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

Photocurable composition and adhesive for electronic parts

A compound and thermal curing agent technology, applied in the direction of non-polymer organic compound adhesives, adhesives, adhesive types, etc., can solve problems such as damage to moisture resistance reliability, unusability, and liquid crystal contamination problems

Active Publication Date: 2022-04-19
NIPPON KAYAKU CO LTD
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in order for the thermal radical polymerization initiator to efficiently generate radicals, it must be a thermal radical polymerization initiator with a molecular weight small to some extent, but low-molecular-weight compounds are easily soluble in liquid crystals, and although they are excellent in reactivity, However, the contamination of liquid crystal by the thermal radical polymerization initiator itself becomes a problem
In addition, when polycarboxylic acid is used, there is a possibility that moisture resistance reliability may be impaired, and it may not be usable depending on the application.
[0007] As described above, although liquid crystal sealing agents have been actively developed, a liquid crystal sealing agent that has excellent light-shielding portion curing properties and low liquid crystal contamination has not yet been realized.

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
  • Photocurable composition and adhesive for electronic parts
  • Photocurable composition and adhesive for electronic parts
  • Photocurable composition and adhesive for electronic parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to an Example. In addition, unless otherwise stated, "%" here is a mass basis.

Synthetic example 1

[0128] [Synthesis of 2-acetylthioxanthone]

[0129]

[0130] 2-Acetylthioxanthone was synthesized according to the synthesis sequence described in the existing literature (Material Technology, Vol.27, No.6(2009), pp.242-251).

[0131] [Synthesis of TX-OXE (Compound No. 1)]

[0132]

[0133] A thermometer and a cooling tube were installed in a 200 mL four-neck reaction vessel, and nitrogen gas flow was started at a flow rate of 30 mL / min. 2-Acetylthioxanthone (0.50 g), hydroxylamine hydrochloride (0.20 g), and N,N-dimethylformamide (60 mL) were added to a reaction vessel, and reacted at 80° C. for 4 hours. After adding 50 mL of water to stop the reaction, extraction was performed with methyl isobutyl ketone (200 mL), and water washing was performed three times with 50 mL of water. The solvent was removed using an evaporator to obtain an oximate compound of 2-acetylthioxanthone (TX-OX / yellow solid). The yellow solid (crude crystal) obtained here was directly used for ox...

Embodiment 1

[0141]

[0142] The curable compounds (B-1, B-2, B-3) shown in the following Table 1 were mixed, heated at 90°C to dissolve the specific compound (A-1) shown in the following Table 1, and cooled until room temperature. Then, after adding and stirring the remaining components in the following Table 1, it was dispersed using a three-roll mill. Then, the photocurable compositions of Examples 1 and 2 were prepared by filtering with a metal sieve (635 mesh). In addition, the numerical value of each component in Table 1 shows a mass part.

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

No PUM Login to View More

Abstract

The present invention provides a photocurable composition, an adhesive for electronic components, an electronic component, an adhesive for a liquid crystal display unit, a liquid crystal sealing agent, and a liquid crystal display unit using the photocurable composition. The active composition contains: a compound having an oxime ester structure and a thioxanthone structure in the molecule.

Description

technical field [0001] The present invention relates to a photocurable composition, an adhesive for electronic components, an electronic component, an adhesive for a liquid crystal display unit, a liquid crystal sealing compound, and a liquid crystal display unit using the photocurable composition. Background technique [0002] The photocurable composition has been widely used in adhesives for electronic components such as a sealant for displays, a sealant for solar cells, and a semiconductor sealant. As a sealing compound for displays, the sealing compound for liquid crystal displays, the sealing compound for organic electroluminescence (EL) displays, the adhesive agent for touch panels, etc. are mentioned, for example. These sealants for displays are required to have excellent curability and to have less outgassing without damaging the display unit. [0003] However, since the photocurable composition does not undergo a curing reaction in a portion where light does not re...

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): C08F2/50C08K3/013C08K5/25C08K5/5419C08L33/04C08L101/00C09J4/00C09J11/04C09J11/06C09J163/00C09J201/00G02F1/1339
CPCC08F2/50C08K3/013C08K5/25C08K5/5419C08L33/04C08L101/00C09J4/00C09J11/04C09J11/06C09J163/00C09J201/00G02F1/1339
Inventor 远岛隆行
Owner NIPPON KAYAKU 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