenyleneoxy) diacetic acid
US4963641A · kind A · utility
20Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1989 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | May 30, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/185
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyester resins usefurl for forming containers having improved resistance to gas permeability comprising the reaction product of PA0 (A) a dicarboxylic acid corresponding to the structure ##STR1## wherein X is hydrogen or unstubstituted alkyl containing 1-5 carbons and n is an integer in the range of 4 to 10, and PA0 (B) a diol selected from the group consisting of ethylene glycol, 1,4-butanediol and 1,4-cyclohexanedimethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.