TWO-COMPONENT ADHESIVE COMPOSITIONS WHICH DO NOT CONTAIN A SOLVENT, AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2021 - IPC C09J175/04 C08G18/10 

FIELD: adhesive materials.

SUBSTANCE: invention relates to two-component adhesive compositions which do not contain a solvent for use in laminar films. Adhesive composition contains: at least one isocyanate prepolymer, which is a reaction product of reagents, comprising at least one isocyanate, at least one polyol and a branched alkanediol; and a polyol component containing at least one polyol and a branched alkanediol, wherein weight ratio of isocyanate component to polyol component ranges from 100:100 to 100:30. Branched alkanediol contains a main alkyl chain containing from 3 to 10 carbon atoms, and one branched alkyl chain containing from 1 to 6 carbon atoms. In addition, described is a method of producing a laminate, comprising preparing an adhesive composition which does not contain a solvent, which contains a branched alkanediol, applying said adhesive composition on the surface of the film, bringing said layer into contact with the surface of the other film to obtain a laminate, and curing adhesive composition.

EFFECT: invention improves chemical resistance, strength of thermal weld and strength of gluing.

8 cl, 5 tbl