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

High-performance cationic rosin size and preparation method thereof

A cationic rosin glue, high-performance technology, applied in the direction of rosin addition, hydrophobic agent addition, etc., can solve the problems of difficult emulsification, high melting point, strong interaction, etc., and achieve good stability

Active Publication Date: 2017-01-11
SHANGHAI DONGSHENG NEW MATERIALS
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to prepare stable cationic rosin glue, mainly because rosin itself is difficult to emulsify and has certain crystallization ability. It is not economical or environmentally friendly, and the high temperature method has higher requirements for emulsifiers. At the same time, rosin molecules have carboxyl groups, which are easy to produce anionic carboxylate ions, which also affects the stability of cationic dispersion systems.
In order to obtain a sufficiently stable cationic rosin gum, it is very critical to select a suitable emulsifier, and there are many related reports. In these studies, the anionic emulsifier and cationic emulsifier mentioned in the patents US5846308, US6369119, and CN1081262C are compatible with each other. However, although anionic and cationic emulsifiers have a strong synergistic effect, their interaction is too strong, making the emulsification process difficult to control, so there are some problems in the preparation of cationic rosin gum, such as the use of polymer anionic emulsifiers and When the polymer cationic emulsifier is mixed with each other, the two are easy to precipitate and co-precipitate. When the small molecule anionic emulsifier and the polymer cationic emulsifier are used together, the small molecule anionic emulsifier is easy to be freed, which affects the stability of the system.

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
  • High-performance cationic rosin size and preparation method thereof
  • High-performance cationic rosin size and preparation method thereof
  • High-performance cationic rosin size and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a kind of preparation method of high-performance cationic rosin glue, it is characterized in that, comprises:

[0022] Step 1: Heat and melt the mixture of rosin and fortified rosin, keeping the temperature at about 150-190°C;

[0023] Step 2: Heat the amphoteric polymer emulsifier solution to above 96°C, and slowly add it dropwise into the mixed rosin melt under stirring conditions, and continue to emulsify for 10 minutes after dropping;

[0024] Step 3: Heat the cationic polymer emulsifier solution to above 96°C, slowly add it dropwise into the mixed rosin melt, and continue to emulsify for 30 minutes after the drop;

[0025] Step 4: Heat deionized water to above 96°C, add it slowly and then quickly to the material, and increase the stirring speed to above 1500 rpm, and reduce the stirring speed to below 100 rpm after the phase inversion of the system;

[0026] Step 5: Rapidly cool the emulsion to below 38°C through the cooling device, then add...

Embodiment 1

[0038] Heat and melt the mixture of 200g rosin and 100g fuma rosin, keeping the temperature at about 160°C; heat 25g of 20% amphoteric polymer emulsifier solution to 98°C, and slowly add it dropwise into the mixed rosin melt while stirring , continue to emulsify for 10 minutes after dropping; heat 300g of 40% cationic polymer emulsifier solution to 98°C, slowly add dropwise to the mixed rosin melt, and continue emulsifying for 30 minutes after dropping; heat 590g of deionized water to 98 ℃, first slowly and then quickly add to the material, and increase the stirring speed to 2000 rpm, and reduce the stirring speed to 100 rpm after the phase inversion of the system; quickly cool the emulsion to 35 °C through the cooling device, and then add 20% aluminum 500g of salt solution, stirred evenly, adjusted the pH value to 3.0 with acid, discharged, and cleaned the reaction device.

Embodiment 2

[0040] Heat and melt the mixture of 200g rosin and 100g maleic rosin, keeping the temperature at about 160°C; heat 25g of 20% amphoteric polymer emulsifier solution to 98°C, and slowly add it dropwise into the mixed rosin melt under stirring , continue to emulsify for 10 minutes after dropping; heat 250g of 40% cationic polymer emulsifier solution to 98°C, slowly add dropwise to the mixed rosin melt, and continue emulsifying for 30 minutes after dropping; heat 580g of deionized water to 98 ℃, first slowly and then quickly add to the material, and increase the stirring speed to 2000 rpm, and reduce the stirring speed to 100 rpm after the phase inversion of the system; quickly cool the emulsion to 35 °C through the cooling device, and then add 20% aluminum 500g of salt solution, stirred evenly, adjusted the pH value to 3.0 with acid, discharged, and cleaned the reaction device.

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 a high-performance cationic rosin size and a preparation method thereof. The high-performance cationic rosin size is prepared by adopting an interworking emulsification system of an amphoteric polymeric emulsifier and a high-cationic-degree polymeric emulsifier and by using a normal-temperature normal-pressure phase inversion method. The preparation method is simple in preparation process and relatively small in investment, and compared with a cationic rosin size prepared by using a conventional normal-temperature normal-pressure phase inversion method, the high-performance cationic rosin size prepared by the method disclosed by the invention is not liable to bubble, relatively small in particle size and relatively good in stability.

Description

technical field [0001] The invention belongs to the field of polymer synthesis and papermaking chemicals, and relates to a rosin gum, in particular to a high-performance cationic rosin gum and a preparation method thereof. Background technique [0002] Rosin is an extremely important paper-making additive. It is rich in resources, not only has low sizing cost, but also can meet the sizing requirements of most paper and cardboard. Therefore, although there are many new sizing agents in the market, rosin Still able to occupy a dominant position among a wide variety of internal sizing agents. [0003] Cationic rosin size is currently the most widely used rosin sizing agent. It carries a positive charge and can fix itself on negatively charged fibers without relying on trivalent aluminum salt. Therefore, the amount of aluminum salt is more than that of anionic dispersed rosin size. Less, because it is not restricted by aluminum salt, it can achieve neutral sizing and reduce 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
IPC IPC(8): C08J3/02C08L93/04D21H21/16D21H17/62
Inventor 施晓旦杨立滨金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS
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