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. 29, 2023
Filed:
Dec. 20, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Stephan Weinkoetz, Ludwigshafen, DE;
Dieter Weilacher, Ludwigshafen, DE;
Guenter Scherr, Ludwigshafen, DE;
Jens Steinbeck, Ludwigshafen, DE;
Evelyn Fuchs, Ludwigshafen, DE;
Ralf Strohmeier, Ludwigshafen, DE;
Daniel Flojhar, Ludwigshafen, DE;
BASF SE, , DE;
Abstract
The present invention relates to a process for preparing liquid compositions of etherified melamine formaldehyde resins, namely melamine formaldehyde resins etherified with a primary C-C-alkanol, which have low formaldehyde contents. The invention also relates to such liquid compositions of etherified melamine formaldehyde resins having a content of free formaldehyde of less than 0.3% by weight. The liquid compositions of etherified melamine formaldehyde resins are useful as crosslinking agents in coating compositions.