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

Polymer particle and method for producing the same

A manufacturing method and polymer technology, which can be used in instruments, optics, optical components, etc., can solve the problems of no hydrophilic part, inability to fully aggregate, difficult to achieve high haze of anti-glare film, etc., to avoid hydrophobicity. Too high, excellent optical properties, the effect of promoting dissolution

Active Publication Date: 2017-10-10
SEKISUI PLASTICS CO LTD
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Conventional polymer particles for general anti-glare films tend to be well dispersed in the coating film, so they cannot be aggregated sufficiently
The fine particles disclosed in Patent Document 1 are also composed of an organic polymer skeleton polymerized from a hydrophobic polymerizable monomer such as styrene and a polysiloxane skeleton. Tendency to disperse well and thus fail to condense sufficiently
When the light-diffusing polymer particles disclosed in Patent Document 2 also use benzyl (meth)acrylate as a main component (Examples 2 and 3), since they do not have hydrophilic sites, they are well dispersed in the coating film. tendency to fully condense
[0011] Since the microparticles disclosed in Patent Document 1 must contain a polysiloxane skeleton with a low refractive index, it is difficult to increase the refractive index of the microparticles, and when used as a filler for an antiglare film, it may be difficult to achieve the desired effect of the antiglare film. High haze

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
  • Polymer particle and method for producing the same
  • Polymer particle and method for producing the same
  • Polymer particle and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0099] Hereinafter, the present invention will be described by way of examples and comparative examples, but the present invention is not limited thereto. First, methods for measuring the composition and characteristics of polymer particles in the following Examples and Comparative Examples will be described.

[0100] [Measuring method of volume average particle diameter and coefficient of variation of particle diameter of polymer particles]

[0101] The volume average particle diameter of the polymer particles was measured with a Coulter Counter III (a measuring device manufactured by Beckman Coulter, Inc.). The measurement was carried out using the pore diameter calibrated in the user's manual of Multisizer™ 3 issued by Beckman Coulter, Inc.

[0102] In addition, the pore diameter used for the measurement is appropriately selected according to the size of the particle to be measured. When selecting an aperture having a size of 50 μm, the current (aperture current) was set ...

manufacture example 1

[0206] First, in a reaction vessel equipped with a stirrer, a thermometer, and a reflux condenser, 3240 g of ion-exchanged water as an aqueous medium was added, and then 5.6 g of n-octyl mercaptan as a molecular weight modifier was dissolved in a non-crosslinking ( A solution in 560 g of methyl methacrylate (hereinafter, abbreviated as "MMA") of a meth)acrylic monomer. Then, while stirring the contents of the reaction vessel in a nitrogen stream, the temperature was raised to 70° C., and an aqueous potassium persulfate solution obtained by dissolving 2.8 g of potassium persulfate as a polymerization initiator in 100 g of ion-exchanged water as an aqueous medium was charged. , and stirred at 70° C. for 12 hours to carry out a polymerization reaction. Thus, a dispersion liquid of polymethyl methacrylate (PMMA) particles (hereinafter referred to as "seed particle dispersion liquid 1") as seed particles was obtained.

[0207] The seed particle dispersion 1 contained 14.3% by weig...

manufacture example 2

[0209] First, in a reaction vessel equipped with a stirrer, a thermometer, and a reflux condenser, 3320 g of ion-exchanged water as an aqueous medium was added, and then 3.6 g of n-octyl mercaptan as a molecular weight modifier was dissolved in a non-crosslinking ( 250 g of the seed particle dispersion 1 obtained in the production example 1 of the seed particle was further added to the solution formed in MMA360g of the meth)acrylic monomer. Then, while stirring the contents of the reaction vessel in a nitrogen stream, the temperature was raised to 70° C. in a nitrogen stream, and 1.8 g of potassium persulfate as a polymerization initiator was dissolved in 100 g of ion-exchanged water as an aqueous medium. The potassium persulfate aqueous solution was stirred at 70° C. for 3 hours to perform a polymerization reaction, and then stirred at 100° C. for 3 hours to perform a polymerization reaction. Thus, a dispersion liquid of polymethyl methacrylate (PMMA) particles (hereinafter r...

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
Curie pointaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

The present invention provides a polymer particle and a method for producing the same, and a coating agent and an antiglare film using the polymer particles, wherein the polymer particles are highly refractive index and are manufactured at the time of manufacture of an optical member such as a glare film and a light diffusion film And the like can be sufficiently condensed in the coating film when dispersed and coated in the dispersion medium. The polymer particles are polymer particles composed of a polymer of a vinyl-based monomer, 50 to 99.5% by weight of a structural unit derived from a non-crosslinkable vinyl-based monomer, and a polymer derived from a crosslinkable vinyl-based monomer By weight of a structural unit of from 0.5 to 50% by weight, comprising 50 to 99.5% by weight of a structural unit derived from a vinyl-based monomer having an aryl group and containing a structural unit derived from a vinyl-based monomer having a carboxyl group.

Description

technical field [0001] The present invention relates to polymer particles that can be suitably used as fillers added to optical parts such as anti-glare films and light-diffusing films, and their production methods and uses (coating agents and optical parts). Background technique [0002] Polymer particles are used in a wide range of fields such as spacers for liquid crystals, fillers for chromatography, and diagnostic reagents. Moreover, it is also used in various device fields, such as a display device, as an optical member, such as a light-diffusion plate, a light-diffusion film, and an antiglare film. [0003] The anti-glare film is arranged on the screen of a display such as a personal computer (PC) monitor or a television monitor, and prevents reflection (specular reflection) of external light on the screen of the display. In this type of anti-glare film in which polymer particles are added as fillers, the polymer particles generally form fine irregularities on the su...

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): C08F212/08C08F220/06C08F222/14C08F222/02G02B1/111G02B1/04
CPCC08F212/08G02B1/04G02B1/111C08F220/06C08F222/102C08F222/02
Inventor 山口阳平原田良祐
Owner SEKISUI PLASTICS CO LTD
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