A kind of salt spray resistant vinylidene chloride copolymer latex and preparation method thereof

A technology of copolymer latex and vinylidene chloride, applied in coatings, anti-corrosion coatings, etc., can solve the problems of easy discoloration, discoloration, and foaming of films, and achieve improved storage stability, improved stability, and strong adhesion Effect

Active Publication Date: 2016-08-24
河北昊泽化工有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above patents all involve comonomers to modify polyvinylidene chloride, but the latex still has dehydrochlorination reaction, which is easy to change color and has poor color stability. The coated film is easy to change color and foam, and cannot remain transparent for a long time Colorless state, the prior art has not been able to solve this problem well

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 salt spray resistant vinylidene chloride copolymer latex and preparation method thereof
  • A kind of salt spray resistant vinylidene chloride copolymer latex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 500g of deionized water and emulsifier (10g of octylphenol polyoxyethylene ether (X-100)) into a 2L reaction kettle, start stirring, and replace the residual air in the system with high-purity nitrogen until the oxygen content in the kettle is lower than 30ppm; Add 90g of vinyl chloride monomer, 0.2g of potassium persulfate and 3g of sodium bicarbonate into the kettle, and stir for pre-dispersion at room temperature for 25min; Acrylic acid-2-ethylhexyl monomer and 0.8g potassium persulfate, keep the reaction pressure of the reactor at ±0.01MPa of the set polymerization pressure; then add 10g of N-methylolacrylamide monomer dropwise to control the reaction The temperature is 60°C; when the polymerization reaction pressure drops by 0.2 MPa, add 1 g of n-dodecyl mercaptan, stop stirring, lower the reaction temperature, release the remaining gas in the reactor, and discharge to obtain vinylidene chloride copolymer latex. The performance parameters of the prepared vinyli...

Embodiment 2

[0040]Add 500g of deionized water and (10g of octylphenol polyoxyethylene ether (X-100)) into the 2L reaction kettle, start stirring, and replace the residual air in the system with high-purity nitrogen until the oxygen content in the kettle is lower than 30ppm; Add 90g of vinyl chloride monomer, 0.2g of potassium persulfate and 3g of sodium bicarbonate, stir and pre-disperse at room temperature for 25min; the temperature of the reaction kettle is raised to 60°C, increase the stirring speed of the reaction kettle, and add 325g of vinylidene chloride monomer and 76g of acrylic acid- 2-Ethylhexyl ester monomer and 0.8g potassium persulfate, keep the reaction pressure of the reactor at ±0.01MPa of the set polymerization pressure; then add 10g of N-methylolacrylamide monomer dropwise, and control the reaction temperature at 60 °C; when the polymerization reaction pressure drops by 0.2 MPa, add 1 g of n-dodecyl mercaptan, stop stirring, lower the reaction temperature, release the re...

Embodiment 3

[0042] Add 500g of deionized water and emulsifier (10g of octylphenol polyoxyethylene ether (X-100)) into a 2L reaction kettle, start stirring, and replace the residual air in the system with high-purity nitrogen until the oxygen content in the kettle is lower than 30ppm; Add 90g of vinyl chloride monomer, 0.1g of potassium persulfate and 3g of sodium bicarbonate into the kettle, stir and pre-disperse for 25min at room temperature; the temperature of the reaction kettle is raised to 60°C, increase the stirring speed of the reaction kettle, and add 334g of vinylidene chloride monomer and 50g of Acrylic acid-2-ethylhexyl monomer and 0.9g potassium persulfate, keep the reaction pressure of the reactor at ±0.01MPa of the set polymerization pressure; then add 24g of N-methylolacrylamide monomer dropwise to control the reaction The temperature is 60°C; when the polymerization reaction pressure drops by 0.2 MPa, add 1 g of n-dodecyl mercaptan, stop stirring, lower the reaction tempera...

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 salt-fog-resistant vinylidene chloride copolymer latex and a preparation method thereof, wherein the salt-fog-resistant vinylidene chloride copolymer latex is obtained by carrying out copolymerization modification on vinylidene chloride serving as a main monomer, a vinyl chloride monomer, an acrylic monomer and an acrylamide monomer. A polymerization method is optimized through optimizing factors such as a polymerization monomer formula, an emulsifying agent formula, polymerization reaction temperature and time, a charging way and the like which can generate influences to polymerization reaction. The vinylidene chloride copolymer latex obtained by using the preparation method disclosed by the invention is favorable in storage stability, uniform in particle size distribution and strong in adhesive force; and a product coated by using the salt-fog-resistant vinylidene chloride copolymer latex is favorable in water resistance and salt fog resistance.

Description

technical field [0001] The invention relates to a vinylidene chloride copolymer latex and a preparation method thereof, in particular to a salt spray-resistant copolymer latex of vinylidene chloride, vinyl chloride, acrylate and acrylamide and a preparation method thereof. Background technique [0002] In 1932, DOW Chemical Company of the United States began the research on the polymerization of vinylidene chloride, but the softening temperature of vinylidene chloride homopolymer is very close to the decomposition temperature, and it is a crystalline polymer. In order to improve the softening temperature and crystallinity of vinylidene chloride homopolymer, copolymers containing vinyl chloride, acrylate, acrylonitrile, etc. have been successively obtained. In the 1950s, partial chlorine copolymer resins and latexes had their application reports. At that time, latex was mainly used for dip coating paper and coatings. [0003] At present, vinylidene chloride copolymer latex c...

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): C08F214/08C08F214/06C08F220/18C08F220/14C08F220/58C08F220/56C08F220/54C08F2/24C09D127/08
CPCC08F2/26C08F2/30C08F2/38C08F214/08C09D5/08C09D127/08C08F214/06C08F220/1808C08F220/58
Inventor 毛维鉴
Owner 河北昊泽化工有限公司
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