Patent ID: 8563132

Claim:
A glass fiber treated with a glass fiber-treating composition comprising a silane coupling agent solution having a glass fiber-treating agent dissolved therein, wherein a coupling agent in said silane coupling agent solution is at least one member selected from the group consisting of vinyltris(β-methoxyethoxy)silane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-chloropropyltrimethoxysilane, vinyltrichlorosilane, vinyltrimethoxysilane, vinylbenzylsilane, N-β-(N-vinylbenzylaminoethyl)-γ-aminopropyltrimethoxysilane hydrogen chloride, and mixtures thereof, and 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 having the average compositional formula (3): R 4 p R 5 q SiO (4-p-q)/2 (3) wherein R 4 is an aliphatic saturation-free, substituted or unsubstituted, monovalent hydrocarbon group of 1 to 10 carbon atoms, R 5 is an organic group having the formula: —C f H 2f O(C g H 2g O) h R 6 wherein R 6 is hydrogen, an aliphatic saturation-free, substituted or unsubstituted, monovalent hydrocarbon group, or an acetylene group, f is an integer of 2 to 12, g is an integer of 2 to 4, h is an integer of 1 to 200, and p and q are positive numbers wherein 0≦p<3.0, 0<q<3.0, and 0<p+q≦3.0, 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.