Abstract:
THE PRESENT INVENTION PROVIDES A SILICON-CONTAINING CURABLE COMPOSITION WHICH CONTAINS: A SPECIFIC AMOUNT OF A SILICON-CONTAINING POLYMER THAT IS OBTAINED BY THE HYDROLYSIS-CONDENSATION OF AN ORGANOSILANE MIXTURE CONTAINING SPECIFIC AMOUNTS OF ORGANOSILOXANES REPRESENTED BY FORMULA (1-1) TO FORMULA (1-5) AND THAT HAS AN MW OF 300-100,000; A SPECIFIC AMOUNT OF A PREPOLYMER THAT IS OBTAINED BY HYDROSILYLATING A CYCLIC SILOXANE COMPOUND REPRESENTED BY FORMULA (2) AND A COMPOUND REPRESENTED BY FORMULA (3-1), (3-2) OR (3-3) AND THAT HAS TWO OR MORE SI-H GROUPS IN EACH MOLECULE; A SPECIFIC AMOUNT OF A LINEAR SILOXANE COMPOUND THAT HAS TWO OR MORE CARBON-CARBON DOUBLE BONDS, EACH OF WHICH IS REACTIVE WITH AN SI-H GROUP, IN EACH MOLECULE; A SPECIFIC AMOUNT OF AN ORGANIC PEROXIDE AND A SPECIFIC AMOUNT OF A METAL CATALYST; AND A SPECIFIC AMOUNT OF A FILLER. IN THIS CONNECTION, FORMULA (1-1) TO FORMULA (1-5), FORMULA (2), AND FORMULA (3-1) TO FORMULA (3-3) ARE AS SPECIFICALLY DEFINED IN THE DESCRIPTION.
Abstract:
A silicon-containing curing composition comprising a specific amount of a silicon-containing polymer having an Mw of 300 to 100,000 obtained by hydrolysis and condensation of an organosilane mixture containing specific amounts of organosiloxanes of formulae (1-1) through (1-5); a specific amount of a prepolymer containing at least two Si-H groups per molecule obtained by hydrosilylation between a cyclic siloxane compound of formula (2) and a compound of formula (3-1), (3-2), or (3-3); a specific amount of a linear siloxane compound containing more than one carbon-carbon double bond reactive with Si-H or Si-CH 3 per molecule; specific amounts of an organic peroxide and a metal catalyst; and a specific amount of a filler. The details for the formulae (1-1) to (1-5), (2), (3-1) to (3-3) are as described in the specification.
Abstract:
PROBLEM TO BE SOLVED: To provide silica sol which does not contain metallic components other than a salt necessary for particle growth, has low viscosity, is inexpensive and excellent in reinforcing effects of binder force and paint, etc. SOLUTION: The silica sol is obtained by dispersing branched chain silica particles in a dispersion medium, wherein the branched chain silica particles have a main chain part in which fine particles bond directly to each other without any bond part comprising another material and elongate in a fixed direction, and at least one branch part branched from the middle of the main chain part. COPYRIGHT: (C)2010,JPO&INPIT