Processes of synthesizing multi-functional phosphorus-containing epoxy curing agent
US8822723B2 · kind B2 · utility
2Cited by
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18Claims
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Key dates
| Filing date | May 7, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | May 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/65719
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A series of curing agents are provided. The curing agents are multi-functional and phosphorus-containing. The curing agents have excellent processability to be used as an epoxy resin curing agent. The curing agents can be cured to obtain a phosphorus-containing epoxy thermoset with flame retardancy characteristic. The epoxy thermosets are very fit for circuit board substrate having high glass transition temperature; semiconductor packaging material; and related materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.