Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical film and method for producing optical film

A manufacturing method and optical film technology, which is applied in the field of optical films, can solve the problems of increased haze of optical films, and achieve the effects of low haze, excellent crack resistance and adhesion

Active Publication Date: 2019-07-16
KONICA MINOLTA INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if there are many such agglomerated secondary particles, the problem that the haze of the optical film increases

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
  • Optical film and method for producing optical film
  • Optical film and method for producing optical film
  • Optical film and method for producing optical film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0198] The "aqueous solvent" used for preparation of the said optical function layer coating liquid means the solvent which consists of water in 50 mass % or more of components. Of course, 100% by mass pure water not containing other solvents may be used, but in consideration of the dispersion stability of vanadium dioxide-containing microparticles, it is preferable that the content of other organic solvents is small. The solvent constituting the water-based solvent and components other than water are not particularly limited as long as they are compatible with water. Alcohol-based solvents can be preferably used, and isopropanol having a boiling point relatively close to water is preferable among them.

[0199] The wet coating method used in the formation of the above-mentioned optical function layer is not particularly limited, for example, roll coating method, bar coating method, air knife coating method, spray coating method, slide type curtain coating method, or U.S. Paten...

Embodiment

[0350] Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples. In addition, in an Example, the expression "part" or "%" is used, and unless otherwise indicated, it means "part by mass" or "% by mass".

[0351] "Optical film production"

[0352] [Production of Optical Film 101]

[0353] (Preparation of fine particle dispersion liquid 1 containing vanadium dioxide: with particle drying process)

[0354] Ammonium vanadate (NH 4 VO 3 , Wako Pure Chemical Industries, Ltd., special grade) 0.433g, and then slowly drop hydrazine hydrate (N 2 h 4 ·H 2 (0, Wako Pure Chemical Industries, Ltd., special grade) 5% by mass aqueous solution, and a solution 1 having a pH of 9.2 at 23° C. and 55% RH was prepared. The prepared solution 1 was charged into a commercially available autoclave for hydrothermal reaction treatment (Hu-25 type manufactured by Sanai Scientific Co., Ltd., with a Teflon (registered tra...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

An object of the present invention is to provide an optical film having thermochromic properties capable of adjusting the near-infrared shielding rate according to the temperature environment, low haze, and excellent crack resistance and adhesion even in long-term use, and a method for producing the same. The optical film of the present invention is an optical film having an optical function layer on a transparent substrate, and the optical function layer at least contains: microparticles containing vanadium dioxide and a binder resin, and is characterized in that the above-mentioned The vanadium dioxide-containing microparticles have a number average particle diameter of all particles including primary particles and secondary particles of less than 200 nm.

Description

technical field [0001] The present invention relates to an optical film for near-infrared light shielding and a manufacturing method thereof. In more detail, it is related with the optical film which has thermal discoloration, low haze, crack resistance, and excellent adhesiveness, and its manufacturing method. Background technique [0002] In recent years, in automobiles, buildings, etc., heat-insulating glass that shields the skin from the heat felt by the outside light (sunlight) entering through the window and has high heat insulation or heat shielding properties has been on the market. circulation. Recently, with the popularization of electric vehicles and the like, the development of near-infrared light (heat ray) shielding films has been actively carried out from the viewpoint of improving the cooling efficiency of the vehicle interior. [0003] Near-infrared light-shielding films can reduce the load on air-conditioning equipment such as air conditioners in cars by ...

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): G02B5/22B32B23/08B32B23/22B32B27/18B32B27/30C09D5/32C09D7/61C09D101/00C09D129/04G02B5/26G02B5/28
Inventor 小山博和
Owner KONICA MINOLTA INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com