Copolyamide
US4051087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | May 20, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31739
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Normally solid, moldable polyamides having diamine-derived structural units of the formula ##STR1## wherein each A is individually selected from the group consisting of 5-methylnonamethylene, 2,4-dimethyloctamethylene, 2,4,6-trimethylheptamethylene, and 4-isopropylheptamethylene; first diacid-derived structural units of the formula ##STR2## and second diacid-derived structural units of the formula ##STR3## wherein X is a divalent aliphatic hydrocarbon radical containing from 14 to 46 carbon atoms. Minor amounts of other polyamide-forming materials can be included in the copolyamide to provide up to 30 percent of the nitrogen atoms and up to 30 percent of the carbonyl groups. When used as adhesives, these copolyamides possess very good initial T-peel strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.