Preparation method of high substituting degree hydroxy propyl distarch phosphate

A technology of hydroxypropyl distarch phosphate and hydroxypropyl distarch phosphate, which is applied in the field of preparation of highly substituted hydroxypropyl distarch phosphate, can solve problems such as backwardness, backward processing technology and application, and achieve Wide range of raw material sources, low cost, and strong bonding effect

Inactive Publication Date: 2007-01-31
四平帝达变性淀粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the backwardness of the domestic technical level, some types of modified starches are monopolized by large international companies, such as this highly substituted hydroxypropyl distarch phosphate. A gap in the industry

Method used

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  • Preparation method of high substituting degree hydroxy propyl distarch phosphate

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Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: at first 100 kilograms of potato starch and 10 kilograms of sodium sulfate are added 180 kilograms of water and are adjusted into the starch slurry of 20-23Be in the reactor, constantly stir, add the sodium hydroxide that mass concentration is 3-3.8% in the kettle Adjust the pH value to 11.5, then add 0.5 kg of sodium trimetaphosphate, stir for 30 minutes, add 6 kg of propylene oxide, heat up to 45-49 ° C for 21 hours. After the above-mentioned reaction finishes, be that 9% hydrochloric acid is adjusted pH value to 6.0 with mass concentration, add 200 kilograms of water washings, sedimentation in the kettle, wash again in the same way, to remove impurity (sodium sulfate, sodium chloride or other chemicals residues) to produce finished products.

Embodiment 2

[0022] Embodiment 2: step is the same as embodiment 1, difference is: the pH value of esterification reaction process remains on 11.0

Embodiment 3

[0023] Embodiment 3: step is the same as embodiment 1, and difference is: the pH value of esterification reaction process remains on 12.0

[0024] Adhesive

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PUM

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Abstract

The present invention discloses a preparation method of high substituting degree hydroxypropyl distarch phosphate. It is made up by using water as medium and using potato starch, propylene epoxide, sodium trimetaphosphate and sodium hydroxide as raw material through the processes of mixing paste, esterification, cross-linking, neutralization, washing, drying, sieving and packaging. Said product is a white powder.

Description

technical field [0001] The invention relates to a method for preparing modified starch, in particular to a method for preparing hydroxypropyl distarch phosphate with a high degree of substitution. Background technique [0002] Modified starch began to develop in the middle of the nineteenth century, and has a history of 150 years. In the past 30 years, the research, production and application of modified starch have entered a stage of vigorous development, and the variety of products has continued to increase. In recent years, the modified starches of international large groups with more advanced technology have entered the Chinese market one after another, which has driven the understanding and demand of the domestic food industry for modified starches. However, due to the backwardness of the domestic technical level, some types of modified starches are monopolized by large international companies, such as this highly substituted hydroxypropyl distarch phosphate. A blank s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/06
Inventor 王三平王云志曾蒲春
Owner 四平帝达变性淀粉有限公司
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