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. 21, 1992
Filed:
Mar. 16, 1990
Applicant:
Inventors:
Alfred Oftring, Bad Duerkheim, DE;
Stefan Birnbach, Ludwigshafen, DE;
Richard Baur, Mutterstadt, DE;
Charalampos Gousetis, Ludwigshafen, DE;
Wolfgang Trieselt, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F / ; C02F / ; C11D / ;
U.S. Cl.
CPC ...
252546 ; 252180 ; 252D / ; 252178 ; 252 81 ; 562568 ;
Abstract
2-Methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives thereof of the general formula I ##STR1## in which X denotes hydrogen, alkali metal or ammonium which may or may not be substituted by C.sub.1 -C.sub.4 -hydroxyalkyl groups and Z denotes hydrogen or hydroxyl. The compounds I serve as complexing agents for heavy metal ions or alkaline earth metal ions and as bleach stabilizers or builders in detergents and cleaning formulations.