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UV semi-curing OCA (optical clear adhesive) and use thereof

A semi-curing and ultraviolet light technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problem of soft-to-soft bonding between touch modules and display modules, and OCA Glue overflow problem, low initial viscosity, etc.

Inactive Publication Date: 2018-12-11
江苏科琪高分子材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent document with the patent publication number CN106916538A discloses an OCA optical glue for bonding the frame of a mobile phone. Suitable for soft-to-soft lamination between flexible curly touch module and display module
[0005] Publication (Announcement) No.: CN106883796A discloses a mobile phone glass screen protective film OCA optical glue, which is made by reacting the following substances in mass percentage: 50-90% aliphatic polyurethane acrylate, methacrylic acid 1-20% of isobornyl ester, 1-20% of isooctyl acrylate, 1-20% of hydroxypropyl methacrylate, 0.1-10% of initiator, add the above components into the stirring tank according to the mass percentage, avoid light After mixing and stirring evenly under the same conditions, let it stand for defoaming to make glue, then apply the glue on the PET release film, apply it with a scraper or a coating machine, attach the release PET film, and then cure it by UV to obtain OCA optical glue but can't solve the problem of OCA glue overflow

Method used

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  • UV semi-curing OCA (optical clear adhesive) and use thereof
  • UV semi-curing OCA (optical clear adhesive) and use thereof
  • UV semi-curing OCA (optical clear adhesive) and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Prepare adhesive composition according to following formula:

[0049] 47.0 parts Dymax Corporation BR3641AJ;

[0050] 20.0 parts of Sartomer SR506, isobornyl acrylate;

[0051] 27.35 parts of 2-EHA, isooctyl acrylate from Osaka Organic Chemicals;

[0052] 3.2 parts Osaka Organic 2-HEA, Hydroxyethyl Acrylate

[0053] 0.35 parts BASF Irganox 1726 as antioxidant

[0054] 0.1 part BYK 088

[0055] 0.4 parts Omnirad TPO, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide

[0056] 1.6 parts Omnirad 651: Benzoin Dimethyl Ether

[0057] All parts are parts by weight, based on 100 parts by weight of the adhesive composition;

[0058] Specific preparation method:

[0059] The above-mentioned components (total 100g) are successively added into a plastic bucket with a capacity of 150g, and put into the SpeedMixer produced by FlackTech Inc. TM In the mixer, at 2500 rpm, disperse and mix at high speed for 10 minutes.

Embodiment 2

[0061] 50.0 copies of Rahn AG UA 12-109;

[0062] 17.0 parts of Sartomer SR506, isobornyl acrylate;

[0063] 27.35 parts of 2-EHA, isooctyl acrylate from Osaka Organic Chemicals;

[0064] 3.2 parts Osaka Organic 2-HEA, Hydroxyethyl Acrylate

[0065] 0.35 parts BASF Irganox 1726 as antioxidant

[0066] 0.1 part BYK 088

[0067] 0.4 parts Omnirad TPO, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide

[0068] 1.6 parts Omnirad MBF, methyl benzoylformate

[0069] All parts are parts by weight, based on 100 parts by weight of the adhesive composition;

[0070] Specific preparation method:

[0071] The above-mentioned components (total 100g) are successively added into a plastic bucket with a capacity of 150g, and put into the SpeedMixer produced by FlackTech Inc. TM In the mixer, at 2500 rpm, disperse and mix at high speed for 10 minutes.

Embodiment 3

[0073] Prepare adhesive composition according to following formula:

[0074] 69.6 copies of Etercure 61360 from Changxing Chemical Company;

[0075] 12.1 parts of Sartomer SR506, isobornyl acrylate;

[0076] 12.1 parts of Sartomer 395 NS from Sartomer Company, isodecyl acrylate;

[0077] 3.55 parts Osaka Organic 4-HBA, 4-Hydroxybutyl Acrylate

[0078] 0.35 parts BASF Irganox 1726 as antioxidant

[0079] 0.1 part BYK 088

[0080] 0.4 parts Omnirad TPO, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide

[0081] 1.8 parts Omnirad MBF, methyl benzoylformate

[0082] All parts are parts by weight, based on 100 parts by weight of the adhesive composition;

[0083] Specific preparation method:

[0084] The above-mentioned components (total 100g) are successively added into a plastic bucket with a capacity of 150g, and put into the SpeedMixer produced by FlackTech Inc. TM In the mixer, at 2500 rpm, disperse and mix at high speed for 10 minutes.

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Abstract

The invention relates to a UV-curing adhesive composition. Based on 100 parts by weight of the adhesive composition, the composition mainly comprises a component A, namely 30-70 parts of one or more of polyurethane (methyl) acrylate polymers, a component B, namely 15-50 parts of one or more of monofunctional acrylate monomers which at least include a soft monomer with the glass transition temperature lower than 20 DEG C, a component C, namely 2-20 parts of one or more of hydroxy-containing functional (methyl) acrylate monomers, a component D, namely 0.02-1.0 part of a foaming agent, a component E, namely 0.3-5 parts of two or more of pyrolytic photoinitiators, and a component F, namely 0.10-3.0 parts of an antioxidant. One or more of difunctional or trifunctional acrylate monomers can be added into the composition as a crosslinking agent, plasticizer or silane coupling agent according to needs so as to improve the release force and cohesive force of glue, and the composition can be used in preparation of a UV semi-curing (secondary curing) optical film.

Description

technical field [0001] The invention relates to the technical field of light-curable adhesive compositions, in particular to ultraviolet semi-cured OCA optical adhesives and applications thereof. Background technique [0002] The development of touch technology has greatly promoted the electronics industry and has become a hot spot today. At present, wearable devices such as wristbands and smart watches are developing rapidly, and the touch module layer and layer and between the touch module and the display module still adopt the full lamination method of non-flexible curling in the past, such as OCA (Optical Tape), LOCA (Liquid Optical Adhesive) or double-sided adhesive bonding used in smartphones and tablets. OCA and double-sided adhesive are fully cured optical films, which are bonded to the substrate through physical action. OCA or double-sided adhesive is prone to cracking, creases and other problems under the condition of repeated curling. The elastic modulus is gene...

Claims

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Application Information

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IPC IPC(8): C09J175/14
CPCC09J175/14
Inventor 王洪宇朱功贤蘧建星
Owner 江苏科琪高分子材料研究院有限公司
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