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:
Dec. 13, 2022
Filed:
Jul. 16, 2018
Covestro (Netherlands) B.v., Geleen, NL;
Gerardus Cornelis Overbeek, Echt, NL;
Alfred Jean Paul Bückmann, Echt, NL;
Patrick Johannes Maria Stals, Echt, NL;
Daan Van Der Zwaag, Echt, NL;
Jurgen Scheerder, Echt, NL;
Stella Josette Van Dijk, Echt, NL;
Covestro (Netherlands) B.V., Geleen, NL;
Abstract
The current invention relates to an one-pack aqueous coating composition comprising dispersed carbonyl functional vinyl polymer(s) particles, characterized in that the coating composition further comprises carbodihydrazide, whereby (i) the equivalent molar ratio of hydrazide groups to carbonyl groups is from 0.1 to 0.95, (ii) the ratio of number-average molecular weight of the carbonyl functional vinyl polymer(s) to acid value of the carbonyl functional vinyl polymer(s) is higher than 400, and (iii) the acid value of the carbonyl functional vinyl polymer(s) is from 2 to 100 mg KOH/gram carbonyl functional vinyl polymer.