Patent ID: 6726997
Filing Date: 2004-04-27
Classification: C08F,C08L,C09D,Y10T

Abstract:
An aqueous dispersion obtained by:mixing an emulsifying (A) at least one component selected from the group consisting of an organosilane represented by the following general formula (1), a hydrolysate of the organosilane, and a partial condensation product of the hydrolysate, (B) a radical polymerizable monomer, (C) an emulsifier, (D) a hydrolytic catalyst for component (A), and (F) a liquid component having a melting point of âˆ’50Â° C. or less, having no radical polymerizable properties, and having ultraviolet absorption action, light stabilization action, or both ultraviolet absorption action and light stabilization action, to form an emulsified mixture, to reduce the particle size of said emulsion, and to allow hydrolysis of component (A) to proceed; and then adding (E) a radical polymerizable initiator to allow polymerization of component (B) to proceed; wherein said aqueous dispersion has a concentration of one or more alcohols having a boiling point of 100Â° C. or less of 0.1% to 2.0% by weight: (R1)4âˆ’nâ€”(Si)â€”(OR2)nâ€ƒâ€ƒ(1) wherein R1 indicates a monovalent organic group having 1 to 8 carbon atoms, wherein when two R1's exist, they may be the same or different; R2 indicates a straight-chain or branched alkyl group having 1 to 5 carbon atoms or an acyl group having 1 to 6 carbon atoms, wherein when two R2's exist, they may be the same or different; and n is an integer of from 2 to 4.