Modified poly(ethylene terephthalate) having improved gas barrier properties
US4401805A · kind A · utility
24Cited by
6References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 1, 1982 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Mar 1, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are compositions having improved resistance to oxygen and carbon dioxide permeability comprising a copolyester derived from an acid component consisting essentially of 55-99 mol % terephthalic acid, 45-1 mol % of at least one acid of the formula HOOC--(CH.sub.2).sub.n --COOH where n is 1 to 6, and a glycol component, at least 60 mol % of which is ethylene glycol, the copolyester having an I.V. of about 0.1-1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.