MIXTURE FOR MANUFACTURING PREPREGS AND COMPOSITE MATERIALS, PREPREGS AND RELATED PRINTED-CIRCUIT CARDS Russian patent published in 1998 - IPC

FIELD: polymer materials. SUBSTANCE: mixture is a phosphorus-modified epoxide resin prepared by interaction of epoxide resin with reagent selected from the group including phosphinic acids, phosphonic acids, pyrophosphonic acids, and phosphonic acid partial esters in presence of an aromatic polyamine as hardener. The latter is prepared by trimerization of alkylbenzene-2,6-diisocyanate followed by hydrolysis. Mixture may further contain hardening accelerator, other epoxide resins and hardeners Ц aromatic and/or heterocyclic polyamines. Mixture is fit to manufacture reinforced prepregs and laminates for layered technics, which, with no halogens added, give hard-flammable molding materials with vitrification temperature as high as possible (≥ 180 C). EFFECT: improved inter-layer adhesion in laminates and adhesion of material for copper. 10 cl