Phthalic acid derivatives which are substituted by 2-propynyloxy groups, processes for their preparation and their use
US4609741A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1984 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Aug 9, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C65/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel phthalic acid derivatives are described which are substituted by 2-propynyloxy groups, of the formula I ##STR1## in which Q.sub.1, and Q.sub.2 independently of one another are --OH or --O.sup.- M.sup.+, or Q.sub.1 and Q.sub.2 together form the grouping --O--, [O.sup.- ].sub.2 M.sub.1.sup.++ or --N(R.sub.2)--, M.sup.+ is an alkali metal ion, a trialkyl ammonium ion having 3-24 carbon atoms or a quaternary ammonium ion and M.sub.1.sup.++ is an alkaline earth metal ion, R.sub.2 is an alkyl group or an unsubstituted or substituted aryl group, n is 1 or 2 and R.sub.1 is hydrogen, if n is 1, or a direct bond, if n is 2, are described. The phthalic anhydrides which are substituted by 2-propynyloxy, of the formula I, can be used for curing epoxy resins, cured products with outstanding physical properties being obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.