Polyamide with improved gas barrier properties from cyclo-alkylidene bisphenoxy diacetic acid
US4959446A · kind A · utility
5Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | May 26, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyamide resins useful 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 unsubstituted alkyl containing 1-5 carbons and n is an integer in the range of 4 to 10, and PA0 (B) a diamine containing 5 to 16 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.