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:
Aug. 05, 2025
Filed:
Jan. 21, 2021
Covestro (Netherlands) B.v., Geleen, NL;
Gerardus Cornelis Overbeek, Geleen, NL;
Patrick Johannes Maria Stals, Geleen, NL;
Daan Van Der Zwaag, Geleen, NL;
Alfred Jean Paul Bückmann, Geleen, NL;
Jan Van Riel, Geleen, NL;
Stella Josette Van Dijk, Geleen, NL;
Kristel De Vos-Verschuren, Geleen, NL;
Hermanus Adrianus Langermans, Geleen, NL;
Covestro (Netherlands) B.V., Geleen, NL;
Abstract
The present invention relates to a multi-aziridine crosslinker composition, including an aqueous dispersion having a pH ranging from 9 to 14 and including a multi-aziridine compound in dispersed form. The multi-aziridine compound has: a. from 2 to 6 of the following structural units A: (A) whereby R1, R2, R3 and R4 are H; m is 1, R′ and R″ are according to (1) or (2): (2) R′=H or an aliphatic hydrocarbon group containing from 1 to 14 carbon atoms, and R″=an alkyl group containing from 1 to 4 carbon atoms, CH2-O—(C═O)—R′″ or CH2-O—R″″, whereby R′″ is an alkyl group containing from 4 to 12 carbon atoms and R″″ is an alkyl group containing from 1 to 14 carbon atoms, (2) R′ and R″ form together a saturated cycloaliphatic hydrocarbon group containing from 5 to 8 carbon atoms.