Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Sulfonated composite modified starch

A compound modified starch and sulfonation technology, which is applied in the field of sulfonated compound modified starch, can solve the problems of organic solvent residue, environmental pollution, complicated process, etc., and achieve the effects of high viscosity stability, no three wastes, and wide application prospects

Active Publication Date: 2018-07-03
HUNAN ER KANG PHARMA
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN201511023279 relates to a preparation method of sulfonated modified composite modified starch slurry. In the method, starch is cationic denatured by etherifying agent 3-chloro-2-hydroxypropyltrimethylammonium chloride, and then mixed with The octenyl succinic anhydride is subjected to esterification reaction, and finally the obtained material is reacted with sodium bisulfite to obtain a sulfonated modified composite modified starch slurry. The process of this method is complicated and difficult to be industrialized; The preparation method of starch: spray the organic solution of chlorosulfonic acid diluted with organic solvent into the starch under stirring state, and the obtained mixture is stirred and reacted at room temperature for 0.5~1 hour to obtain the product. Low consumption, but there are still organic solvent residues, which require subsequent treatment and pollute the environment

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 100g of tapioca starch and 1g of sodium hydroxide powder into a container with stirring, stir and mix well, fully alkalize, and add 1% ammonium persulfate solution by spraying feeding method while stirring, and the spraying speed is 30ml / min; After uniformity, raise the temperature to 50°C for oxidation reaction, the oxidation time is 1 hour; after the oxidation reaction is completed, cool the substance to 30°C, add 1% ferrous ammonium sulfate to remove excess ammonium persulfate, and spray The speed is 30~50ml / min; Add an appropriate amount of water to adjust the water content of the material to 20%, add 1g of 1,3-propyl sultone, stir and mix well, then raise the temperature to 75°C for sulfonation reaction, the reaction 3 hours; drying the material after the sulfonation reaction at 110° C., and then pulverizing it into a powder with a particle size of 60 mesh to obtain a modified starch product. It was determined that the elongation at break of the modified starch...

Embodiment 2

[0028] Add 100g of tapioca starch and 2g of sodium hydroxide powder into a container with stirring, stir and mix well, fully alkalize, add 4% ammonium persulfate solution (w / v) by spraying and feeding while stirring, and the spraying speed is 36ml / min; after mixing, raise the temperature to 53°C for oxidation reaction, the oxidation time is 1.3 hours; after the oxidation reaction is completed, cool the substance to 33°C, and add 4% ferrous ammonium sulfate to remove excess Ammonium sulfate, the spray speed is 36ml / min; add appropriate amount of water, adjust the water content of the material to 22%, add 3g of 1,3-propyl sultone, stir and mix well, then raise the temperature to 78°C for sulfonation The reaction lasted for 3.6 hours; the material after the sulfonation reaction was dried at 117° C., and then crushed into a powder with a particle size of 80 mesh to obtain a modified starch product. It was determined that the elongation at break of the modified starch film was 4.62...

Embodiment 3

[0030] Add 100g of tapioca starch and 4g of sodium hydroxide powder into a container with stirring, stir and mix well, and fully alkalize, while stirring, add 7% ammonium persulfate solution (w / v) by spraying and feeding, and the spraying speed is 43ml / min; after mixing, raise the temperature to 57°C for oxidation reaction, the oxidation time is 1.7 hours; after the oxidation reaction is completed, cool the substance to 37°C, and add 7% ferrous ammonium sulfate to remove excess Ammonium sulfate, the spray speed is 43ml / min; Add appropriate amount of water to adjust the water content of the material to 23%, add 6g of 1,3-propyl sultone, stir and mix well, then raise the temperature to 81°C for sulfonation The reaction lasted for 4.3 hours; the material after the sulfonation reaction was dried at 124° C., and then crushed into a powder with a particle size of 100 mesh to obtain a modified starch product. It was determined that the elongation at break of the modified starch film ...

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

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
elongation at breakaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention provides sulfonated composite modified starch. The sulfonated composite modified starch is mainly prepared from the following components in parts by weight: 100 parts of starch, 1-6 parts of sodium hydroxide, 1-10 parts of ammonium persulfate solution (1-10%), 1-10 parts of ammonium ferrous sulfate solution (1-10%), 1-10 parts of 1,3-propyl sultone and 1-23 parts of water. The sulfonated composite modified starch has the advantages that hydroxyls on a starch molecular chain are oxidized in a preparation process, and hydrophilic sulfonic acid groups are introduced; the productiontechnology is simple, conditions are mild, an organic solvent polluting the environment is not used, and the obtained sulfonated composite modified starch has high viscosity stability and strong permeability, can greatly improve adhesion property after gelatinization and has excellent temperature resistance and salt tolerance.

Description

technical field [0001] The invention relates to a sulfonated composite modified starch. technical background [0002] Starch is a natural polysaccharide with rich sources and no harm to the environment. It has good biodegradability and has a very wide range of applications in food, industry and other fields. Thickener for food, as a filler for biodegradable plastics, after starch gelatinization, it is used to adjust the viscosity of drilling mud in the petroleum industry or as a sizing for light yarn in textiles. [0003] The structure of starch is a starch macromolecular ring main chain composed of glucose groups, which is rigid, less flexible, and has a high glass transition temperature. In starch molecules, the hydroxyl content even reaches 31.5%. Therefore, starch has the properties of polyols. , which can form ether with alcohol and ester with acid, and is easily oxidized by oxidant, it is a hydrophilic polymer. However, the quality of natural starch is very unstable....

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/18
CPCC08B31/185
Inventor 帅放文王向峰章家伟
Owner HUNAN ER KANG PHARMA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com