PRODUCTION OF INORGANIC CONDENSED COMPOSITION, STABLE INORGANIC CONDENSED COMPOSITION AND PRODUCTION OF LAMINATE

摘要

PURPOSE: To improve shelf stability of an inorganic composition by blending a specific condensed composition with an alkylalkoxysilane. CONSTITUTION: (A) A condensed composition is obtained by mixing 1mol of a tetraalkoxysilane of the formula Si(OR)4 (R is a 1-5C alkyl) with 2-8mol of basic water having pH10.0 to pH12.0 and 10-30mol of an organic solvent. (B) Another condensed composition is obtained by mixing 1mol of a tetraalkoxysilane of the formula Si(OR<1> )4 (R<1> is R) with 3-8mol of acidic water having pH0 to pH2.6 and 10-30mol of an organic solvent. (C) A condensed composition is obtained by mixing the component A with the component B in the weight ratio of the components A/B of 0.4-2.4. The component C is mixed with an alkylalkoxysilane of the formula (R<2> )n Si(OR<3> )4-n (R<2> and R<3> are each a 1-5C alkyl; (n) is 1-3) in an amount to give 0.1-2mol of the alkylalkoxysilane based on 1mol of the total of the tetraalkoxysilanes used in the production of the composition C.