Epoxy-functional amidoamine reacted with excess polyamine and monoepoxy as epoxy curative
US6277928A · kind A · utility
10Cited by
16References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jun 10, 1998 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Jun 10, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/184
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water-dispersible curing agent for epoxy resins is prepared by the reaction of (a) an epoxy-functional compound obtained from the reaction of at least one epoxy resin and an amidoamine derived from the reaction of an acid-terminated polyalkylene glycol and a diamine in an active amine hydrogen:epoxy groups ratio of from 1:15 to 1:350, (b) at least one polyamine in an active amine hydrogen:epoxy groups ratio of from 2:1 to 30:1 which yields an amine-terminated product having an amine equivalent weight of at least 50, and, optionally, (c) a monoepoxy in a remaining active amine hydrogen:epoxy groups ratio of from 5:1 to 20:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.