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:
Jun. 21, 1977
Filed:
Mar. 02, 1976
Applicant:
Inventors:
Wilhelm Vogt, Hurth-Efferen, DT;
Eberhard Auer, Erftstadt Liblar, DT;
Gunter Lenz, Frachen-Bachem, DT;
Karl Merkenich, Hurth-Efferen, DT;
Klaus Henning, Hurth-Hermulheim, DT;
Joachim Kandler, Erftstadt Lechenich, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ;
U.S. Cl.
CPC ...
252 / ; 252135 ; 252526 ; 252527 ; 252531 ; 252539 ; 252545 ; 252546 ; 252550 ; 252558 ;
Abstract
Builders for detergent and cleaning compositions. The builders comprise copolymers made from .alpha.-hydroxyacrylic acid and acrylic acid. The copolymers contain between 9 and 85 mol % of acrylic acid and have a relative viscosity within the range 0.05 and 1.0, determined on a 1 weight % solution of the copolymers in aqueous 2N-sodium hydroxide solution, at 20.degree. C.