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

Vinylidene-fluoride-based polymer composition obtained using non-fluorinated surfactant and production method therefor

A surfactant and vinylidene fluoride technology, applied in battery pack parts, structural parts, electrical components, etc., can solve problems such as restricting the use of fluorinated surfactants, achieve good polymerization stability, and is not easy to foam , the effect of high yield

Active Publication Date: 2021-10-08
KUREHA KAGAKU KOGYO KK
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from an environmental point of view, there is a tendency to limit the use of fluorinated surfactants, and surfactants that do not contain fluorine atoms are required.

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
  • Vinylidene-fluoride-based polymer composition obtained using non-fluorinated surfactant and production method therefor
  • Vinylidene-fluoride-based polymer composition obtained using non-fluorinated surfactant and production method therefor
  • Vinylidene-fluoride-based polymer composition obtained using non-fluorinated surfactant and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] 380 parts by mass of ion-exchanged water were put into the autoclave, and nitrogen bubbling was performed for 30 minutes to deaerate. Next, 0.25 parts by mass of disodium hydrogen phosphate and EMULGEN (trade name; manufactured by Kao Corporation. The same applies hereinafter) LS-1100.0019 parts by mass were charged, pressurized to 6.5 MPa, and replaced with nitrogen three times. Then, 0.2 mass parts of ethyl acetate, 28 mass parts of vinylidene fluoride (VDF), and 7 mass parts of hexafluoropropylene (HFP) were added to the said autoclave. While stirring, the temperature was raised to 80°C. Then, a 5% by mass aqueous solution of ammonium persulfate was added so that the amount of ammonium persulfate became 0.1 parts by mass, and polymerization was initiated. The pressure inside the kettle at this time was set at 2.5 to 5 MPa. After the start of the reaction, when the pressure in the tank dropped to 2.5 MPa, 65 parts by mass of VDF was continuously added so that the pr...

Embodiment 2

[0157] Except having changed the quantity of EMULGEN LS-110 into 0.003 mass part from 0.0019 mass part, it superposed|polymerized similarly to Example 1, and obtained the latex. The solid content concentration of the obtained latex was 19.2 mass %.

Embodiment 3

[0159] Except having changed the quantity of MMM into 0 mass part from 0.06 mass part, it superposed|polymerized similarly to Example 2, and obtained the latex. The solid content concentration of the obtained latex was 20.0 mass %.

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 sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

Provided are: a vinylidene-fluoride-based polymer composition which is less apt to lather at time of use and hence has satisfactory handleability and which contains no fluorinated surfactant; and a method for producing a vinylidene-fluoride-based polymer by which the vinylidene-fluoride-based polymer can be obtained in high yield while maintaining satisfactory polymerization stability without using any fluorinated surfactant.The vinylidene-fluoride-based polymer composition according to the present invention comprises a vinylidene-fluoride-based polymer and a specific surfactant and contains no fluorinated surfactant, wherein the specific surfactant is contained in an amount of 10 ppm or larger but less than 100 ppm in terms of mass ppm of the solid components of the composition and has an HLB value of 10 or greater. The method for producing a vinylidene-fluoride-based polymer according to the present invention comprises emulsion-polymerizing specific monomers in an aqueous medium in the presence of a specific emulsifier and an initiator without using any fluorinated surfactant, the use amount of the emulsifier being 8.5 ppm or larger but less than 100 ppm in terms of mass ppm of the monomers.

Description

technical field [0001] The present invention relates to a vinylidene fluoride polymer composition using a non-fluorinated surfactant and a method for producing the same. Background technique [0002] Suspension polymerization, emulsion polymerization, soap-free emulsion polymerization, mini-emulsion polymerization, seed emulsion polymerization, and solution polymerization are known as methods for producing vinylidene fluoride-based polymer particles using vinylidene fluoride as a main raw material. Among them, emulsion polymerization is to mix a medium such as water, a monomer that is hardly soluble in the medium, and an emulsifier (surfactant), and add a polymerization initiator that can dissolve in the medium to carry out a polymerization reaction, thereby obtaining polymer particles. Polymerization of Latex Dispersed in Medium. If the emulsifier is not suitable at this time, the polymer particles will coagulate during the polymerization reaction or after the polymerizati...

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): C08L27/16C08L53/00C08L71/02
CPCC08L27/16C08L71/02C08G2650/58C08F14/22C08F214/22C08F214/225H01M4/623H01M50/426H01M50/449H01M4/525C08F2/30C08F214/28C08F222/16C08F220/06C08F220/283
Inventor 四家彩长泽善幸铃木康弘
Owner KUREHA KAGAKU KOGYO KK
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