Patent ID: 7381784

Claim:
A method for producing an epoxy group-containing silicon compound, which comprises condensing at least one epoxy group-containing alkoxy silicon compound represented by the general formula (1a): R 1a Si(OR 2 ) 3 , wherein R 1a denotes a substituent having an epoxy group and R 2 denotes an alkyl group having at most 4 carbons, and at least one substituted alkoxy silicon compound represented by the general formula (1b): R 1b Si(OR 3 ) 3 , wherein R 1b denotes an alkyl group having at most 10 carbons, an aryl group or an unsaturated aliphatic residue and R 3 denotes an alkyl group having at most 4 carbons, in a solvent selected from the group consisting of dimethylformamide, dimethylacetamide, tetrahydrofuran, methyl ethyl ketone, and methyl isobutyl ketone in the presence of a basic catalyst.