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

Photochromic interlayer film, light-transmitting laminate, and camera system for automobiles

A technology of photochromic and photochromic dyes, applied in the field of interlayer films for light-transmitting laminates, can solve the problems of complex manufacturing process, weakened discoloration effect, weak weather resistance, etc., and achieve the effect of maintaining impact resistance

Active Publication Date: 2021-11-02
爱思开迈克沃有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photochromic material required for the manufacture of such color-changing glass has a problem of weakening the color-changing effect when used for outdoor use due to weak weather resistance, and it is difficult to be suitable for mass production because the manufacturing process is too complicated
In particular, applications are limited in difficult-to-replace building materials or car openings

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
  • Photochromic interlayer film, light-transmitting laminate, and camera system for automobiles
  • Photochromic interlayer film, light-transmitting laminate, and camera system for automobiles
  • Photochromic interlayer film, light-transmitting laminate, and camera system for automobiles

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0166] The preparation method of the intermediate film may be a method of putting each of the above-mentioned components into an extruder, performing melt extrusion, and co-extruding through a feed block, but the present invention is not limited thereto.

[0167] A light-transmitting laminate according to another embodiment of the present invention has a first light-transmitting layer, a second light-transmitting layer, and the above-described intermediate layer between the first light-transmitting layer and the second light-transmitting layer. membrane.

[0168] The first light-transmitting layer and the second light-transmitting layer may be light-transmitting glass or light-transmitting plastic, respectively.

[0169]The translucent laminate may have a visible light transmittance of 70% or more before color change due to the photochromic layer, and may have a visible light transmittance of 10% to 60% after color change. The above features make the visibility through the tr...

experiment example 1

[0198] 1) Manufacture of full-surface photochromic interlayer film

[0199] The composition that will be used to prepare single-layer photochromic intermediate film is put into twin-screw (Twin Screw) extruder (manufacturer: SM Platec) with the composition shown in following Table 1 and is extruded, to obtain Figure 1A The interlayer film samples of the structure (each with a thickness of 800 μm).

[0200] Table I

[0201]

[0202]

[0203] 2) Evaluation of the physical properties of the entire photochromic interlayer film

[0204] After manufacturing a laminated glass in which the coextruded polyvinyl acetal films laminated with the full-surface photochromic interlayer films manufactured in the samples 1 to 10 described above, the following physical properties were evaluated.

[0205] Color measurement for color development / decolorization

[0206] In a laminator at a temperature of 130°C, 2.1T (mm, the same below) thickness glass of 70 mm × 70 mm and each sample manu...

experiment example 2

[0227] 1) Preparation of intermediate film of photochromic sunshade belt

[0228] The composition of layer A and the composition of layer C below were melt-extruded using two twin-screw extruders (manufacturer: SM Platech) and a feed block for co-extrusion to form a film.

[0229] Layer A: a composition comprising 70wt% of the first polyvinyl acetal resin, 29wt% of the plasticizer and 1wt% of the first ultraviolet absorber

[0230] Layer C: a composition comprising 72.79wt% of a first polyvinyl acetal resin, 26.96wt% of a plasticizer, 0.15wt% of a first ultraviolet absorber and 0.10wt% of a photochromic dye

[0231] The extruded film is a co-extrusion structure laminated by feed blocks into a film, and the layer structure is laminated in the form of A / C / A, and the C layer is only present in a part of the PVB film with a width of 200mm and a width of 1580mm ( refer to Figure 4A part). This type of sheet was formed through a die of an extruder, cooled in a casting roll (Cast...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to View More

Abstract

The present invention relates to an interlayer film for a light-transmitting laminate, a light-transmitting laminate, and an imaging system for automobiles. The intermediate film for a light-transmitting laminate has a photochromic layer on part or all of its entire surface, and the photochromic layer contains polyvinyl acetal resin, a plasticizer, and a photochromic dye, wherein the The intermediate film contains an ultraviolet absorber that does not have a peak in a region of 315 nm to less than 325 nm and a region of 360 nm to less than 365 nm in an absorption spectrum. The photochromic interlayer film, light-transmitting laminate, etc. of the present invention can satisfy mechanical properties such as penetration resistance and impact resistance suitable for automobile glass and maintain photochromic properties for a relatively long time, so they can be used for car windows, Building materials, etc., are widely used.

Description

technical field [0001] The present invention relates to an interlayer film for a light-transmitting laminate having photochromic properties, a light-transmitting laminate including the same, and an automotive imaging system, and relates to an interlayer film having photochromic properties and excellent physical properties for use in lamination of automotive glass intermediate film, etc. Background technique [0002] The phenomenon of changing color in response to specific light is called photochromic, and the material that causes this photochromic is called photochromic material (Photochromic, photoreversible color compound or photochromic compound). [0003] Photochromic compounds are broadly classified into pigment form and dye form or inorganic form and organic form. Photochromic compounds in solution or dispersion form change from colorless to a specific color when exposed to sunlight or ultraviolet light, and return to their original color when placed in the dark or wi...

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): B32B27/06B32B27/18B32B27/20B32B27/22B32B27/30B32B17/10B32B33/00C08K5/103C08K5/3475C08L29/14B60R1/00H04N5/225
CPCB32B27/08B32B27/18B32B27/20B32B27/22B32B27/306B32B33/00C08K5/103C08K5/3475B60R1/00B32B2250/24B32B2250/40B32B2307/102B32B2307/40B32B2307/712B32B2307/71B32B2307/558B60R2300/10H04N23/57C08L29/14
Inventor 郑盛真尹仁洙金惠珍金兴植延济源李学守
Owner 爱思开迈克沃有限公司
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