Curing polyepoxide resin binders in high density syntactic foam forming compositions
US4410639A · kind A · utility
4Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1983 |
| Grant date | Oct 18, 1983 |
| Priority date | — |
| Expiry date | Apr 20, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams of high density. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.