Preparation method of cross-linked hydroxypropyl composite modified starch by one-step process
A compound modified starch and hydroxypropyl technology, which is applied in the field of modified starch, can solve the problems of affecting the amount of cross-linking agent added, the reduction of etherification reaction efficiency, and the reduction of starch milk concentration, so as to prolong the cross-linking reaction time and reduce production capacity. Consumption, the effect of reducing the amount
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0019] (1), add the anhydrous sodium sulfate of 13kg in 163kg deionized water, the sodium trimetaphosphate of 0.05kg, the sodium hydroxide of 1.0kg, mix and stir until dissolving, add 100kg starch (dry basis) again, stirring alkalization time is 60min.
[0020] (2) Heat up to 40°C, add 8 kg of propylene oxide, react for 16 hours, then add 10% hydrochloric acid for neutralization, and adjust the pH value to 6.5.
[0021] (3) The neutralized starch milk is washed to remove impurities and reaction by-products, then centrifuged, dried, and sieved to obtain the cross-linked hydroxypropyl composite modified starch.
Embodiment 2
[0023] (1), add the anhydrous sodium sulfate of 15kg in 185kg deionized water, the sodium trimetaphosphate of 0.08kg, the sodium hydroxide of 1.2kg, mix and stir until dissolving, add 100kg starch (dry basis) again, stirring alkalization time is 40min.
[0024] (2) Heat up to 42°C, add 5 kg of propylene oxide, react for 18 hours, then add 10% hydrochloric acid for neutralization, and adjust the pH value to 6.5.
[0025] (3) The neutralized starch milk is washed to remove impurities and reaction by-products, then centrifuged, dried, and sieved to obtain the cross-linked hydroxypropyl composite modified starch.
Embodiment 3
[0027] (1), add the anhydrous sodium sulfate of 14kg in 170kg deionized water, the sodium trimetaphosphate of 0.03kg, the sodium hydroxide of 1.1kg, mix and stir until dissolving, add 100kg starch (dry basis) again, stirring alkalization time is 50min.
[0028] (2) Heat up to 42°C, add 10 kg of propylene oxide, react for 14 hours, then add 10% hydrochloric acid for neutralization, and adjust the pH value to 7.
[0029] (3) The neutralized starch milk is washed to remove impurities and reaction by-products, then centrifuged, dried, and sieved to obtain the cross-linked hydroxypropyl composite modified starch.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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