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.

Date of Patent:
Oct. 27, 2026

Filed:

Dec. 27, 2022
Applicant:

Lamberti Spa, Albizzate, IT;

Inventors:

Andrea Mascaro, Gallarate, IT;

Simona Esposito, Gallarate, IT;

Marco Ubbiali, Gorla Minore, IT;

Thierry Bossi, Azzio, IT;

Cristina Barcellona, Legnano, IT;

Assignee:

LAMBERTI SPA, Albizzate, IT;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/16 (2006.01); D21H 19/12 (2006.01); D21H 19/22 (2006.01); D21H 19/54 (2006.01); D21H 19/58 (2006.01);
U.S. Cl.
CPC ...
D21H 21/16 (2013.01); D21H 19/12 (2013.01); D21H 19/22 (2013.01); D21H 19/54 (2013.01); D21H 19/58 (2013.01);
Abstract

A method for improving the water and/or oil resistance of a paper substrate comprising: i) providing a paper substrate; ii) applying to the paper substrate a water-based barrier coating composition having a solids content from 10 to 55 wt % (% by weight) and comprising from 50 to 95 wt % of an aqueous polymer dispersion having a solids content from 20 to 50 wt % and obtained by emulsion polymerization of: a) from 0 to 40% by weight of at least one ethylenically unsaturated monomer selected among styrene or substituted styrene, b) from 15 to 55% by weight of at least one ethylenically unsaturated monomer selected among C-C-alkyl (meth)acrylates or cycloalkyl (meth)acrylates, in the absence of ethylenically unsaturated acid monomers and in the presence of c) from 45 to 80% by weight of degraded starch having a molecular weight Mn of 500 to 30,000 Da.


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Mascaro, Andrea. (2026). Method for improving the barrier properties of a paper substrate (U.S. Patent No. 12774565). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774565

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