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:
Sep. 24, 2024
Filed:
Nov. 07, 2019
Applicant:
Saint-gobain Placo, Courbevoie, FR;
Inventors:
Kirsty Walton, Coventry, GB;
Nicholas Jones, Coventry, GB;
David Cutler, Coventry, GB;
Nicola Jupp, Coventry, GB;
Laura Brooks, Coventry, GB;
Assignee:
Saint-Gobain Placo, Courbevoie, FR;
Primary Examiner:
Int. Cl.
CPC ...
C04B 16/04 (2006.01); B28C 5/40 (2006.01); C04B 14/42 (2006.01); C04B 20/10 (2006.01); C04B 28/14 (2006.01); B28B 19/00 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 16/04 (2013.01); B28C 5/402 (2013.01); B28C 5/406 (2013.01); C04B 14/42 (2013.01); C04B 20/1033 (2013.01); C04B 28/14 (2013.01); B28B 19/0092 (2013.01); C04B 2111/00629 (2013.01);
Abstract
A method of preparing a gypsum-based product comprises the steps of mixing calcined gypsum with polymer particles and water to provide a slurry. The polymer particles comprise principally polyvinyl acetate, and have a particle size distribution, measured using laser diffractometry, such that particles having a diameter of 4.5 μm or less provide at least 90% of the total particle volume.