Patent ID: 8216673

Claim:
A glass fiber-treating composition comprising a silane coupling agent solution, said silane coupling agent solution comprising a silane coupling agent selected from the group consisting of vinyltris(β-methoxyethoxy)silane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-aminopropyltriethoxysilane, methacrylate chromic chloride, γ-chloropropyltrimethoxysilane, vinyltrichlorosilane, vinyltrimethoxysilane, vinylbenzylsilane, N-γ-(N-vinylbenzylaminoethyl)-γ-aminopropyltrimethoxysilane hydrogen chloride, and mixtures thereof, having a glass fiber-treating agent dissolved therein, wherein said glass fiber-treating agent comprises (A) 5 to 95% by weight of at least one component selected from an acetylene glycol having the general formula (1): wherein R 1 and R 2 each are a C 1 -C 5 alkyl group, and an ethylene oxide and/or propylene oxide adduct of acetylene glycol having the general formula (2): wherein R 1 , R 2 and R 3 each are a C 1 -C 5 alkyl group, X and Z each are a positive number of 0.5 to 25, Y and W each are 0 (zero) or a positive number of more than 0 to 25, and the sum of X+Y+Z+W is 1 to 50, and (B) 5 to 95% by weight of a polyoxyalkylene-modified silicone selected from the group consisting of the polyoxyalkylene-modified silicones of the following formulae (6) to (13): the content of said glass fiber-treating agent being 0.01 to 5% by weight to the total weight of the silane coupling agent solution.