FIELD: chemistry.SUBSTANCE: invention relates to adhesion promoter based on carbodiimides, adhesion promoter-containing water resorcinol-formaldehyde latex dispersion, fibres with improved adhesion, compositions of adhesion promoter, methods of obtaining and application thereof for improvement of adhesion in tyres. Carbodiimide is selected from group of formulaand/orcompounds, where R stands for C-C-alkylene, C-C-cycloalkylene, arylene and/or C-C-aralkylene and j inside molecule are similar or different and have value from 1 to 5, and p stands for 0-500, which is superficially deactivated by exchange reaction with at least one amine, selected from group, including multifunctional primary and secondary amines.EFFECT: adhesion promoter provides excellent adhesion, its processing in further process does not result in release of toxic monomer isocyanates, and it can be obtained by simple production method.10 cl, 3 tbl
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