| 摘要 |
Provided is a method of forming an antifouling coating film including the steps of [1] preparing a colored antifouling paint containing a prescribed Si-containing hydrolyzable resin and a color pigment such that a coating film having a target dry film thickness T completely hides a surface of an object to be coated, the colored antifouling paint has a color difference ΔE1 between the coating film having the thickness T and a coating film having a dry film thickness of 0.8 T, at least 2.0, and preferably the colored antifouling paint has a color difference ΔE2 between the coating film having the thickness T and a coating film having a dry film thickness of 1.2 T, less than 1, and [2] coating a surface of the object with the colored antifouling paint until the surface of the object is completely hidden by the coating film formed from the colored antifouling paint. |
| 主权项 |
1. A method of forming an antifouling coating film on a surface of an object to be coated, comprising the steps of:
[1] preparing a colored antifouling paint containing a hydrolyzable resin and a color pigment and satisfying such conditions that
(a) a coating film formed from said colored antifouling paint having a target dry film thickness T completely hides the surface of said object to be coated,(b) a color difference ΔE1 between the coating film formed from said colored antifouling paint having the target dry film thickness T and a coating film formed from said colored antifouling paint having a dry film thickness of 0.8 T is equal to or greater than 2.0, and(c) said hydrolyzable resin contains a hydrolyzable resin (i); and [2] coating the surface of said object to be coated with said colored antifouling paint until the surface of said object to be coated is completely hidden by the coating film formed from said colored antifouling paint, said hydrolyzable resin (i) being a hydrolyzable resin having a metal-atom-containing group containing a divalent metal atom M and at least one type of a silicon-containing group selected from the group consisting of
a group expressed in a general formula (I) [where a and b each independently represent an integer from 2 to 5, m represents an integer from 0 to 50, n represents an integer from 3 to 80, and R1 to R5 each independently represent an alkyl group, an alkoxy group, a phenyl group, a substituted phenyl group, a phenoxy group, or a substituted phenoxy group],a group expressed in a general formula (II) [where c and d each independently represent an integer from 2 to 5, p represents an integer from 0 to 50, and R6, R7, and R8 each independently represent an alkyl group, Ra, or Rb, with Ra being (where x represents an integer from 0 to 20 and R23 to R27 are identical or different and represent an alkyl group), with Rb being (where y represents an integer from 1 to 20 and R28 and R29 are identical or different and represent an alkyl group)],a group expressed in a general formula (III) [where e, f, g, and h each independently represent an integer from 2 to 5, q and s each independently represent an integer from 0 to 50, r represents an integer from 3 to 80, and R9 to R12 each independently represent an alkyl group, an alkoxy group, a phenyl group, a substituted phenyl group, a phenoxy group, or a substituted phenoxy group], anda group expressed in a general formula (IV) [where i, j, k, and l each independently represent an integer from 2 to 5, t and u each independently represent an integer from 0 to 50, v and w each independently represent an integer from 0 to 20, and R13 to R22 are identical or different and represent an alkyl group]. |
