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

A kind of amphoteric polyacrylamide paper strengthening agent and preparation method thereof

A polyacrylamide and paper strengthening agent technology, which is applied in the direction of strengthening agent addition, can solve problems such as failure to reach customers and limited strengthening effect, and achieve the effect of improving the strengthening effect, improving the strengthening effect, and reducing costs

Active Publication Date: 2021-03-23
南京鼎兆新材料技术研发有限公司
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of strengthening agent can meet the requirements of strengthening and improving water filtration when the fiber quality is not too bad and the papermaking system is relatively clean. When the amount is higher than 40kg / t paper), high anion garbage content (positive charge demand exceeds 700μeq / L), high system temperature (higher than 50°C), and the use of sludge reuse, the enhancement effect is very limited. Often fail to meet customer needs

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
  • A kind of amphoteric polyacrylamide paper strengthening agent and preparation method thereof
  • A kind of amphoteric polyacrylamide paper strengthening agent and preparation method thereof
  • A kind of amphoteric polyacrylamide paper strengthening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 400.0 parts of deionized water into the reaction device with stirrer, thermometer, reflux condenser, nitrogen inlet pipe and dropping funnel, start stirring, add AM 64.6828 parts (45.5mol%), AMCO 7.0585 parts (2.5mol%) %), GMA 1.4215 parts (0.5mol%), DMAA 0.6937 parts (0.35mol%), AA 1.4412 parts (1.0mol%), SMAS 0.9489 parts (0.3mol%) and ethylenediaminetetraacetic acid 0.097 parts, stir until uniform Finally, adjust the pH of the system to 2.7-3.0 with 50% sulfuric acid. At the same time, prepare the secondary monomer in advance, that is, 100.0 parts of deionized water, 64.6828 parts of AM (45.5mol%), 7.0585 parts of AMCO (2.5mol%), 1.4215 parts of GMA (0.5mol%), 0.6937 parts of DMAA (0.35mol%) , AA 1.4412 parts (1.0mol%), after stirring until uniform, adjust the pH of the system to 2.7-3.0 with 50% sulfuric acid. Nitrogen was passed through the reaction device to remove the air in the system. When the temperature was raised to 62° C., the first initiator (0.16 par...

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 an amphoteric polyacrylamide paper reinforcing agent and a preparation method thereof. In a reaction system of AM, DMAA, SMAS, EDTA and AA, the cationic monomer acryloyl morpholine (ACMO) which has a six-membered ring and does not contain an ester bond is introduced to replace a conventional cationic monomer, and meanwhile, the vinyl monomer AGE or GMA with an epoxy group is introduced, so the reinforcing effect of the obtained reinforcing agent for papermaking is improved by 10%-50% in comparison with the reinforcing effect of a conventional reinforcing agent under more severe papermaking system environments such as high salt, high reinforcing agent dosage, high anion garbage content, high system temperature and sludge reuse.

Description

technical field [0001] The invention belongs to the technical field of papermaking chemicals, in particular to a papermaking strengthening agent and a preparation method thereof. Background technique [0002] With the increasing shortage of fiber raw materials, the import of foreign waste paper is restricted, and the number of times fiber raw materials are reused increases, paper mills have to lower their requirements for fiber quality. More and more paper mills use slightly inferior or inferior fiber raw materials, such as increasing the proportion of national waste used in packaging paper, adding papermaking sludge to packaging paper, and so on. However, paper mills and their downstream customers have not lowered their requirements for paper quality (especially paper strength). [0003] Environmental protection requirements are becoming increasingly stringent, and the requirements for wastewater, solid waste, and exhaust gas emissions from paper mills are becoming more an...

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 Patents(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/60C08F222/02C08F220/06C08F216/14C08F220/32C08F220/54C08F228/02D21H21/18
CPCC08F220/56D21H21/18C08F220/58C08F220/60C08F222/02C08F220/06C08F216/1416C08F220/325C08F220/54C08F228/02
Inventor 郭丽芳李诗萃刘秋元杨云艳李陶伟
Owner 南京鼎兆新材料技术研发有限公司
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