ASSOCIATED COMPOSITION, FASHIONABLE TO SEWING BY MICHAEL CONNECTION REACTIONS (RMA) Russian patent published in 2017 - IPC C08J3/00 C08J3/24 C08L67/00 C08G61/00 C09D5/00 C09D167/00 C08J5/18 

FIELD: chemistry.

SUBSTANCE: invention relates to a crosslinkable composition to crosslinking by the Michael addition reaction (RMA) to obtain a cured composition containing a component A having at least two acidic protons of the C-H in activated methylene or methine groups (RMA-donor group), a component B with at least two activated unsaturated groups (RMA-acceptor group) and C catalytic system containing or capable of producing a basic catalyst capable of activating RMA reaction between components A and B. The crosslinkable to position further comprises containing XH component D group, which also serves as a donor in the reaction of Michael addition, capable of reacting with component B under the influence of C catalyst, wherein X represents N, P, O, S, or wherein X is a C as a part of the acidic methyl group (CH₃). In this X-H group of component D is characterized by a pKa value determined in aqueous medium, at least one unit less than the corresponding value in the C-H groups in component A. Component A is preferably a malonate or acetoacetate. Also described are a set of two parts to obtain a crosslinkable composition, applying the component D as an additive to the crosslinkable RMA compositions blend RMA-additives for coatings of crosslinkable compositions use a mixture of RMA-additives in crosslinkable RMA-composition applying crosslinkable compositions for coatings as well as coating compositions, paints or films. As described coating composition further comprising one or more additives for coatings, such as pigments with the binder and the solvent.

EFFECT: providing a reaction time of induction profile for which slows curing and after which it is accelerated to quickly complete curing, the possibility to align after the application of the coating composition as a liquid with subsequent solidification, the absence of defects and surface irregularities of the coating.

30 cl, 7 dwg, 10 tbl, 15 ex