Multicomponent epoxide resin composition and curing agent component therefor
US11542363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Oct 19, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/17
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curing agent component is useful for a multicomponent epoxide resin composition. An epoxide resin composition produced using the curing agent component, wherein the curing agent component includes, as a curing agent, at least one Mannich base and an amine that is reactive with respect to epoxide groups, as well as at least one polyphenol from the group of novolac resins as an accelerant. The Mannich base can he obtained by reacting a phenolic compound selected from phenol, styrenated phenol, catechol, resorcinol, hydroquinone, hydroxyhydroquinone, phloroglucinol, pyrogallol, o-cresol, m-cresol, p-cresol and bisphenols, with an aldehyde or an aldehyde precursor and an amine having at least two active hydrogen atoms in the molecule which are bonded to a nitrogen atom. The novolac resin is contained in the curing agent component in a proportion of 5-30 wt. %, based on the organic proportions of the curing agent component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.