Polyester from hydroxyethoxyphenoxy acetic acid with improve gas barrier properties
US4956443A · kind A · utility
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4Claims
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Key dates
| Filing date | May 30, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | May 30, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/664
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyester resins useful for forming containers having improved resistance to gas permeability comprised of recurring units corresponding to the structure ##STR1## wherein R is selected from the group consisting of ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.