Patent ID: 8481654

Claim:
A storage stable composition, comprising: the reaction products of 3-glycidyloxypropyltrimethoxysilane; a colloidally disperse silica sol having a pH of 3-5 and a solids content of greater than 20 to 50% by weight; at least one of acetic acid and maleic acid; and n-propyl zirconate; wherein a mean particle diameter of particles of the silica sol is from 40 to 200 nm, a flash point of the composition is 90° C. or higher, a chloride content of the composition is less than 0.8% by weight, and the composition is obtained by hydrolysis and further reaction of a mixture comprising: (i) 3-glycidyloxypropyltrimethoxysilane, (ii) the colloidally disperse silica sol, (iii) an organic acid hydrolysis catalyst selected from the group consisting of acetic acid and maleic acid, and (iv) n-propyl zirconate as crosslinker; followed by distillation of alcohol resulting from hydrolysis.