MIXTURE FOR APPLYING FILM FROM ALUMINIUM AND POLYETHYLENE TEREPHTHALATE BY HEAT SEALING ONTO CONTAINER MADE FROM POLYPROPYLENE, POLYVINYL CHLORIDE AND POLYSTYRENE Russian patent published in 2011 - IPC C08L23/00 C09D123/00 C09D133/06 C09D151/00 

FIELD: chemistry.

SUBSTANCE: system based on a film-forming dispersion contains the following in wt %: 5-60 copolyether A, obtained using itaconic acid or a mixture of polyesters; 5-70 (meth)acrylate homo- and/or -copolymer B. Copolymer B consists of more than 50 wt % monomers of formula where R₁ denotes hydrogen or methyl and R₂ denotes an alkyl residue, an alphatic or aromatic residue with 1-5 carbon atoms. The film-forming dispersion also contains 5-60 graft copolymer from polymer A and polymer B (polymer AB). Copolyether A has a straight or branched structure with OH number from 5 to 150 mg KOH/g, and acid number less than 10 mg KOH/g, and number-average molecular weight 700-25000 g/mol. Content of itaconic links in the copolyether per total content of polycarboxylic acids ranges from 0.1 mol. % to 20 mol. %.

EFFECT: invention enables to obtain well compatible polymer structures which do not contain styrene or derivatives thereof, based on a polyether graft polymethacrylate copolymer.

16 cl, 3 tbl, 5 ex