Unlock instant, AI-driven research and patent intelligence for your innovation.

Production process of hydroxypropyl distarch phosphate

A hydroxypropyl distarch phosphate and production process technology, applied in the field of preparation of modified starch, can solve the problems of difficult processing, high equipment investment cost, high cost, etc., and achieve smooth taste, strong water retention capacity, and moderate viscosity Effect

Pending Publication Date: 2020-08-14
江苏天将生物科技有限公司
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the washing process, it is necessary to consume 6-10 times the weight of starch for washing with sodium sulfate, resulting in a large amount of high salt water that is difficult to handle. If this high salt water is discharged into the sewage pipe, it cannot be treated by anaerobic process, and only high Cost-effective aerobic aeration method for treatment, and the treatment is difficult, and the investment cost of equipment is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production process of hydroxypropyl distarch phosphate
  • Production process of hydroxypropyl distarch phosphate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of embodiment of the production technique of hydroxypropyl distarch phosphate of the present invention, the production technique of hydroxypropyl distarch phosphate described in the present embodiment comprises the following steps:

[0022] Take by weighing 5kg of waxy cornstarch (moisture content 13%), be mixed with mass concentration and be 35% starch milk, detect initial pH value and Baume degree, flow and add mass concentration within 5h and be 5% potassium hydroxide solution, make The pH of starch milk is 12, add propylene oxide with 8% starch mass, heat up to 45°C, keep warm for 22 hours, add 0.05% starch mass sodium trimetaphosphate, and then carry out cross-linking reaction for 4 hours, neutralize the pH to 5.0 and use starch Wash with 1 times the weight of water, dehydrate, dry, pack to obtain hydroxypropyl distarch phosphate, and carry out index detection to the product.

Embodiment 2

[0024] A kind of embodiment of the production technique of hydroxypropyl distarch phosphate of the present invention, the production technique of hydroxypropyl distarch phosphate described in the present embodiment comprises the following steps:

[0025] Take by weighing 5kg of waxy cornstarch (moisture content 13%), be mixed with mass concentration and be 35% starch milk, detect initial pH value and Baume degree, flow and add mass concentration within 4h and be 7% potassium hydroxide solution, make The pH of starch milk is 12, add propylene oxide with 8% starch mass, heat up to 45°C, keep warm for 22 hours, add 0.05% starch mass sodium trimetaphosphate, and then carry out cross-linking reaction for 4 hours, neutralize the pH to 5.0 and use starch Wash with 1 times the weight of water, dehydrate, dry, pack to obtain hydroxypropyl distarch phosphate, and carry out index detection to the product.

Embodiment 3

[0027] A kind of embodiment of the production technique of hydroxypropyl distarch phosphate of the present invention, the production technique of hydroxypropyl distarch phosphate described in the present embodiment comprises the following steps:

[0028] Take by weighing 5kg of waxy cornstarch (moisture content 13%), be mixed with mass concentration and be 35% starch milk, detect initial pH value and Baume degree, flow and add the potassium hydroxide solution that mass concentration is 9% in 3h, make The pH of starch milk is 12, add propylene oxide with 8% starch mass, heat up to 45°C, keep warm for 22 hours, add 0.05% starch mass sodium trimetaphosphate, and then carry out cross-linking reaction for 4 hours, neutralize the pH to 5.0 and use starch Wash with 1 times the weight of water, dehydrate, dry, pack to obtain hydroxypropyl distarch phosphate, and carry out index detection to the product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a production process of hydroxypropyl distarch phosphate. The production process comprises the following steps: (1) mixing native starch with water to prepare starch milk; (2)feeding or dropwise adding a potassium hydroxide solution into the starch milk obtained in the step (1) to adjust the pH value; (3) adding epoxypropane, and carrying out a reaction for 18-22 h at a temperature of 40-45 DEG C; and (4) adding sodium trimetaphosphate or phosphorus oxychloride to react for 3-8 hours, washing, dehydrating and drying to obtain the hydroxypropyl distarch phosphate. According to the production process, the potassium hydroxide solution is used for adjusting the pH value of a reaction system, addition of sodium sulfate, sodium chloride and other salts as expansion inhibitors is not needed, and the production technical problem that a large amount of high-salinity wastewater difficult to treat is generated in the washing procedure is solved.

Description

technical field [0001] The invention relates to a preparation method of modified starch, in particular to a production process of hydroxypropyl distarch phosphate. Background technique [0002] Hydroxypropyl distarch phosphate is a product obtained by reacting raw starch with cross-linking agents such as propylene oxide and sodium trimetaphosphate or phosphorus oxychloride under alkaline conditions. The production medium of hydroxypropyl distarch phosphate includes alcohol aqueous solution, alcohol solution and aqueous solution. Alcohol aqueous solution and alcohol are used as the medium, the production equipment and reaction conditions are high, and it is not easy to industrialize, and the storage of alcohol has potential safety hazards for the factory. Sodium hydroxide is the commonly used alkaline catalyst for the production of hydroxypropyl distarch phosphate in water. Add a certain concentration of sodium hydroxide solution to adjust the pH value of the reaction syste...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08B31/16A23C9/13A23C9/137A23L27/60A23L29/219A23L29/30
CPCC08B31/16A23L29/30A23L27/60A23C9/137A23C9/13A23L29/219
Inventor 邵亚东刘大伟邬存斌
Owner 江苏天将生物科技有限公司