Hardeners for epoxy resins
US4086197A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Apr 25, 1978 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to polyamino-amide hardeners for epoxy resins, the hardeners being the product resulting from the limination of at least one mole of water per acid equivalent from a mixture of: PA1 90 to 60 parts of at least one unsaturated monomeric fatty acid having at least 12 carbon atoms, PA1 10 to 40 parts of an acid having a molecular weight less than 200 PA1 20 to 80 parts of a polyalkylene-polyamine, and PA1 80 to 20 parts of isophorone diamine, the relative proportions of all the acid products with respect to all the amine products being from 1 to 2 gramme equivalents of acid function per gramme molecule of amine. The invention also relates to a method of hardening epoxy resins using the above hardeners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.