monocomponent based coreactive latex preparation procedure and application in the field of free coatings formol system.

摘要

monocomponent based coreactive latex likely to lead to free coatings formol, crosslinkable at room and postreticulables temperature heat treatment, the said system consisting of the mixture of two particle dispersions (A) and (B) being system obtained each by emulsion polymerization in an aqueous medium a monomer composition a and B respectively: (a) at least one polymerizable ethylenically unsaturated monomer radically comprising a functional group, of formula a ** (See formula) * * in which R1 is a polymerizable radically grouping; X represents O or S, entering into the composition of monomers A; and (b) at least one polymerizable ethylenically unsaturated monomer radically, comprising - a radical ** (See formula) ** identical or different from the monomer (a), wherein R1 is a polymerizable group radical and X represents O or S; - A functional group chosen from acetal, mercaptal, mercaptol, dioxolane and dithiolane, of formula B1 B1-CHOH- (G) -CH (YR3) (ZR4) wherein - Y and Z, identical or different, represent O or S; - G represents a direct bond or an alkylene radical C1 -C4; - R3 and R4, identical or different, each represent a hydrogen atom or an alkyl group in C1, C8 or form together a -CH2-CR5R6- (CH2) n- where n = 0 or 1 and R5 and R6 are identical or different, each represent a hydrogen atom or a methyl group, entering into the composition of monomers B.