Curing polyepoxide resin binders in syntactic foam forming compositions
US4412012A · kind A · utility
11Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1982 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Mar 25, 2002 |
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. 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.