Patent GB-404684-A (GB)
Title: A process for the production of mineral acid esters of glucosides
IPC: C07H15/06
Filed: 1932-07-07
Abstract: Mineral acid esters of glucosides, which are stated to be dispersing agents, are obtained by the action of strong oxygen and phosphorus containing mineral acids or their anhydrides or halides on mono- or di-saccharides and alcohols or their substitution products.  The formation of the glucoside and its esterification thus takes place simultaneously.  In an example, dextrose is warmed with a mixture of phosphoric acid, phosphorus pentoxide and lauryl alcohol and the product separated from aqueous acid by the addition of butyl alcohol or other solvent, e.g. pyridine or methylcyclohexanol.  The resulting paste obtained by neutralisation may be dried, e.g. by means of an atomiser; or the product may be worked up by neutralising without first separating the aqueous acid.  The production of glucoside esters from glucose, ricinoleic acid and phosphoric acid and from milk sugar, lauryl alcohol and phosphoric acid is also described. Cycloaliphatic and aromatic alcohols and amino, chlor and carboxy derivatives of alcohols are mentioned as starting materials.  The products may be neutralised with alkalies, ammonia or organic bases. The Specification as open to inspection under Sect. 91 comprises also the production of any mineral acid ester, other than a sulphuric acid ester, of glucosides which are derived from sugars or carbohydrates and alcohols or phenols.  This subject-matter does not appear in the Specification as accepted.ALSO:Mineral acid esters of glucosides are obtained by the action of strong oxygen and phosphorus containing mineral acids or their anhydrides or halides on mono- or disaccharides and alcohols or their substitution products.  The formation of the glucoside and its esterification thus take place simultaneously.  In an example, dextrose is warmed with a mixture of phosphoric acid, phosphorus pentoxide and lauryl alcohol and the product separated from aqueous acid by the addition of butyl alcohol or other solvent e.g. pyridine or methylcyclohexanol.  The resulting paste obtained by neutralisation may be dried, e.g. by means of an atomiser; or the product may be worked up by neutralising without first separating the aqueous acid.  Samples have been filed under Sect. 2 (5) of the Acts of glucoside esters which are derived from (a) glucose, ricinoleic acid and phosphoric acid and (b) milk sugar, lauryl alcohol and phosphoric acid.  Cycloaliphatic and aromatic alcohols and amino, chlor and carboxy derivatives of alcohols are mentioned as starting materials.  The products may be used for the same purposes as sulphonated fatty alcohols e.g., as washing, dispersing and foaming agents, and for improving fibres, either unneutralised or neutralised with alkalies, ammonia or organic bases. The Specification as open to inspection under Sect. 91 comprises also the production of any mineral acid ester, other than a sulphuric acid ester, of glucosides which are derived, on the one hand, from sugars or polymeric carbohydrates, and on the other from alcohols or phenols.  This subject-matter does not appear in the Specification as accepted.