Tetracarboxylic acid dianhydride having disiloxane linkage and process for producing the same
US5242917A · kind A · utility
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6Claims
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Key dates
| Filing date | Mar 13, 1991 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Mar 13, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0838
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1-(2,3-Dicarboxyphenyl)-3-(3,4-dicarboxyphenyl)-1,1,3,3-tetramethyldisiloxa ne dianhydride is useful as a curing agent for epoxy resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.