FIELD: as rubber-cord mixmodifier. SUBSTANCE: product: composition comprising adhesive complex formed by structure-forming resorcinol substrate which is used in preformed reagent substrate, the complex is formed by using free resorcinol substrate selected from resorcinol, resortropin or slate alkyl resorcinol concentrate and stabilizing boric acid agent selected from sodium or potassium borate. The composition is made as prolonged on, for which purpose the composition comprises carboxylic acid agent additive based on urotropin salts of carboxylic acids selected from benzoic, adipic, maleic or phthalic acids, the ratio of ingredients being as follows, wt.-%: 14-30 (a); 15-40 (b); 1-15 (c); 15-70 (d). EFFECT: improved properties. 1 tbl
