Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel acrylic ester polymerization oxidation crosslinking modified starch and preparation method thereof

A technology for oxidizing cross-linked starch and acrylate, applied in the field of modified starch, can solve problems such as difficulty in adapting to new printing requirements, hair loss, powder loss, etc. Effect

Active Publication Date: 2009-03-25
GUANGDONG HUIMEI STARCH SCI & TECH
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic surface sizing starch is mainly oxidized starch. In recent years, cationic or oxidative cross-linking composite modified starch has appeared. Paper using this kind of surface sizing starch is used in printing processes such as high-speed inkjet and multi-color overprinting. prone to powder shedding and hair loss
It is difficult to adapt to the requirements of the new printing industry

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

[0025] (1). Preparation of acrylic acid polymer:

[0026] Add 200kg of water into the reaction tank heated by jacket, and gradually raise the temperature to 38°C; then add 4kg of acrylamide, dissolve evenly, then add 1kg of butyl acrylate, 8kg of acrylonitrile and 20kg of acrylic acid, and finally add 1kg Ammonium persulfate, the reaction cylinder stirring speed remains on 200 rev / min;

[0027] Raise the reaction temperature to 68°C, react for 60 minutes, cool down to room temperature 28°C, and place it for use; the standing time is 30 minutes;

[0028] (2). Pre-wetting treatment with oxidized cross-linked starch for acrylate polymerization:

[0029] Mix the oxidized cross-linked starch and O-25 evenly in a weight ratio of 1:0.08, and heat it in the starch reaction tank to a temperature of 45°C, and react for 35 minutes to fully wet the starch;

[0030] The above-mentioned oxidized cross-linked starch has a concentration of 12% by weight, and the viscosity for surface sizing...

Embodiment 2

[0034] (1). Preparation of acrylic acid polymer:

[0035] Add 200kg of water into the jacketed reaction tank, and gradually heat up to a water temperature of 40°C;

[0036] Then add 5kg of acrylamide, dissolve evenly and then add 1.5kg of butyl acrylate, 10kg of acrylonitrile and 30kg of acrylic acid, and finally add 2.3kg of ammonium persulfate, and the stirring speed of the reaction tank remains at 150 rpm; the reaction temperature is raised to 72°C, after reacting for 65 minutes, cool down to room temperature 29°C, and set aside for use; the settling time is 25 minutes;

[0037] (2). Pretreatment before synthesis of oxidized cross-linked starch for acrylate polymerization:

[0038] Mix the oxidized cross-linked starch and O-25 evenly in a weight ratio of 1:0.15, and heat in the starch reaction tank to a temperature of 50°C, and react for 38 minutes to fully wet the starch;

[0039] The above-mentioned oxidized cross-linked starch has a concentration of 12% by weight, and ...

Embodiment 3

[0043] (1). Preparation of acrylic acid polymer:

[0044] Add 200kg of water into the reaction tank heated by the jacket, and gradually heat up to a water temperature of 42°C;

[0045] Then add 6kg of acrylamide, dissolve evenly and then add 2kg of butyl acrylate, 12kg of acrylonitrile and 40kg of acrylic acid, finally add 3.6kg of ammonium persulfate, and keep the stirring speed of the reaction tank at 80 rpm;

[0046] Raise the reaction temperature to 78°C, react for 70 minutes, cool down to room temperature 30°C, and place it for use; the standing time is 20 minutes;

[0047] (2). Pretreatment before synthesis of oxidized cross-linked starch for acrylate polymerization:

[0048] Mix the oxidized cross-linked starch and O-25 evenly in a weight ratio of 1:0.20, and heat it in the starch reaction tank to a temperature of 55°C, and react for 40 minutes to fully wet the starch;

[0049] The above-mentioned oxidized cross-linked starch has a weight concentration of 12%, and the...

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 novel acrylate oxidation polymerization cross-linked and modified starch and a preparation method thereof. The preparation method comprises the following steps: (1) the preparation of acrylic polymers; (2) pretreatment before the synthesis of the oxidized cross-linked starch used for the polymerization of acrylate; and (3) the preparation of the novel acrylate oxidation polymerization cross-linked and modified starch. The product of the novel acrylate oxidation polymerization cross-linked and modified starch has quite good affinity, adhesive force and improved serosa flexibility, thus greatly improving the phenomena of picking and hair slipping of paper in the printing process.

Description

Technical field: [0001] The invention belongs to the technical field of modified starch, and more specifically relates to a novel acrylate polymerized oxidized cross-linked modified starch and a preparation method thereof. Background technique: [0002] With the rapid development of high-speed printing technology, the requirements for paper surface strength, ring pressure and burst resistance are getting higher and higher, which puts forward higher requirements for the performance of surface sizing starch. [0003] At present, domestic surface sizing starch is mainly oxidized starch. In recent years, cationic or oxidative cross-linking composite modified starch has appeared. Paper using this kind of surface sizing starch is used in printing processes such as high-speed inkjet and multi-color overprinting. It is prone to powder shedding and hair loss. It is difficult to adapt to the requirements of the new printing industry. Invention content: [0004] The purpose of the ...

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): C08B31/18C08G81/02D21H21/16
Inventor 喻永青
Owner GUANGDONG HUIMEI STARCH SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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