Patent GB-772454-A (GB)
Title: A process for producing dispersing agents from polyalkylene oxide waxes
IPC: C09K23/00
Filed: 1954-06-23
Abstract: Dispersing agents are produced by condensing a carboxylic acid with a basicity of 3 or more or a functional derivative thereof with a polyalkylene oxide wax and simultaneously or subsequently with an hydroxyl compound containing at least 6 carbon atoms or a corresponding body containing an NH2, SH, CONH2 or SO2NH2 group in place of hydroxyl.  Suitable carboxylic acids are citric acid, aconitic acid, diadipic acid, 1,2,3,4 - butanetetracarboxylic acid, trimeric acid, mellitic acid, nitrilo-triacetic acid, an oleic acid-maleic anhydride adduct and ethylenedinitrilo-tetra-acetic acid. Derivatives mentioned are halides, esters or anhydrides.  Suitable hydroxyl compounds are alcohols with at least 6 carbon atoms, naphthene alcohols, resin alcohols, cyclohexyl alcohol, alkylated cyclohexyl alcohol, alkylphenols or alkylnaphthols (alkyl residues C3-C18).  The process may consist of heating in vacuo up to 180 DEG C.  Esterification catalysts, e.g. toluene sulphonic acid and inert solvents, e.g. benzene, may be present. The products may be used for dispersing a great variety of materials, especially for making saliferous dispersions of synthetic resins, starch, cellulose derivatives or fatty substances, e.g. for impregnating textiles or wood or for tanning. In the examples dispersing agents are prepared from (1) polyethylene oxide wax, citric acid and octadecyl alcohol; (2) oxide wax, nitrilo-triacetic acid and octadecyl alcohol; (4) polyethylene oxide wax, diadipic acid and an alkylsulphamide with alkyl residues C12-C16.  This product is used to prepare a paste from spindle oil and olein sulphonate; (5) polyethylene oxide wax, an adduct from oleic acid and maleic anhydride and octadecyl alcohol. In Example (3) the product of Example (1) is used to prepare a paste from spindle oil and olein sulphonate.  This paste forms a dispersion of tanning salts.  In Example (6), the product of Example (5) is dissolved in neutralized sulphonated fish oil and the product used to produce stable tanning emulsions, e.g. with sodium chloride, basic chrome tanning salt and fat.ALSO:Dispersing agents are produced by condensing a carboxylic acid with a basicity of 3 or more or a functional derivative thereof with a polyalkylene oxide wax and simultaneously or subsequently with a hydroxyl compound containing at least 6 carbon atoms or a corresponding body containing a NH2, SH, CONH2 or SO2NH2 group in place of the hydroxyl.  Carboxylic acids exemplified are citric acid, aconite acid, diadipic acid an adduct from oleic acid and maleic anhydride, 1, 2, 3, 4 - butane tetra-carboxylic acid, trimesic acid, mellitic acid, nitrillo-triacetic acid, ethylenedinitrilo - tetra - acetic acid. Derivatives mentioned are halides, esters and anhydrides.  Hydroxyl compounds exemplified are alcohols with at least 6 carbon atoms, naphthene alcohols, resin alcohols, cyclohexyl alcohols, alkylated cyclohexyl alcohol, alkylphenols or alkylnaphthols (alkyl residues C3 - C18).  Substances exemplified are mineral, or resins, natural or synthetic rubber, albumenous substances, synthetic high molecular weight polymer compounds such as polyvinyl compounds, polyesters, polyamides, inorganic or organic pigments, animal, vegetable or synthetic oils, fats and waxes, natural or synthetic resin oils starch, cellulose derivatives and fatty substances.