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:
Jul. 09, 1996
Filed:
Feb. 06, 1995
Jean-Bernard Egraz, Ecully, FR;
Jacques Mongoin, Champagne-Au-Mont-d'or, FR;
Georges Ravet, Saint-Genis-les-Ollieres, FR;
Coatex S.A., Genay, FR;
Abstract
A grinding agent containing polymers and/or copolymers partially neutralized by magnesium, for aqueous suspensions of mineral substances to be used in pigmentary applications is disclosed. A grinding agent composed of polymers and/or copolymers obtained by polymerization and/or copolymerization of acrylic and/or vinyl monomers containing acid groups, and in which the active acid sites are completely or partially neutralized to a degree of 40% to 60%, including terminals, using a neutralizing agent containing magnesium ions, and to a degree of up to 60% using a neutralizing agent containing monovalent ions is disclosed. A procedure for grinding in an aqueous suspension using said agent, as well as the aqueous suspensions produced using said procedure and their applications to the fields of weight fillers, paper coating, paints, and plastics is also disclosed.