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

Method for preparing high-solid-content and low-viscosity core-shell structure styrene-acrylic emulsion

A technology with a core-shell structure and high solid content, applied in adhesive types, ester copolymer adhesives, coatings, etc., can solve problems such as instability in the preparation process

Inactive Publication Date: 2010-09-22
HUBEI UNIV +1
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the characteristics of the core-shell two-phase structure also lead to the instability of the preparation process

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
  • Method for preparing high-solid-content and low-viscosity core-shell structure styrene-acrylic emulsion
  • Method for preparing high-solid-content and low-viscosity core-shell structure styrene-acrylic emulsion
  • Method for preparing high-solid-content and low-viscosity core-shell structure styrene-acrylic emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Formula 1: The latex prepared by this formula is suitable for use as a water-based adhesive. For example, it is used as sizing agent and glazing agent on the surface of paper, which has good bonding strength. Since the latex particle shell is styrene with a high glass transition temperature, it is not easy to stick to the roller when it is calendered after curing, and it is extruded. The surface gloss of the paper is high.

[0022] The emulsion obtained by the formula is a styrene-acrylic emulsion with a binary particle size distribution, the solid content is greater than 60%, and has the characteristics of good gloss, high solid content and low viscosity. Compared with traditional water-based emulsion adhesives, this product has the characteristics of fast drying, convenient sizing, uniform application and strong adhesion.

[0023]

[0024]

[0025] Formula 2: The latex in this formula is suitable for preparing monodisperse microspheres. The emulsion obtained f...

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
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing high-solid-content and low-viscosity core-shell structure styrene-acrylic emulsion, which comprises the following steps: firstly, preparing copolymer seed emulsion in binary particle-size distribution of styrene (St) and butyl acrylate (BA); and then, dripping mixed monomers composed of styrene (St) or butyl acrylate (BA) and acrylic acid (AA) on the basis of the semi-continuous feeding process, wherein anionic emulsion and nonionic emulsion constitute a compound emulsification system in the presence of water-soluble initiator and sodium hydrogen carbonate as buffering agent. By controlling the proportion and dripping rate of the compound emulsion in different stages and adjusting the surface coverage of latex particle emulsifier, the method of the invention is capable of preparing high-solid-content and low-viscosity stable core-shell-type poly(butyl acrylate / styrene / acrylic acid) / poly(styrene / acrylic acid) [P(BA / St / AA) / P(St / AA)] emulsion. The product is widely applicable in coatings and adhesives.

Description

technical field [0001] This scheme belongs to the invention patent, which relates to polymer emulsion, specifically a preparation method of modified styrene-acrylic emulsion. Background technique [0002] Styrene-acrylic emulsion is widely used in water-based varnishes, interior and exterior wall coatings, floor polishes and paper coating adhesives because of its excellent film-forming properties, water resistance, weather resistance, color retention and adhesion. . Styrene-acrylic emulsion is an emulsion obtained by polymerizing acrylate monomers and styrene. my country began to develop styrene-acrylic emulsion in the 1970s, and it was officially put into use in the 1980s. The demand for its products has continued to rise. However, ordinary latex products can no longer meet people's needs. Therefore, the research and development of high-performance styrene-acrylic emulsion has become one of the keys to the development of high-performance coatings. [0003] Styrene-acrylic...

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): C08F220/18C08F212/08C08F220/06C08F2/30C08F2/26C08F4/40C09D133/08C09J133/08
Inventor 邓锐艾照全周奇龙
Owner HUBEI UNIV
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