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:
Feb. 10, 2026
Filed:
Apr. 23, 2020
Bostik SA, Colombes, FR;
Francis Pardal, Venette, FR;
David Penet, Venette, FR;
BOSTIK SA, Colombes, FR;
Abstract
A solvent-based two-component polyurethane-type adhesive composition comprises an —OH component and an —NCO component. The —OH component comprises an amorphous prepolymer including two —OH end groups, with a number-average molar mass Mof 8000 to 12,000 g and is chosen from: a) a copolyester (A1) obtained by a polycondensation reaction of at least one aliphatic diol (i) with at least one aromatic diacid (ii) and at least one aliphatic diacid (iii); and b) a polyurethane (A2) obtained by a polyaddition reaction between an aliphatic diisocyanate compound and an amorphous copolyester diol with a number-average molecular weight Mranging from 4000 to 11 500 g/mol. The —NCO component comprises a compound (B1) including three —NCO end groups, obtained by the reaction of meta-xylylene diisocyanate (m-XDI) with a triol, said compound (B1) being alone or as a mixture with a compound (B2) derived from an aliphatic diisocyanate.