Phenalkamine curing agents and epoxy resin compositions containing the same
US6262148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/623
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a compound according to formula (1) ##STR1## wherein n is 0, 2, 4 or 6 and a, b and c are, independently of one another, 1 or 0. R.sub.1-1a, R.sub.1-1b and R.sub.1-1c are hydrogen, a hydrocarbyl containing 1 to 10 carbon atoms which are alkyl, aryl, alkylene, arylalkyl or alkylaryl or a hydrocarbyl containing 1 to 10 carbon atoms and at least one heteroatom which can be oxygen, sulfur or nitrogen. R.sub.2-1a, R.sub.3-1a, R.sub.4-1a, R.sub.5-1a, R.sub.2-1b, R.sub.3-1b, R.sub.4-1b, R.sub.5-1b, R.sub.2-1c, R.sub.3-1c, R.sub.4-1c and R.sub.5-1c hydrogen or C.sub.1 -C.sub.4 alkyl. R.sub.6-1a, R.sub.7-1a, R.sub.6-1b, R.sub.7-1b, R.sub.6-1c and R.sub.7-1c are C.sub.1 -C.sub.4 akyl. A is an aromatic or alicyclic ring having 5 to 7 carbon atoms. The present invention further relates to a Mannich base reaction product obtained by combining an extract from cashew nutshell liquid with at least one aromatic or alicylic polyamine and at least one aldehyde compound, epoxy resin compositions and curable formulations containing the same, and methods for using such compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.