EPOXY BINDING AGENT FOR PREPREGS, PREPREG BASED ON IT, AND ARTICLE MADE THEREOF Russian patent published in 2008 - IPC C08L63/00 C08J5/24 B32B27/38 

FIELD: chemistry.

SUBSTANCE: binding agent includes components at the following ratio, weight parts: epoxy diane resin or its mix with diglycidyl diethyleneglycol ether 18-50, polyfunctional epoxy resin 18-60, bromine-containing epoxy diane resin 18-34, bis-N,N-(dimethylcarbamido)diphenylmetane as solidifier 3-6, alcohol and acetone mix as organic solvent 70-105. Bromine-containing epoxy diane resin is an oligomer product of tetrabromdiphenylolpropane and epychlorhydrine condensation in 600-1500 mol mass amount in the form of diglycidyl tetrabromdiphenylolpropane ether mix with its dimmer and trimer at the component ratio of (3-4):1:(0.2-0.8) or diglycidyl tetrabromdiphenylolpropane ether mix with its dimmer, trimer and chlorhydrine ether at the component ratio of (3-4):1:(0.2-0.8):(0.5-0.6). Prepreg includes components at the following ratio, wt %: epoxy binding agent described above 30.0-42.0, and fiber filler 58.0-70.0. An article is produced by prepreg modelling.

EFFECT: increased stability of binding agent solutions and improved durability properties of composition materials and articles made of them.

3 cl, 3 tbl, 4 ex