Two-component solventless adhesive compositions and methods of making same

• Main Authors: SHI, RUI, QU, ZHAO-HUI
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

A solventless adhesive is disclosed, the adhesive comprising an isocyanate component comprising at least one isocyanate prepolymer that is the reaction product of reactants comprising at least one isocyanate, at least one polyol, and a branched alkane diol, and a polyol component comprising at least one polyol and a branched alkane diol. The branched alkane diol can comprise a single side alkyl chain, such as 3-methyl-1, 5-pentanediol, 2-methyl-1,3-propanediol, and combinations thereof. Further, a method for forming a laminate is disclosed, the method comprising forming a solventless adhesive composition comprising a branched alkane diol, applying a layer of the adhesive composition to a surface of a film, bringing the layer into contact with a surface of another film to form a laminate, and curing the adhesive composition. Still further, a laminate formed by the method is disclosed.