Washing agent compositions and washing assistant composition con

Details Washing agent compositions and washing assistant composition con Washing agent compositions and washing assistant composition con

1973-11-21

1976-06-22

Herbert, Jr., Thomas J.

Compositions

Electrolytes for electrical devices

252 89R, 252135, 252545, 252546, 252DIG1, 252DIG11, 252DIG17, C11D 3395

Patent

active

039650243

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.

REFERENCES:
patent: 3400148 (1968-09-01), Quimby
patent: 3451937 (1969-06-01), Quimby
patent: 3562166 (1971-02-01), Nicholson et al.
patent: 3562169 (1971-02-01), Prentice

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