High glass transition temperature epoxy formulations for cryogenic applications
US11377519B1 · kind B1 · utility
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21Claims
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Key dates
| Filing date | May 7, 2019 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Dec 8, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0194
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of increasing the glass transition point of a cured epoxy comprising a bisphenol A diglycidyl ether and a polyetheramine includes the step of including 1,8-diamino-p-menthane as an additional hardener for curing the epoxy. An epoxy formulation includes bisphenol A diglycidyl ether and a hardener including a polyetheramine and 1,8-diamino-p-menthane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.