TH110A - The process of producing surfactant, which contains sucrose ester. - Google Patents

Abstract

The process of preparing surfactant mixtures containing sucrose, mono- and diesters involves starting a mixture of solid sucrose particles, at least one fatty acid triglyceride with at least eight carbon atoms, and a balic transesterification catalyst. This mixture is reacted at temperatures between 110 and 140 °C and at atmospheric pressure without any solvent. The mixture can be improved by using starting mixtures containing diesters and/or mono-glycerides. To obtain a hydroxyl concentration greater than 500 mg of KOH/100 g of starting mixture, the following must be present: b. At least 10% by weight of soap made from fats other than basic transesterification catalysts, and at least 50% by weight of potassium soap; and c. (when the soap mixture contains less than 20% by weight) at least 25% by weight of sucrose. This improved process yields high results with a much shorter reaction time and high HLB values.

Claims (10)

1. The process of preparing surfactant mixtures containing sucrose mono- and di-esters involves reacting a starting mixture of sucrose in solid particle form, at least one fatty acid triglyceride with at least 8 carbon atoms, and one basic transesterification catalyst at temperatures ranging from 110 to 140 degrees Celsius and at atmospheric pressure, without any solvent. The starting mixture must: a. contain di and/or mono-glycerides in an amount sufficient to yield a hydroxylac concentration greater than 500 mg of KOH/100 g of starting mixture; b. contain at least 10% by weight of non-basic fatty acid soap. Transesterification catalysis and contains at least 50% by weight of potassium soap and (when the soap content is less than 20% by weight) contains at least 25% sucrose by weight. 2. The process pursuant to claim 1, where the initial soap content of the mixture is at least 20% by weight. 3. The process under claim 1, where the soap content of the mixture is at least 25-30% by weight. 4. The process under claim 1 where the soap contains at least 70% by weight of potassium soap. 5. The process under claim 1 involves adding the pre-prepared soap to the starting mixture. The fatty acid portion of the soap is distinct from that of the glyceride. 6. The process under claim 1, where soap spontaneously forms in the starting mixture before sucrose is added. 7. The process under claim 1 where the belic transesterification catallast is potassium carbonate and the hydroxyl value of the starting material is from 1000 to 7500 mg KOH/100 n. 8. Procedure under Claim 1: The reaction mixture is blended by repeated circulation. 9. The process under claim 1 produces a continuous effect by continuously adding to the reaction vessel the pre-mixed glyceride and soap, sucrose and catalyst; mixing the resulting reaction mixture while it is in the reaction vessel; and continuously removing the reacted substances from the reaction vessel. 10. The process under claim 1 where the sucrose content in the initial mixture ranges from 27.5 to 40% by weight. (10 claims, 2 pages, 0 figures)