Mixtures of polyamino acids and citrate

Details Mixtures of polyamino acids and citrate Mixtures of polyamino acids and citrate

1993-09-10

1995-02-14

Lieberman, Paul

Compositions

Fluent dielectric

N-containing

252546, 25217423, 25217424, 25217419, C11D 110, C11D 333, C11D 320

Patent

active

053893034

ABSTRACT:
Polyamino acids or their salts mixed with citric acid or its salts, in a ratio of 75:25 to 0.1:99.9, polyamino acid or its salt to citric acid or its salts, and especially in a ratio of 1:1 to 1:99 polyamino acids or their salts to citric acid or its salts, provide a much higher rate of chelation of calcium ion than expected on the basis of the addition of the polyamino acid to citric acid. Such mixtures may be used in high volume water applications such as boiler, cooling, oil well, agricultural sprays and irrigation water. They are also useful in preventing scale formation on fabrics when formulated with laundry detergents and in preventing scale formation on glassware when formulated in dishwashing detergents.

REFERENCES:
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Chem. Abs. vol. 79, 55246w, 1973, Fujimoto et al. Poly(amino acids) as surfactants in detergents and cosmetics. GB A:1404814. (May 10, 1973).
Chem Abs. vol. 109: 57112m Yaguchi et al. Surfactant compositions with mildness towards skin. DE 3,724,460. (Feb. 4, 1988).

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