Preparation method of sucrose polyester

A technology of sucrose polyester and sucrose, which is applied in the field of preparation of sucrose polyester, can solve the problems of no industrialized production route for synthetic sucrose polyester, late development of sucrose ester, and few varieties, etc., achieve high purity and improve compatibility , The effect that the reaction is easy to carry out

Inactive Publication Date: 2018-05-08
广州星业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of sucrose esters in my country is relatively late, and there are not many varieties. It is difficult to meet the needs of industries such as beverages, emulsified flavors, and daily chemicals. The development of sucrose polyesters is still in its infancy, and a mature industrial production route for synthetic sucrose polyesters has not yet been proposed.

Method used

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  • Preparation method of sucrose polyester
  • Preparation method of sucrose polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Synthesis of sucrose polyester crude product:

[0032] Add 15g of water and 0.1mol sucrose to a four-necked flask equipped with a vacuum device and a stirring device, and raise the temperature to 40°C. After the sucrose is completely dissolved, add 3.0g of weakly basic catalyst sodium acetate, and then add 0.033mol of soybean oil Acetate methyl ester, turn on the vacuum to -0.065MPa, heat up to 90°C and react for 8 hours; after the reactants become homogeneous, cool down to below 80°C, release the vacuum, add 0.62mol methyl cottonseed oleate, and add medium-strength Basic catalyst potassium carbonate 2.5g, continue to turn on the vacuum to -0.095MPa, raise the temperature to 150°C and keep it warm for 12 hours to obtain the crude sucrose polyester.

[0033] (2) Removal of catalyst and unreacted sucrose from crude sucrose polyester:

[0034] After the reaction is over, add pure water with a weight 3 times that of the crude sucrose polyester, heat up to 80°C, add 10%...

Embodiment 2

[0045] (1) Synthesis of sucrose polyester crude product:

[0046] Add 30g of water and 0.1mol sucrose to a four-necked flask equipped with a vacuum device and a stirring device, and raise the temperature to 60°C. After the sucrose is completely dissolved, add 3.5g of weakly basic catalyst sodium acetate, and then add 0.24mol of soybean oil Acetate methyl ester, turn on the vacuum to -0.095MPa, heat up to 110°C and react for 3 hours; after the reactants become homogeneous, cool down to below 80°C, release the vacuum, add 0.56mol methyl soybean oleate and add a medium-strength catalyst Potassium carbonate 3.5g, continue to turn on the vacuum to -0.095MPa, raise the temperature to 120°C and keep it warm for 8 hours.

[0047] (2) Removal of catalyst and unreacted sucrose from crude sucrose polyester:

[0048] After the reaction, add pure water twice the weight of the sucrose polyester crude product, heat up to 100°C, adjust the pH to 3 by adding 10% acetic acid solution, stir for...

Embodiment 3

[0059] (1) Synthesis of sucrose polyester crude product:

[0060] Add 60g of water and 0.1mol sucrose to a four-neck flask equipped with a vacuum device and a stirring device, and heat up to 80°C. After the sucrose is completely dissolved, add 5.5g of weakly alkaline catalyst sodium acetate, and then add 0.315mol of coconut oil Methyl cocoate, turn on the vacuum to -0.085MPa, heat up to 100°C and react for 7 hours; after the reactants become homogeneous, cool down to below 80°C, release the vacuum, add 0.735mol methyl coconut oleate and add a medium-strength catalyst Potassium carbonate 5.0g, continue to turn on the vacuum to -0.095MPa, raise the temperature to 115°C and keep it warm for 10 hours.

[0061] (2) Removal of catalyst and unreacted sucrose from crude sucrose polyester:

[0062] After the reaction is over, add pure water with a weight 2.5 times that of the crude sucrose polyester, heat up to 90°C, add 10% acetic acid solution to adjust the pH to 6, stir for 30 minu...

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Abstract

The invention discloses a preparation method of sucrose polyester. The preparation method comprises the following steps of adding fatty acid methyl ester into sucrose in batches to carry out reactions, wherein a first reaction is carried out in a specific reaction condition by adopting a weakly basic catalyst, and a second reaction is carried out in a specific reaction condition by using a moderate-intensity basic catalyst; afterwards, purifying reactants by adopting specific steps. Through adopting a way of adding the fatty acid methyl ester into the sucrose in batches and further using a combination of the weakly basic catalyst and the moderate-intensity basic catalyst, according to the method provided by the invention, the compatibility of raw materials is ameliorated; the reactions areeasily carried out; the yield is improved. Moreover, a mixture of sucrose monoester, diester and polyester is formed in the first reaction by adopting weakly basic catalytic esterification; disadvantages that the sucrose is difficultly dispersed and is easily coked to discolor in a reaction condition are overcome. In addition, a principle that the sucrose polyester is not dissolved in ethanol isadopted, the purification is carried out by separately adopting the ethanol as an extracting agent; an obtained product has high purity, and the sucrose polyester has advantages of safety, environmental friendliness and no irritation.

Description

technical field [0001] The invention relates to the field of fine chemical industry, in particular to a preparation method of sucrose polyester and the prepared product. Background technique [0002] With economic development and improvement of living standards, people pay more and more attention to their own health and the environment. Non-toxic, non-irritating, high-quality and efficient raw materials for daily necessities have become the direction of consumer demand and industry development. Sucrose polyester is a derivative of sucrose. It is a kind of non-ionic surfactant with wide HLB value (hydrophilic-hydrophobic balance value, also known as water oil degree), non-toxic, safe and non-irritating to human body . It is formed by the esterification of sucrose with fatty acids or esters synthesized from fatty acids. The properties of sucrose polyesters produced by the esterification of more than six hydroxyl groups on sucrose are similar to those of edible oils and fats....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H1/00C07H13/06
CPCC07H1/00C07H13/06
Inventor 谭意平孟巨光
Owner 广州星业科技股份有限公司
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