NEW AQUEOUS RESORCINOL-FORMALDEHYDE-LATEX DISPERSIONS, FIBERS WITH IMPROVED ADHESION, PROCESS FOR THEIR PREPARATION AND USE THEREOF.

摘要

Aqueous resorcinol-formaldehyde-latex dispersion comprises at least one carbodiimide compound (I). Aqueous resorcinol-formaldehyde-latex dispersion comprises at least one carbodiimide compound of formula (R11-(N=C=N-R) m-R22) (I). m : 1-500; R : 1-18C alkylene, 5-18C cycloalkylene, arylene and/or 7-12C aralkylene; R11 : R-NCO, R-NHCONHR1, R-NHCONR1R2, R-NHCOOR3 or R-NHCO-R5; R22 : -NCO, -NHCONHR1, -NHCONR1R2, -NHCO-R5 or -NHCOOR3; R1, R2 : 1-6C alkyl, 6-10C cycloalkyl or 7-12C aralkyl; R3 : R1, polyester, polyamide, (-(CH 2) l-(O-(CH 2) kO) g-R4), (-C 6H 4(OH)) or (-C 6H 3(OH)-((CH 2) h-C 6H 4(OH)) y); R5 : epoxide, phenol, oxime, resorcinol, polyethylene glycol and/or lactam, preferably caprolactam; l, k : 1-3; g : 0-12; h : 1-2; y : 1-50; and R4 : H or 1-4C alkyl. Independent claims are also included for: (1) preparing the aqueous resorcinol-formaldehyde-latex dispersion, comprising mixing (I) with the resorcinol-formaldehyde-latex dispersion; (2) an adhesive formulation comprising the aqueous resorcinol-formaldehyde-latex dispersion and additionally at least one activating agent; (3) improving the adhesion of reinforcing fibers with crosslinked rubber and/or elastomer, comprising introducing the fibers into the above adhesive formulation and drying, or treating the fibers in at least one step with at least one component of the above adhesive formulation, or introducing pre-activated fibers into the aqueous resorcinol-formaldehyde-latex dispersion and drying; and (4) adhesion improved fibers obtainable by contacting the fibers pretreated with activating agents, with the aqueous resorcinol-formaldehyde-latex dispersion, or by contacting a non-pretreated fiber with the adhesive formulation and drying at 180-260[deg] C..