Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1995-01-23
1997-06-17
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510361, 510499, 525420, 525432, 528328, 5283291, 528342, 528363, C11D 337, C11D 320, C08G 6900, C08G 7300
Patent
active
056397232
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to reaction products of polybasic carboxylic acids and amino-containing compounds, which are obtainable by heating the mixture of (a) a polybasic carboxylic acid and (b) an amino-containing compound to at least 80.degree. C., processes for the preparation of the reaction products and the use of the reaction products as additives in low-phosphate and phosphate-free detergents and cleaning agents.
Polycondensates which contain aspartic acid as repeating units in condensed form are obtained by the thermal treatment of ammonium salts of fumaric acid, maleic acid or malic acid (cf. Ann. 75 (1850), 294 and Comp. Rend. 30 (1850), 324). Makromol. Chem., Makromol. Symp. 47 (1991), 345-355 discloses that the reaction of aldehydes with citric acid gives oxolactones, which are converted into the acyl dichlorides and subjected to polycondensation with benzyl ester of lysine to give polyamides. The benzyl esters in the aldehyde component are chemically bonded in the polyamide formed.
In U.S. Pat. No. 4,822,886, defined 5- and 6-membered N-hydroximides are used as novel complexing agents for iron(III) for detergents and cleaning agents, which can be prepared from citrates and hydroxylamine. Inevitably, these cyclic hydroximides form only when partially or completely esterified citric acid is used as a starting material. The reaction is carried out at room temperature. According to U.S. Pat. No. 5,093,040, the reaction products of dimethyl maleate and hexamethylenediamine are prepared at 70.degree. C. and further reacted with maleic anhydride and then with hydroxylamine. N-Hydroximide compounds and hydroxamic acids are formed. The reaction products are used in detergents.
U.S. Pat. No. 3,904,359 discloses treating textile materials post-wash with an aqueous solution of N-tallow-propylenediamine and citric acid at about 49.degree. C.
It is an object of the present invention to provide novel substances which are suitable for use in detergents and cleaning agents.
We have found that this object is achieved, according to the invention, by polymeric reaction products of polybasic carboxylic acids and amino-containing compounds, which are obtainable by heating a mixture of tartaric acid and alkylamines, amino acids, amino sugars, polyamines, aminonitriles, hydrazine, hydroxylamine and/or polyvinylamines 1:10.
The present invention furthermore relates to a process for the preparation of the reaction products, wherein a mixture of tartaric acid or the salts obtainable therefrom by partial or complete neutralization with alkali metal or alkaline earth metal base with alkylamines, amino acids, amino sugars, polyamines, aminonitriles, hydrazine, hydroxylamine and/or polyvinylamines 120.degree. C. Preferably used compounds of group (b) are ammonia, ammonium salts, alkylamines, amino acids, amino sugars, polyamines, aminonitriles, hydrazine, hydroxylamine and/or polyvinylamines.
The resulting polymeric and nonpolymeric reaction products are used as additives in low-phosphate and phosphate-free detergents and cleaning agents.
The mixtures which are reacted solely by heating contain, as component (a), citric acid, isocitric acid, aconitic acid, itaconic acid, tartaric acid or a mixture of the stated carboxylic acids. The stated carboxylic acids may be present in a form partially or completely neutralized with an alkali metal or alkaline earth metal base. Sodium hydroxide solution, potassium hydroxide solution, sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, calcium oxide, magnesium oxide, barium oxide or calcium hydroxide is preferably used as the base for neutralizing the carboxylic acid. If the stated carboxylic acids are partially neutralized, the degree of neutralization is from 0 to 70%. Citric acid is preferably used as a compound of component (a).
The starting materials of component (b) are amino-containing compounds which may be used in the form of the free bases or in partially or completely neutralized form. These compounds preferably contain primary and/or second
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Baur Richard
Boeckh Dieter
Hartmann Heinrich
Kroner Matthias
Kud Alexander
BASF - Aktiengesellschaft
Hertzog Ardith
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