Polythiols and use as epoxy resin curing agents
US4927902A · kind A · utility
7Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Aug 29, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polythiols prepared by the reaction of hydrogen sulfide or organic dithiols with polyglycidyl substituted amines have been found to be outstanding curing agents for epoxy resins. Epoxy resins cured with these polythiols are characterized by not only improved gel times, but also improved cure rates, better heat resistance and greater resistance to absorption of water. A useful polythiol is the reaction product of N,N,N',N'-tetraglycidyl-m-xylylenediamine with hydrogen sulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.