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:
Dec. 08, 1981
Filed:
Nov. 26, 1980
Applicant:
Inventors:
Friedrich Engelhardt, Frankfurt am Main, DE;
Karl Hintermeier, Frankfurt am Main, DE;
Herbert Friedrich, Heusenstamm, DE;
Thomas Martini, Bad Soden am Taunus, DE;
Assignee:
Cassella AG., Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09K / ;
U.S. Cl.
CPC ...
8584 ; 8529 ; 8648 ; 25230121 ; 25230128 ; 25230129 ; 25230135 ;
Abstract
The formulation for brightening synthetic fibers or mixtures of synthetic fibers and natural fibers, which is an aqueous dispersion comprising at least one finely divided optical brightener and a dispersing agent, wherein the improvement comprises the dispersing agent being a water-soluble or water-dispersible polyester containing at least one phosphonic acid ester moiety.