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:
Jan. 29, 1980
Filed:
May. 30, 1978
Applicant:
Inventors:
Peter Woditsch, Krefeld, DE;
Gunther Teichmann, Krefeld, DE;
Gunter Linde, Krefeld, DE;
Gunter Lailach, Krefeld, DE;
Fritz Rodi, Duisburg, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; C09C / ; C09C / ; C09C / ;
U.S. Cl.
CPC ...
106300 ; 106296 ; 106302 ; 106304 ; 106306 ; 1063 / ; 1063 / ; 1063 / ; 106309 ;
Abstract
In an aqueous fluid dispersible filler or pigment suspension containing a dispersion aid, the improvement which comprises employing as the dispersion aid about 0.01 to 1% by weight, based on solids, of a phosphonocarboxylic acid or a salt thereof. The pigment may be TiO.sub.2 and be present in from 30 to 80% concentration. The dispersion aid may be phosphonobutane-1, 2,4-tricarboxylic acid or a salt, and an amine or alkanolamine may also be present.