Amorphous copolyamide from lactam, dicarboxylic acid and bisimidazoline
US4423204A · kind A · utility
1Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1982 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Sep 2, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel amorphous copolyamides are provided which are the product of reaction of (A) a lactam, (B) a bisimidazoline, and (C) a dicarboxylic acid, wherein the proportions of reactants based on 100 mole percent are from about 43 to about 82 mole percent of lactam (A) and the remaining 18 to 57 mole percent divided between said (B) and said (C) in substantially equimolar proportions. The copolyamides are characterized by better resistance to elevated temperatures than 100 percent polycaprolactam polyamides but at the same time are easily molded because of their amorphous character.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.