MULTILAYER MATERIAL Russian patent published in 2004 - IPC

FIELD: light industry, in particular, production of multilayer leather-type materials for manufacture of wide range of fancy goods. SUBSTANCE: multilayer material comprises face layer made in the form of textile base having surface density of 100-350 g/sq.m and composed of cotton filaments or mixture of cotton and polyamide filaments used in the ratio of 33:67, respectively, or viscose filaments or mixture of viscose and polyester filaments used in the ratio of 33:67, respectively, or mixture of viscose, polyester and polyamide filaments used in the ratio of 35:35:30, respectively, or linen filaments, or mixture of linen, viscose and polyester filaments used in the ratio of 20: 30: 50, respectively, and single-layer reverse side polymeric covering embedded into textile base through depth of 0.10-0.25 mm. Polymeric covering composition comprises, weight parts: polyvinyl chloride emulsion 100.0; plasticizer: Di-(2-ethylhexyl) phthalate 60.0-65.0; barium-zinc-potassium complex stabilizer Vigostab 3.0-4.0; separated chalk 0.1-10. Covering overweight is 90-120 g/sq. m. Multilayer material may comprise polymeric covering of the following composition, weight parts: polyvinyl chloride suspension 80.0; polyvinyl chloride emulsion 20.0; plasticizer: Di-(2-ethylhexyl) phthalate 60.0- 65.0; barium-zinc-potassium complex stabilizer Vigostab 1.5-2.0; stearic acid 0.5-1.0; filler: separated chalk 0.1- 15.0. Covering overweight is 90-120 g/sq.m. Polyurethane covering may be used as alternative covering, with polyurethane covering composition comprising, weight parts: polyurethane solution Vitur 100.0; pigmentary pastes 0.1-5.0; dimethyl formamide 2.0-6.0. Covering overweight is 60.0-100 g/sq. m. Material may comprise acrylic dispersions as covering composition including following components, weight parts: acrylic dispersion Lacryl Э-61 100.0; acrylic dispersion Э-41 2.0-5.0; aqueous solution of ammonia 1.0-4.0. Covering overweight is 70.0-100.0 g/sq.m. EFFECT: improved quality of multilayer material owing to reduced weight and rigidity and increased adhesion between polymeric covering and textile base. 5 cl, 8 tbl, 98 ex