Preparation method for amphiprotic potato starch microcrystalline wax/AKD (Alkyl Ketene dimer) neutral/alkaline sizing agent

A technology of potato starch and microcrystalline wax, which is applied in the direction of water-repellent addition, etc., can solve the problems of poor market competitiveness, high price and high price of AKD emulsion, achieve environmental protection improvement, improve emulsion stability and sizing performance, The effect of applying effect enhancement

Active Publication Date: 2012-09-12
盐城青墩津邦水务有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its price is higher, thus the AKD emulsion price t

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

Example Embodiment

[0013] Example one

[0014] A preparation method of amphoteric potato starch microcrystalline wax / AKD medium / alkaline sizing agent, comprising the following steps:

[0015] In the first step, 200 grams of water, 100 grams of potato starch, 2 grams of sodium hydroxide and 1 gram of hydrogen peroxide were added to the first reactor and reacted at 80°C for 1.0 hour to obtain oxidatively degraded potato starch, water, potato starch, and hydroxide The mass ratio of sodium to hydrogen peroxide is 200:100:2:1, then 7 grams of sodium hydroxide and 49 grams of 3-chloro-2-hydroxypropyltrimethylammonium chloride are added to the first reactor, and the temperature is raised to 90 React for 2 hours at ℃, add 5 g of acetic acid after cooling to 50℃, and then reduce to 20℃. The mass ratio of potato starch, sodium hydroxide, 3-chloro-2-hydroxypropyltrimethylammonium chloride and acetic acid is 100: 7:49:5,

[0016] In the second step, add water to the first reactor, adjust the solid content of the...

Example Embodiment

[0019] Example two

[0020] A preparation method of amphoteric potato starch microcrystalline wax / AKD medium / alkaline sizing agent, comprising the following steps:

[0021] In the first step, 200 grams of water, 100 grams of potato starch, 2 grams of sodium hydroxide and 1 gram of hydrogen peroxide are added to the first reactor and reacted at 81°C for 1.1 hours to obtain oxidatively degraded potato starch, water, potato starch, and hydroxide The mass ratio of sodium to hydrogen peroxide is 200:100:2:1, then 7 grams of sodium hydroxide and 49 grams of 3-chloro-2-hydroxypropyltrimethylammonium chloride are added to the first reactor, and the temperature is raised to 91 React for 1.8 hours at ℃, add 5 g of acetic acid after cooling to 51℃, and then reduce to 22℃. The mass ratio of potato starch, sodium hydroxide, 3-chloro-2-hydroxypropyltrimethylammonium chloride and acetic acid is 100: 7:49:5,

[0022] In the second step, add water to the first reactor, adjust the solid content of t...

Example Embodiment

[0025] Example three

[0026] A preparation method of amphoteric potato starch microcrystalline wax / AKD medium / alkaline sizing agent, comprising the following steps:

[0027] In the first step, add 200 grams of water, 100 grams of potato starch, 2 grams of sodium hydroxide and 1 gram of hydrogen peroxide to the first reactor and react for 1.2 hours at 82°C to obtain oxidatively degraded potato starch, water, potato starch, and hydroxide. The mass ratio of sodium to hydrogen peroxide is 200:100:2:1, then 7 grams of sodium hydroxide and 49 grams of 3-chloro-2-hydroxypropyltrimethylammonium chloride are added to the first reactor, and the temperature is raised to 92 React for 1.6 hours at ℃, add 5 g of acetic acid after cooling to 52℃, and then reduce to 24℃. The mass ratio of potato starch, sodium hydroxide, 3-chloro-2-hydroxypropyltrimethylammonium chloride and acetic acid is 100: 7:49:5,

[0028] In the second step, water is added to the first reactor to adjust the solid content of...

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
Cobb valueaaaaaaaaaa
Ring pressure indexaaaaaaaaaa
Cobb valueaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method for amphiprotic potato starch microcrystalline wax/AKD (Alkyl Ketene dimer) neutral/alkaline sizing agent. The preparation method comprises the steps of: firstly performing oxidative degradation on potato starch under action of hydrogen peroxide, performing cationization on the oxidatively degraded potato starch with 3-chlorine-2-trimethylhydroxypropyl chloride under action of sodium hydroxide, and neutralizing by acetic acid to obtain amphiprotic potato starch emulsifier; and finally emulsifying the AKD and NO.76 microcrystalline wax to obtain amphiprotic potato starch microcrystalline wax/AKD (Alkyl Ketene dimer) neutral/alkaline sizing agent. The prepared amphiprotic potato starch microcrystalline wax/AKD (Alkyl Ketene dimer) neutral/alkaline sizing agent has positive charge and negative charge, thus being beneficial to tight bonding with paper fibers, and greatly improving the sizing property; in the preparation process, the amphiprotic potato starch with cheap price is used as the emulsifier, and the NO.76 microcrystalline wax with cheap price is used for replacing part of AKD with higher price, so that not only can the emulsion stability and sizing property be improved, but also the sizing cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of polymer chemical sizing agents, and in particular relates to a preparation method of amphoteric potato starch microcrystalline wax / AKD medium / alkaline sizing agents. Background technique [0002] The major progress of modern sizing technology is the promotion of medium / alkaline sizing technology. The conversion of acidic papermaking to medium / alkaline papermaking is a major change in the history of papermaking in the world. Medium / alkaline sizing is a sizing method that adjusts the pH value to above 7 during the papermaking process and does not use aluminum sulfate in principle. The commonly used medium / alkaline sizing agent alkyl ketene dimer (AKD for short) is a product researched and developed in the late 1940s. AKD is a reactive medium / alkaline sizing agent that can react with cellulose , it can be used as both internal sizing agent and surface sizing agent. Its structural characteristics are compos...

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): D21H21/16C08B31/18C08B31/12
Inventor 张国运杨秀芳彭莉刘侠
Owner 盐城青墩津邦水务有限公司
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap