Hot-melt adhesive copolyamide having resistance to engine fuels
US4386197A · kind A · utility
5Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1980 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | Jun 2, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31681
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hot-melt adhesives for articles which come into contact with organic fuels for internal engines comprising binary copolyamides having: PA1 A. 50-90 percent by weight of lactams or .omega.-aminocarboxylic acids having at least 10 methylene groups; and PA1 B. 50-10 percent by weight of equimolar quantities of aliphatic dicarboxylic acids and of aliphatic or cycloaliphatic diamines in which the total of the methyl, methylene and/or methylidyne groups present is at least 13. The extractable content in the copolyamide hot-melt adhesive is not more than 5 percent by weight as determined after 9 hours in boiling ethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.