Epoxy-functionalized novolak resin composition
US11674035B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Dec 7, 2018 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Nov 25, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition of epoxide-functionalized resins comprises at least a first epoxide-functionalized novolac resin, a second epoxide-functionalized novolac resin, and a curing agent selected from phenolic or amine-type curing agents, the average molar mass of the group consisting of the entirety of the epoxidized novolac resins in the said composition being between 550 and 650 g/mol, the average epoxide functionality of the said group being between 3 and 3.5 eq epoxide/mol, and the said composition having a glass transition temperature Tg of at least 160° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.