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Optically-transparent dual-curing adhesive

An optically transparent, adhesive technology, applied in the direction of adhesive types, non-polymer organic compound adhesives, ester copolymer adhesives, etc., can solve the corrosion of unbonded parts, and the adhesive cannot be fully cured , peeling, etc.

Inactive Publication Date: 2013-02-13
HENKEL KGAA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the various dual-curing adhesives described above cannot be used to solve the problem to be solved in the present invention, that is, when there is a shadow, that is, a part where light cannot pass through, between the touch screen of an electronic product and the substrate, It will encounter the situation that the adhesive cannot be fully cured due to the impermeability of ultraviolet light, and the corresponding problems of corrosion, aging fatigue or bond peeling of the unbonded part

Method used

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  • Optically-transparent dual-curing adhesive

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0102]

[0103] The adhesive composition of the present invention can be prepared by adding and mixing the components of the adhesive composition described above in set proportions in a substantially light-proof mixing vessel with conventional stirring means. Mixing is usually carried out at ambient temperature, but may also be carried out at a temperature slightly higher or lower than ambient temperature. The mixing should be carried out for a period of time long enough to obtain a homogeneous combination of the components, thereby obtaining the adhesive composition. The thus obtained adhesive composition is stored away from light; it is used for subsequent bonding between the touch screen of the optoelectronic product and the substrate.

[0104] The volume of the mixing container is not specifically limited, and it may be, for example, about 1-100 L, or 5-50 L, or 10-30 L, etc. according to specific preparation requirements. The mixing vessel can be a commercially availab...

Embodiment 1

[0138] Embodiment 1 (according to the present invention)

[0139] Adhesive composition 1 was prepared according to the composition and preparation method of the following table 1:

[0140] Table 1

[0141] components

Content

Urethane oligomers 1-1 containing (meth)acryloyloxy groups

70 parts by weight

(Meth)acrylate 4-1

10 parts by weight

(meth)acrylate 4-2

7 parts by weight

(meth)acrylate 4-3

7 parts by weight

UV photoinitiator 5-1

2 parts by weight

UV photoinitiator 5-2

1 part by weight

Thermal Initiator 6-1

2 parts by weight

Thermal Initiator 6-2

1 part by weight

[0142] The preparation method of adhesive composition is as follows:

[0143] Under the condition of avoiding light, the above-mentioned components (total 100g) were added successively in the plastic barrel with a capacity of 150g, and put into the SpeedMixer produced by FlackTech Inc. TM In the mixer, at...

Embodiment 2

[0144] Embodiment 2 (according to the present invention)

[0145] Adhesive composition 2 is prepared according to the composition of the following table 2 and the preparation method as in Example 1:

[0146] Table 2

[0147] components

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PUM

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Abstract

The invention relates to an optically-transparent dual-curing adhesive, and a preparation method and a use thereof, and concretely relates to an optically-transparent, ultraviolet-curable and heat-curable adhesive, for example, the adhesive can be used for bonding the touch screen and the substrate of an electronic product.

Description

technical field [0001] The present invention relates to an optically transparent dual-cure adhesive, as well as a preparation method and use of the dual-cure adhesive. More specifically, the present invention relates to an optically clear adhesive capable of both UV curing and heat curing, which can be used, for example, for bonding touch screens and substrates of electronic products. Background technique [0002] Since the UV-curable (hereinafter referred to as: UV-curable) adhesive was reported in the 1960s, a lot of research has been done on it and remarkable achievements have been made. The UV light-curing adhesive refers to an adhesive that can be cured rapidly under ultraviolet light irradiation. Today, UV light-curing adhesives have been successfully applied in many industrial assembly fields, especially those that require rapid assembly, such as liquid crystal display (LCD) manufacturing, optical product manufacturing such as cameras, optical disc manufacturing, wat...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J4/06G02F1/133
CPCC09J133/08C08F283/008C09J4/06C09J109/00C09J175/04C09J175/14C08F222/1065C08F220/1811C08F220/20C08F220/281C09J133/06C09J133/14C09J175/16
Inventor 张瑞吕道强
Owner HENKEL KGAA
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