GB1012418A - A process for the preparation of water-soluble surface-active phosphorus-containing products - Google Patents

Abstract

Detergent compositions comprise the product obtained by phosphating a mixture of (a) a water soluble or dispersible condensate of at least 1 mol. of C2 to C4 alkylene oxide with 1 mol. of a reactive hydrogen containing compound of at least C6; and (b) a C1 to C12 organic compound having one or more -OH, amino, or amide groups, but no alkyleneoxy groups, dissolved in water together with various builders. Suitable reactive hydrogen containing compounds are phenols, alcohols, primary and secondary amines, carboxylic and sulphonic acids, and amides thereof; preferred compounds of group (b) are aliphatic and cycloaliphatic alcohols. The phosphated products may be neutralized, e.g. by NaOH. The builders specified are: sodium tripolyphosphate, potassium pyrophosphate, sodium metasilicate, sodium EDTA, and carboxymethyl cellulose, and they may be added to the phosphorus containing products in large amounts, e.g. three parts by weight of builder : 1 part phosphorus compound. Additional alkylene oxide adducts (e.g. ethylene oxide/alkyl phenols) may be dissolved in the composition. Examples include a composition containing, in aqueous solution 60% by weight of sodium metasilicate, 5% by weight of 15-etho-nonyl phenol, with 20% by weight of the phosphated product of a mixture of 6-etho-nonyl phenol (1 mol.), and octanol (1 mol.). U.S.A. Specification 2,674,619 is referred to.ALSO:Phosphated surface-active agents are prepared by phosphating a mixture comprising: (a) a water-soluble or dispersible condensate of at least 1 mol. of C2 to C4 alkylene oxide with 1 mol. of a reactive hydrogen containing compound of at least C6; and (b) a C1 to C12 organic compound having one or more -OH, amino, or amide groups, but no alkyleneoxy groups. Specific phosphating agents are P2O5, PCl3, PCl5, POCl3, or phosphoric acid, or a mixture thereof. Mole ratios of (a) to (b) may vary from 0.5 to 2.0 : 0.5 to 4.0, and a mixture of (a) and (b) within the upper limits of this ratio is suitably reacted with up to 1 mole of P2O5 or up to 2 moles of the other phosphating agents having only 1 phosphorus atom/molecule. Suitable active hydrogen containing compounds are phenols, alcohols, primary and secondary amines, carboxylic and sulphonic acids, and their amides. Preferred compounds of group (b) are aliphatic or cycloaliphatic alcohols (e.g. butanol, octanol, cyclohexanol, methylcyclohexanol). The reaction is suitably performed by gradual addition of the phosphating agent to the mixture of (a) and (b), an appropriate temperature of 95-110 DEG C. being maintained, with cooling if needed. The products may be neutralized with NaOH, and admixed with large proportions of builders to enhance detergent properties (see Division C5), and effect water softening and solubilization of other materials such as alkylene oxide adducts. Examples are given for the preparation of phosphated products from nonyl phenols condensed with six, eight, ten, and twelve molecules of ethylene oxide, and the adducts of six and five molecules of ethylene oxide respectively with tridecyl alcohol and lauryl alcohol, using various alcohols as component (b). An example for a composition with a builder and an alkylene oxide adduct is also given.ALSO:Phosphated surface active agents are prepared by phosphating a mixture comprising: (a) a water soluble or dispersible condensation product of at least 1 mole of C2 to C4 alkylene oxide and 1 mole of a reactive hydrogen containing compound of at least C6, and (b) a C1 to C12 organic compound containing one or more -OH, amino or amide groups, but having no alkyleneoxy groups, with P2O5, PCl3, POCl3 PCl5, or phosphoric acid, or a mixture thereof. Mole ratios of (a) to (b) may vary from 0.5 to 2.0: 0.5 to 4, and a mixture of (a) and (b) within the upper limits of this ratio is suitably reacted with up to 1 mole of P2O5 or up to 2 moles of the other phosphating agents, having only 1 phosphorus atom/molecule. Suitable active hydrogen containing compounds are phenols, alcohols, primary or secondary amines, carboxylic or sulphonic acids, and their amides. Preferred compounds of group (b) are aliphatic cycloaliphatic alcohols (e.g. butanol, octanol, cyclohexanol, and methyl cyclohexanol). The reaction may be performed by gradual addition of the phosphating agent to the mixture of (a) and (b) an appropriate temperature of 95-110 DEG C. being maintained, if necessary with cooling. The products may be neutralized, e.g. with NaOH, and may be admixed with large amounts (e.g. up to 3 parts by weight) of builders to form detergent compositions (see Division C5). Examples are given for preparation of phosphated products from nonyl phenols condensed with six, eight, ten and twelve molecules of ethylene oxide, and the adducts of six and five molecules of ethylene oxide with respectively tridecyl alcohol and lauryl alcohol, using various alcohols as component (b). Specification U.S.A. 2,674,619 is referred to.