| abstract |
The present invention provides a crosslinkable composition that can be crosslinked by a Michael addition (RMA) reaction for forming a coating layer. At least one crosslinkable component including a reactive component A and a reactive component B each having at least two reactive groups, wherein at least two reactive groups of component A are present. It is an acidic proton (C—H) in the active methylene or active methine group (RMA donating group), and at least two reactive groups of component B are active unsaturated groups (C═C) (RMA accepting group) Thus, crosslinking by a true Michael addition (RMA) reaction is achieved, and the composition further comprises X—a Michael addition donor which can also react with component B under the action of the base catalyst (C), catalyst C. A crosslinkable composition comprising an H group-containing component (D) (wherein X is C, N, P, O, or S) and a sagging suppression component (E). The use method of the said crosslinkable composition for preparing a coating layer. [Selection] Figure 1 |