Patent ID: 7648609
Filing Date: 2010-01-19
Classification: C08L,C09J

Abstract:
1. A method for bonding a two-phase polymer combination dissoluble in aqueous alkali to a surface of at least one substrate, said two-phase polymer combination consisting essentially of a. an alkali-soluble copolymer or terpolymer of an α, β-unsaturated monocarboxylic acid which possesses carboxyl groups distributed essentially uniformly over the chain of the molecule, as a continuous phase, and b. a copolymer or terpolymer which is insoluble in aqueous alkali and contains epoxy groups along its polymer chain, as a discontinuous finely disperse phase, wherein free epoxy groups on the surface of the polymer particles of the discontinuous phase are linked by esterification with some of the carboxyl groups of the polymer of the continuous phase, and the remaining carboxyl groups are present in unchanged form, comprising the steps of: providing said two-phase polymer combination, supplying aqueous moisture to said polymer combination, and applying the moist polymer combination to said surface of said at least one substrate; and wherein the polymer combination is applied in the form of a film.