Publication number: 20150175738
Abstract: The present invention provides a composition comprising 5,5?-oxybis(isobenzofuran-1,3-dione), 4,4?-oxybis(ortho-phthalic acid) and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3 a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione, and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for epoxy resins, said hardener system comprising said composition. The invention also provides a method for hardening of epoxy resins employing the inventive composition.
Type:
Application
Filed:
December 18, 2014
Publication date:
June 25, 2015
Applicant:
EVONIK INDUSTRIES AG
Inventors:
Benjamin WILLY, Manfred Neumann
Publication number: 20150175740
Abstract: The present invention provides a composition comprising 5,5?-carbonylbis(isobenzofuran-1,3-dione), 3,3?,4,4?-benzophenonetetracarboxylic acid and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for an epoxy resin, said hardener system comprising said composition. The invention also provides a method for hardening an epoxy resin employing the inventive composition.
Type:
Application
Filed:
December 18, 2014
Publication date:
June 25, 2015
Applicant:
EVONIK INDUSTRIES AG
Inventors:
Benjamin WILLY, Manfred Neumann