| abstract |
PROBLEM TO BE SOLVED: To provide a coating composition capable of forming a hard film, which is excellent in scratch resistance, weather resistance, flame retardancy, productivity and workability, and a coating thereof. To provide an article surface-treated with an agent. SOLUTION: The number average molecular weight is 500 or more, and 5 to 100 mol% of a silicon atom containing a (meth) acryl functional substituent is contained in all silicon, and R 1 SiX 3 (R 1 is a hydrogen atom) Or a substituted or unsubstituted organic group having 1 to 18 carbon atoms, and X is a group selected from a hydroxyl group, a hydrolyzable group, and a siloxane residue. Is a siloxane residue). A coating composition mainly containing an organopolysiloxane resin containing 00 mol%, wherein the R 1 SiX 3 A coating agent composition characterized in that 30 to 80 mol% is a unit containing one silanol group represented by R 1 Si (OH) Y 2 (Y is a siloxane residue). |