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. 22, 1976
Filed:
Nov. 21, 1973
Edmund Schmadel, Mettman, DT;
Gunter Jakobi, Hilden, DT;
Karl-Heinz Worms, Dusseldorf-Holthausen, DT;
Helmut Blum, Dusseldorf-Holthausen, DT;
Henkel & Cie G.m.b.H., Dusseldorf-Holthausen, DT;
Abstract
Washing agent compositions and washing assistant compositions containing from 0.5% to 70% by weight of a phosphonopolycarboxylate having the formula ##EQU1## WHEREIN Me is H, alkali metal, or H.NR.sub.3, R.sub.1 is H or CH.sub.3, R.sub.2 is H, alkyl having 1 to 4 carbon atoms or --CH.sub.2 --CHR--COOMe, R.sub.3 is H, alkyl or alkylol having 1 to 6 carbon atoms, and X is a direct bond or the groups ##EQU2## from 0 to 96.5% of other sequestering and non-sequestering, preferably phosphorus-free builders, and from 3% to 45% by weight of at least one surface-active compound of an anionic or non-ionic nature, whereby a 1% aqueous solution thereof has a pH of between 6 and 11.5. Preferably said phosphonopolycarboxylate sequestering agents are present as water-soluble salts capable of complex formation with alkaline earth metal ions. The invention also resides in the process of sequestering alkaline earth metal ions using aqueous solutions of the washing agent composition.