C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 1/02 (2006.01) B02C 23/06 (2006.01) C08K 3/26 (2006.01) C09C 3/10 (2006.01) C09D 7/02 (2006.01) D21H 17/63 (2006.01) D21H 17/64 (2006.01) D21H 17/69 (2006.01)
Patent
CA 2656527
The invention relates to the use of at least on polymer containing at least one monomer selected from acrylic acid or methacrylic acid or mixtures thereof and at least one monomer which is the maleic anhydride as a dispersing and/or grinding aid agent in a fabrication process of a dispersion and/or an aqueous suspension of mineral materials, wherein the molar ratio r (acrylic acid and/or methacrylic acid : (maleic anhydride) is strictly confined to the range between 2:1 and 0.1 : 1. Another object of the invention consists in the aqueous dispersions and suspensions of mineral materials thus produced and the use thereof in the fabrication of plastics, paper and paintworks.
L'invention consiste en l'utilisation dans un procédé de fabrication d'une dispersion et / ou d'une suspension aqueuse de matières minérales, comme agent de dispersion et / ou d'aide au broyage, d'au moins un polymère contenant au moins un monomère choisi parmi l'acide acrylique ou l'acide méthacrylique ou leurs mélanges et au moins un monomère qui est l'anhydride maléique, le ratio molaire r (acide acrylique et / ou méthacrylique) : (anhydride maléique) étant strictement compris entre 2:1 et 0,1 : 1. Un autre objet de l'invention réside dans les dispersions et les suspensions aqueuses de matières minérales ainsi fabriquées, et dans leurs utilisations dans la fabrication des plastiques, du papier et des peintures.
Egraz Jean-Bernard
Guerret Olivier
Jacquemet Christian
Mongoin Jacques
Suau Jean-Marc
Coatex S.a.s.
Robic
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