HOT-MELT ADHESIVE COMPOSITIONS AND USE THEREOF Russian patent published in 2019 - IPC C09J167/00 C09J123/02 C09J123/08 C09J191/06 C09J5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to versions of an environmentally safe hot-melt adhesive from renewable raw materials, as well as to an article using said glue and a method of producing said article. In one version, the hot-melt adhesive contains (a) a polyester resin; (b) a functionalised polyolefin or functionalised wax, (c) a tackifier and (d) a non-functionalised polyolefin having a homopolymer of monomer C₂-C₂₀ or copolymer C₂-C₂₀. This hot-melt adhesive as a polyester resin contains a homopolymer or copolymer of lactic acid, butylene succinate, hydroxybutyric acid or their mixture. In another version, the hot-melt adhesive contains from about 5–80 wt. % polylactic acid, from about 0.1–25.0 wt. % functionalised polyolefin or functionalised wax, a tackifier and up to about 50 wt. % polyolefin containing C₂-C₂₀-Monomers. Viscosity of said adhesive is less than 30 % after aging of adhesive for at least 72 hours at 320 °F (160 °C). Glue practically does not contain rubber elastomer. Produced article comprises a substrate and a hot-melt adhesive composition. Article represents a box, a cardboard box, a tray, a label, a book binding, a bag or a disposable article. Article is obtained by applying the adhesive onto the substrate, by applying the second substrate onto the applied adhesive.

EFFECT: invention enables to obtain hot-melt adhesives which have the same operational characteristics as conventional hot-melt adhesives made from oil-based starting materials.

9 cl, 4 tbl