The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2025
Filed:
Jul. 12, 2022
Akzo Nobel Coatings International B.v., Amsterdam, NL;
Shahin Akhlaghi, Amsterdam, NL;
Hendrica Petronella Maria Verlaan-Hooft, Amsterdam, NL;
Akzo Nobel Coatings International B.V., Amsterdam, NL;
Abstract
A one-component moisture-curing polyurethane adhesive composition is provided, comprising an isocyanate-functional prepolymer obtainable by reacting (a) one or more polyisocyanates comprising methyl diphenyl diisocyanate; and (b) a polyol mixture comprising (b1) a linear butylene oxide-based diol with two primary hydroxyl groups; and (b2) a polyether triol with three secondary hydroxyl groups wherein 55 to 75% of the hydroxyl groups in polyol mixture (b) are hydroxyl groups from butylene oxide-based diol (b1), wherein the equivalent ratio between isocyanate groups in (a) and hydroxyl groups in (b) is in the range of from 3.5 to 7.0, and wherein the content of free isocyanate groups in the adhesive composition is in the range of from 14 to 17 wt %. A method of bonding a first piece of material to a second piece of material using such adhesive composition, and an object made using the method, are also provided.