LIQUID BINDER COMPOSITION FOR BINDING FIBER MATERIAL Russian patent published in 2017 - IPC C08L63/00 C08L81/06 C08J5/04 B32B27/12 D06M15/55 

FIELD: chemistry.

SUBSTANCE: invention relates to a liquid binder composition for the fibrous compound materials to a fiber-reinforced polymeric composite materials, which are used for manufacturing resin impregnated preform. The liquid binder composition is an aqueous dispersion, which contains (a) one or more multifunctional epoxy resins, (b) polyarylsulfonic polymer, (c) nonionic surfactants, (d) water. Substantially, the organic solvents are absent in the liquid composition. Polyarylsulfonic polymer is comprised by repeating units having ether linkages, and optionally having a thioether bonds. The nonionic surfactant is a monofunctional or multifunctional block of grafted block copolymer containing hydrophilic and hydrophobic blocks. The resin-impregnated blank comprises the unity of fibrous materials. Fibrous materials are held together by liquid binder composition. Fibrous materials containing the liquid binder composition, comprise woven or non-woven fibers, nonwoven fibers randomly deposited fibers, tows, yarns, cords, textile ribbons as fibrous materials.

EFFECT: improved properties.

15 cl, 1 dwg, 5 tbl, 2 ex