| 摘要 |
PURPOSE: To improve adhesiveness to an Al plate and the mechanical strength of an image by using a high molecular compd. with a specified compd. CONSTITUTION: A high molecular compd. with a compd. represented by formula I is used. In the formula I, R is phenyl or 1-4C alkyl substd. phenyl, K is-S-, -O-, -CH2 -, etc., or is absent, each of P and P1 is 1-4C alkyl, methoxy, ethoxy, butoxy or H, X<-> is a sulfonate anion and (n) is about 50-1, 500. A coating material having sufficiently high film strength can be formed without requiring the addition of other film forming agent and the adhesiveness of the coating material on an Al plate to the covering material can be increased. |
