Patent GB-918430-A (GB)
Title: Phosphate esters of surface active agents
IPC: C07F9/09
Filed: 1960-11-07
Abstract: Detergent compositions comprise phosphate esters (substantially primary and secondary phosphates only) prepared by reacting one mole of P2O5 with 2 to 4,5 moles of a nonionic surface-active agent having the molecular configuration of a condensation product of at least one mole of an alkylene oxide of 2 to 4 carbon atoms with one mole of a compound containing at least 6 carbon atoms and a reactive hydrogen atom under substantially anhydrous conditions and at a temperature below 110 DEG C.  Suitable reactive hydrogen compounds include alcohols, phenols, thiols, primary or secondary amines, carboxylic acids, carboxylic amides, sulphonic acids, sulphonamides and rosin derivatives, very many being specified.  The products generally contain about 20-45% secondary ester, 30-80% primary ester and 0-40% unchanged surface-active agent.  The products may be converted to salts, e.g. with metals, ammonia or amines.  The compositions may contain conventional alkaline substances, builders, soaps, suspending agents, brighteners or stabilizers. A specific liquid composition comprises a P2O5 reaction product of C4H9-C6H4-(OC2H4)6OH, tetrapotassium pyrophosphate, sodium silicate, and carboxymethylcellulose adjusted to a pH of about 12 with KOH. Specifications 380,431, 380,851, 470,181 and 479,835 are referred to.ALSO:Phosphate esters (substantially primary and secondary phosphates only) are prepared by reacting one mole of P2O5 with 2 to 4,5 moles of a non-ionic surface active agent having the molecular configuration of a condensation product of at least one mole of an alkylene oxide of 2 to 4 carbon atoms with one mole of a compound containing at least 6 carbon atoms and a reactive hydrogen atom under substantially anhydrous conditions and at a temperature below about 110 DEG C.  Suitable reactive hydrogen compounds include alcohols, phenols, thiols, primary or secondary amines, carboxylic acids, carboxylic amides, sulphonic acids and sulphonic amides, very many being specified. The polymers have molecular weights up to 15,000 and may be derived from a mixture of alkylene oxides.  The products generally contain about 20-45% secondary ester, 30-80% primary ester and 0-40% unchanged surface active agent.  The products may be converted to salts, e.g. with metals, ammonia or amines.  A solvent may be used and the reaction is preferably effected in the presence of hyphosphorous acid or a salt thereof or of phosphorous acid or a salt or ester thereof; suitable salts include metal, ammonium and amine salts.  Specifications 380,431, 380,851, 470,181 and 479,835 are referred to.ALSO:Phosphate esters (substantially primary and secondary phosphates only) are prepared by reacting one mole of P2O5 with 2 to 4.5 moles of a nonionic surface active agent having the molecular configuration of a condensation product of at least one mole of an alkylene oxide of 2 to 4 carbon atoms with one mole of a compound containing at least 6 carbon atoms and a reactive hydrogen atom under substantially anhydrous conditions and at a temperature below about 110 DEG C.  Suitable reactive hydrogen compounds include alcohols, phenols, thiols, primary or secondary amines, carboxylic acids, carboxylic amides, sulphonic acids and sulphonic amides, very many being specified.  The products generally contain about 20 - 45% secondary ester, 30 - 80% primary ester and 0-40% unchanged surface active agent.  The products may be converted to salts with metals, ammonia or amines. A solvent may be used and the reaction is preferably effected in the presence of phosphorous acid or a salt thereof or of phosphorous acid or a salt or ester thereof; suitable salts include metal, ammonium and amine salts.  Specifications 380,431, 380,851, 470,181 and 479,835 are referred to.