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. 17, 2020
Filed:
May. 13, 2016
Basf SE, Ludwigshafen, DE;
Hermann Seyffer, Heidelberg, DE;
Carmen-Elena Cimpeanu, Ludwigshafen, DE;
Theo Smit, Heidelberg, DE;
Nico Veling, Heidelberg, DE;
Juergen Schmidt-Thuemmes, Neuhofen, DE;
Dirk Lawrenz, Hassloch, DE;
Rainer Blum, Limburgerhof, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The invention relates to a use of a coating layer on a paper substrate for blocking oxygen transfer through the coated paper substrate, wherein the coating layer on the paper substrate is obtainable by a process, which comprises the steps of (a) providing a paper substrate with a surface, (b) applying onto the surface of the provided paper substrate an aqueous coating mass, and (c) drying of the paper substrate with the applied aqueous coating mass to obtain the coated paper substrate, wherein the aqueous coating mass contains an aqueous dispersion of a polymer P, which is obtainable by radically initiated emulsion polymerization of at least 25 parts by weight of a C-Calkyl acrylate or a C-Calkyl methacrylate based on the sum total of the parts by weight of all monomers, which is always 100, in the presence of a first degraded starch. It relates further to a coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the polymer P and a further saccharide, which is added after the polymerization of the monomers. It relates also to a process for manufacturing the coated paper substrate obtainable with a coating mass comprising the aqueous dispersion of the polymer P and the further saccharide.