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Use of a photosensitive resin composition as LED curable OCA

A technology of photosensitive resin and composition, applied in epoxy resin glue, non-polymer organic compound adhesive, adhesive type and other directions, can solve the problems of large volume shrinkage and so on

Active Publication Date: 2021-04-27
CHANGZHOU TRONLY ADVANCED ELECTRONICS MATERIALS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, most of the current light-curing OCA is a free radical curing system, which has a large volume shrinkage during curing and will cause serious stress effects. Therefore, a cationic curing system or a free radical-cation hybrid curing system needs to be developed

Method used

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  • Use of a photosensitive resin composition as LED curable OCA
  • Use of a photosensitive resin composition as LED curable OCA
  • Use of a photosensitive resin composition as LED curable OCA

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Embodiment Construction

[0060] The present invention will be further described in detail in conjunction with the following examples, but it should not be construed as limiting the protection scope of the present invention.

[0061] 1. Preparation of LED curable OCA

[0062] With reference to the formula shown in Examples 1-8 in Table 1, the raw materials can be mixed evenly. Unless otherwise stated, parts are parts by mass.

[0063] Table 1

[0064]

[0065]

[0066] The meaning of each component code in Table 1 is as follows.

[0067] A-1:

[0068] A-2:

[0069] B-1: Aliphatic polyurethane acrylate (6112-100, Changxing Chemical);

[0070] B-2: polybutadiene acrylate (CN301, Sartomer Chemical);

[0071] B-3: bisphenol A epoxy resin (E-51, Star New Materials);

[0072] B-4:

[0073] C-1: Propylene glycol diacrylate (EM223, Changxing Chemical);

[0074] C-2: Aliphatic epoxy resin (TTA21, Tetel);

[0075] D-1: 1-hydroxy-cyclohexyl-benzophenone (photoinitiator 184);

[0076] D-2: 4...

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Abstract

The invention discloses the use of a photosensitive resin composition as an LED-curable OCA. The composition comprises an anthracene ester sensitizer, a photocurable oligomer, a monomer for viscosity adjustment, and a photoinitiator. Through component adjustment, it can be applied to free radical, cationic or hybrid curing systems, all of which have good LED curing properties, low cost, good adhesiveness when used as OCA, flexible and controllable adhesive layer thickness, and transparent adhesive film after curing Excellent performance and yellowing resistance.

Description

technical field [0001] The invention belongs to the field of photocurable adhesives, and in particular relates to the use of a photosensitive resin composition as an LED-curable optically transparent adhesive (OCA). Background technique [0002] Optically Clear Adhesive (OCA) is a special adhesive used to glue transparent optical components and is one of the key raw materials in capacitive touch screen technology. As touch screens become more common, the use of OCAs has exploded. Curable adhesives for bonding capacitive touch screens are mainly used for bonding lenses and sensors in touch screens, as well as bonding touch screen panels and displays, which must meet certain requirements, such as: colorless, transparent, light transmittance More than 90%, resistance to damp heat aging, yellowing resistance, harmless to human body or low toxicity, etc. At present, the technology of OCA is mainly in the hands of several multinational companies such as 3M, Sony, Nippon Kayaku, ...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J4/02C09J4/06C09J163/00C09J7/10C09J7/30
CPCC08L2205/025C09J4/06C09J7/00C09J163/00C09J175/14C08L63/00
Inventor 钱晓春胡春青金晓蓓
Owner CHANGZHOU TRONLY ADVANCED ELECTRONICS MATERIALS CO LTD
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