초록 ▼

Resinous composition comprising: (A) 100 weight parts of description="In-line Formulae" end="lead"(R2 SiO2/2)w(RSiO3/2)x(SiO4/2) y(O1/2R1)zdescription="In-line Formulae" end="tail" wherein R is selected from the group consisting of monovalent hydrocarbon groups having 1 to 10 carbon atoms, R1 is s

Resinous composition comprising: (A) 100 weight parts of description="In-line Formulae" end="lead"(R2 SiO2/2)w(RSiO3/2)x(SiO4/2) y(O1/2R1)zdescription="In-line Formulae" end="tail" wherein R is selected from the group consisting of monovalent hydrocarbon groups having 1 to 10 carbon atoms, R1 is selected from the group consisting of the hydrogen atom and saturated hydrocarbon groups having from 1 to 6 carbon atoms, w is a number from 0 to 0.2, x is a number from 0.4 to 0.9, y is a number from 0.1 to 0.6, z is a number from 0.1 to 0.5, and (w+x+y)=1; (B) 20 to 150 weight parts of an alcohol-based solvent; (C) 100 to 1000 weight parts of a solvent selected from the group consisting of hydrocarbon-based solvents and polydimethylsiloxanes described by the formula Me3SiO(Me2SiO)n SiMe3, wherein Me is the methyl group and n has a value of 0 or 1; (D) 1 to 100 weight parts of a coupling agent selected from the group consisting of alkoxysilanes and silane coupling agents; (E) 0.1 to 20 weight parts of a condensation catalyst, and (F) 0.1 to 20 weight parts of a polyoxyalkylene-modified silicone.

대표청구항 ▼

What is claimed is: 1. A resinous water-repellent coating comprising: (A) 100 weight parts of a polyorganosiloxane described by the average formula description="In-line Formulae" end="lead"(R2 SiO2/2)w(RSiO3/2)x(SiO4/2)y(O1/2R') z,description="In-line Formulae" end="tail" wherein R selected fro

What is claimed is: 1. A resinous water-repellent coating comprising: (A) 100 weight parts of a polyorganosiloxane described by the average formula description="In-line Formulae" end="lead"(R2 SiO2/2)w(RSiO3/2)x(SiO4/2)y(O1/2R') z,description="In-line Formulae" end="tail" wherein R selected from the group consisting of monovalent hydrocarbon groups having 1 to 10 carbon atoms, R' is selected from the group consisting of the hydrogen atom and saturated hydrocarbon groups having from 1 to 6 carbon atoms, w is a number from 0 to 0.2, x is a number from 0.4 to 0.9, y is a number from 0.1 to 0.6, z is a number from 0.1 to 0.5, and (w+x+y)=1; (B) 20 to 150 weight parts of an alcohol-based solvent; (C) 100 to 1000 weight parts of a solvent selected from the group consisting of hydrocarbon-based solvents and polydimethylsiloxanes described by formula Me3SiO(Me2SiO)nSiMe3, wherein Me is the methyl group, and n has a value of 0 or 1; (D) 1 to 100 weight parts of a coupling agent selected from the group consisting of alkoxysilanes and silane coupling agents; (E) 0.1 to 20 weight parts of a condensation catalyst, and (F) 0.1 to 20 weight parts of a polyoxyalkylene-modified silicone. 2. The resin composition of claim 1, wherein the (SiO 4/2) units in component (A) are derived from colloidal silica. 3. The resin composition of claim 1, wherein the polyorganosiloxane of component (A) is obtained by the hydrolysis and condensation of an organotrialkoxysilane in the presence of colloidal silica. 4. The resin composition of claim 2, wherein the polyorganosiloxane of component (A) is obtained by the hydrolysis and condensation of an organotrialkoxysilane and a diorganodialkoxysilane in the presence of colloidal silica. 5. The resin composition of claim 2 wherein there is a combination of colloidal silica having a mean grain size greater than 20 μm and a colloidal silica having a mean grain size of 20 μm or less. 6. The resin composition of claim 1, wherein x has a value of 0.6 to 0.9. 7. The resin composition of claim 2, wherein the colloidal silica has a mean grain size of 5 to 100 μm. 8. The resin composition of claim 1 comprising 50 to 140 weight parts of component (B) per 100 weight parts of component (A). 9. The resin composition of claim 1 wherein component (C) comprises a mixture of a hydrocarbon-based solvent and poly dimethylsiloxane in a weight ratio within a range of 95:5 to 40:60. 10. The resin composition of claim 1 further comprising wherein (F) is 0.1 to 20 weight parts of a polyoxyalkylene-modified silicone having a viscosity of 100 to 100,000 mPa.s at 25째 C.