Amine-modified epoxy resin reacted in presence of latent hardener
US6831113B2 · kind B2 · utility
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6References
15Claims
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Key dates
| Filing date | Nov 13, 2001 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Nov 25, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for making a one-component epoxy resin system comprises reacting (A) an epoxy resin and (B) an amine solidifying system present in insufficient quantities to cause gelation in the presence of a latent hardener (C) and an expanding agent (E), each of which remains unreacted under the reaction conditions for (A) and (B), to yield a product with a Kofler Heat Bank melting point of less than 55° C. and a melting point stability of at least six months at normal workshop temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.