Supercharge Your Innovation With Domain-Expert AI Agents!

Microstructure-bearing articles of high refractive index

A technology of microstructure and products, applied in the direction of diffusion components, instruments, optical components, etc., can solve problems such as unfavorable physical properties

Inactive Publication Date: 2008-07-23
SABIC INNOVATIVE PLASTICS IP BV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymers of highly brominated monomers such as pentabromophenyl methacrylate have a refractive index of about 1.71, but such polymers sometimes have unfavorable physical properties

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
  • Microstructure-bearing articles of high refractive index

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A 3-necked flask equipped with an additional funnel, a temperature probe and a mechanical stirrer was charged with 31.2ml of 2,2,4-trimethylhexane 1,6-diisocyanate and 50mg of dilauric acid Dibutyltin ester. The additional funnel contained 39.75 g of warm polycaprolactone diol (Mn.530), which was added to the contents of the flask at 55-60°C. The mixture was then stirred at 65°C for 14 hours. Subsequently, the flask was cooled to 55°C, and a mixture of 18.7 ml of 2-hydroxyethyl methacrylate and 100 mg of hydroquinone monomethyl ether was added while maintaining the temperature in the range of 54-58°C. The mixture was stirred at 55°C for 10-12 hours until the completion of the reaction was confirmed by infrared spectroscopy analysis. This product is the desired oligomeric polyurethane dimethacrylate, sometimes referred to as "oligomer dimethacrylate" below.

Embodiment 2

[0040] 105 g of titanium tetraisopropoxide was added to a mixture of 1000 g of 2-propanol, 49.05 g of concentrated hydrochloric acid and 5.25 g of distilled water under stirring. After adding 0.23 g 33% 4-OH TEMPO solution dissolved in 1-methoxy-2-propanol and 13.75 g 3-methacryloxypropyltrimethoxysilane, the resulting mixture was stirred at room temperature 72 hours. After 447 g of the solution was transferred to a round bottom flask and most of the volatiles were stripped using a rotary evaporator, the solution was heated at 50°C for 6.5 hours. Add 140 g of propylene glycol methyl ether acetate and continue stripping at 55°C under full vacuum. The stripping was stopped when the weight of the solution was 171 g, and another 137 g of propylene glycol methyl ether acetate was added to the flask. The stripping is continued until the weight of the solution is 236g. Gravimetric analysis was performed by stripping all the volatiles to determine the solid content of the obtained titaniu...

Embodiment 3

[0042] 49.5 parts of the oligomeric polyester polyurethane diacrylate mixture is commercially available from Sartomer Co. under the trademark "CN-985B88", and is vacuum stripped to provide 50 parts of titanium in the amount of the product of Example 2, Add 0.5 part of "Darocur 4265" (as a 10% solution in 1-methoxy-2-propanol). The resulting composition was spin-coated from 1-methoxy-2-propanol onto a bisphenol A polycarbonate plaque and cured by exposure to ultraviolet radiation emitted by a single "H" bulb. The resulting coating has a haze value of 0.43%, an abrasion rate of 25.7, and an adhesion rate of 0B. It is expected that the adhesion can be improved by adding a smaller proportion of polyfunctional (meth)acrylate monomers, and the adhesion is determined according to simple experiments.

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
diameteraaaaaaaaaa
refractive indexaaaaaaaaaa
hazeaaaaaaaaaa
Login to View More

Abstract

Blends of oligomeric urethane multi(meth)acrylate; optionally at least one other monomer selected from the group consisting of acrylic monomers, styrenic monomers and ethylenically unsaturated nitrogen heterocycles, preferably a polyol multi(meth)acrylate; and nanoparticles of an ethylenically unsaturated, preferably (meth)acrylic-functionalized, titanium or zirconium compound can be cured by ultraviolet radiation in contact with a photoinitiator to produce optical resinous articles having high refractive indices, haze ratings of at most 5% and other properties which may be tailored according to the desired use.

Description

Technical field [0001] The present invention relates to replication with microstructured surfaces, and more specifically to resin-based compositions capable of such replication. Background technique [0002] The reproduction of the microstructure of the resin surface is very important in different technical fields, such as the manufacture of traffic signs, where reflectivity is provided by cube-corner embossed sheets; the production of Fresnel lens elements and flexible video discs; and Manufacturing of "brightness enhancement" or "light management" films (for simplicity, sometimes referred to as "LMF" below) for liquid crystal displays. In order to replicate the application, the resin is expected to have the most suitable physical properties, including basic transparency, a high glass transition temperature (Tg) sufficient to maintain the shape during storage and use, and adhesion that promotes (typically by molding) molding. Elasticity, and long-term shape retention, which incl...

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): G02B5/02G02B1/04C08K9/06C09D4/00C08F230/08C08G18/67C08G18/73C08K5/057C09D175/16
CPCC08G18/672C09D175/16C08K5/057C08G18/73C08F230/08G02B1/04C08F230/085C08G18/42C08L2666/54
Inventor 布雷特·J·奇泽姆丹尼斯·J·科伊尔詹姆斯·A·雷休
Owner SABIC INNOVATIVE PLASTICS IP BV
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