Crystalline copolymers prepared from N,N'-terephthaloyldi-beta-alanine and a glycol
US4393192A · kind A · utility
64Cited by
8References
18Claims
0Family size
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Key dates
| Filing date | Dec 21, 1982 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Dec 21, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel water insoluble polyamide esters are prepared from dicarboxylic acid diamide derivatives of terephthalic acid and a glycol. In one embodiment, nearly perfectly alternating polyamide esters are prepared in the presence of antimony (III) acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.