MULTILAYER COMPOSITE MATERIAL CONTAINING EVS LAYER AND PROTECTIVE LAYER Russian patent published in 2010 - IPC B32B27/08 

FIELD: chemistry.

SUBSTANCE: multilayer composite material has an inner layer (I) selected from a fluoropolymer moulding compound and polyolefin moulding compound, an adhesive layer (II) of the following composition: a) from 0 to 80 pts. wt polyamine-polyamide graft copolymer, b) from 0 to 100 pts. wt polyamide, c) from 0 to 85 pts. wt of a polymer selected from fluoropolymers and polyolefins, where the sum of pts. wt of a), b) and c) equals 100, and in addition to this, in the sum of components a) and b) at least 20 pts. wt constitutes monomer links originating from caprolactam and/or a combination of hexamethylenediamine/adipinic acid, hexamethylene diamine/-suberic acid, hexamethylene diamine/sebacic acid, hexamethylene diamine/dodecane dicarboxylic acid, hexamethylene diamine/isophthalic acid or hexamethylene diamine/terephthalic acid; d) not more than 50 pts. wt additives selected from reinforced rubber and/or traditional additive materials or filler; a layer (III) made from EVS moulding compound.

EFFECT: increased reliability of joints between layers.

16 cl, 5 ex, 1 tbl