HOT-MELT ADHESIVE BASED ON METALLOCENE CATALYSED OLEFIN/α-OLEFIN COPOLYMERS Russian patent published in 2014 - IPC C09J123/08 C08L23/08 

FIELD: chemistry.

SUBSTANCE: invention relates to hot-melt adhesives. The hot-melt adhesive contains 5-40 wt % of a copolymer based on ethylene and C₃-C₂₀ α-olefin, which is obtained by metallocene-catalysed polymerisation, 10-65 wt % of tackifying resin, 0-35 wt % of a plasticiser and 0.01-30 wt % of additives. The additives are selected from stabilisers, adhesion promoters, fillers or pigments, waxes and/or other polymers, wherein the total amounts to 100%. The copolymer is a block copolymer having invariable elastic properties in the range of 0°C to 25°C, measured as a ratio of the storage modulus E′ according to (E'_0C-E'_25C)/E'_25C<1.5.

EFFECT: method improves process properties of the hot-melt adhesive while preserving mechanical properties in the temperature range to 50°C.

18 cl, 5 ex