公开(公告)号：US20220403219A1

公开(公告)日：2022-12-22

申请号：US17776454

申请日：2020-11-13

Applicant: BASF SE

Inventor： Sirus Zarbakhsh ,  Stefan Bokern ,  Martin Linnebrink ,  Xuyuan Peng-Poehler

IPC: C09J175/08 ,  C09J5/06 ,  C08G18/76 ,  C08G18/12 ,  C08G18/42 ,  C08G18/48 ,  C08G18/62 ,  C08G18/40 ,  C08G18/30

Abstract: Described herein is a moisture-curing polyurethane hot-melt adhesive including at least 80% by weight, based on a total weight of the moisture-curing polyurethane hot-melt adhesive, of isocyanate-terminated prepolymer obtainable by mixing diisocyanate (a) with compounds having at least two isocyanate-reactive groups (b) and reacting the mixture to form the isocyanate-terminated prepolymer, where the compounds having at least two isocyanate-reactive groups (b) include at least one polylactide (b1) obtainable by reacting lactide with a linear difunctional starter molecule having 2 to 20 carbon atoms and the isocyanate content of the isocyanate-terminated prepolymer is 1 to 5% by weight. Also described herein is a process for producing such a moisture-curing polyurethane hot-melt adhesive and a method of using the moisture-curing polyurethane hot-melt adhesive in bonding of substrates.