Polyamidoamine curing agents based on mixtures of fatty and aromatic carboxylic acids
US6258920A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D163/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Compositions of amine terminated polyamidoamine resins useful for curing epoxy resins are disclosed comprising combinations of fatty monocarboxylic acids, aromatic mono- and dicarboxylic acids, and polyethyleneamines, wherein the ratio of equivalents of fatty monocarboxylic acid to aromatic monocarboxylic acid can range from about 1:0.2 to about 1:1.5, the ratio of equivalents of monocarboxylic acids to aromatic dicarboxylic acid can range from about 1:0.1 to about 1:0.6, and the ratio of moles of total polyamine to equivalents of total acid can range from about 0.8:1 to about 1.3:1. Coating compositions comprising these polyamidoamine resins are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.