FIELD: polymer production.
SUBSTANCE: ethylene-butene copolymers used in hot melt compositions. Proposed ethylene-butene copolymer of ultra-low viscosity from 6,000 to 20,000 cP, which has a density of 0.874 to 0.900 g/cm3, melting point from 63 to 90°C, weight average molecular weight from 15,000 to 30,000 g/mol, number average molecular weight up to 20,000 g/mol and a butene content of 10 to 28 wt.%, and a hot melt adhesive composition comprising the proposed copolymer, a tackifier and a wax.
EFFECT: improved cohesiveness and adhesive strength of a composition for hot-melt adhesive, including an ultra-low viscosity ethylene-butene copolymer, by lowering the processing temperature and improving the thermal stability of the ethylene-butene copolymer.
10 cl, 3 tbl, 12 ex
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