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Acrylic acid series adhesive component and uses thereof

An acrylic and composition technology, which is applied in the directions of adhesive additives, non-polymer organic compound adhesives, non-polymer adhesive additives, etc. Reworkability and other issues, to achieve good light penetration, avoid bubble generation, and reduce the effect of stage difference

Active Publication Date: 2012-04-18
ETERNAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, optical adhesive is a kind of pressure-sensitive adhesive, the main component is acrylic polymer, and it is commonly used in the processing of soft board to hard board (roller to film); Therefore, when the existing optical adhesive is used for bonding, the laminates cannot be tightly bonded, and air bubbles are likely to occur. lead to lower process yield
[0005] In addition, the main components of water glue currently used in the industry are acrylic oligomers and / or monomers. It has low viscosity before curing, can be processed quickly by light curing, and has rework properties (ie , after the lamination is completed, the adhesive film can be torn off and reused), therefore, it is mainly used in the processing of hard board to hard board; however, the problem often faced when using existing water glue for lamination is that the water after curing The increase of the hardness of the glue makes the elasticity insufficient, which will reduce the reworkability. If the reworkability is improved, the amount of glue remaining on the optical laminate will also increase.

Method used

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  • Acrylic acid series adhesive component and uses thereof
  • Acrylic acid series adhesive component and uses thereof
  • Acrylic acid series adhesive component and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Prepare the acrylate oligomer (a1) of 100 parts by weight, the acrylate monomer (b1) of 59.1 parts by weight, the plasticizer (d1) of 16.2 parts by weight, and the crosslinking agent (e1) of 6.8 parts by weight, heating Stir to 70°C to make it evenly mixed, remove the heat source and keep stirring to cool to room temperature, then mix with 9.7 parts by weight of photoinitiator (c1) to form the adhesive composition of Example 1.

[0084] The obtained adhesive composition was coated on an optical glass (first substrate) with a thickness of 0.7 mm by a roller to form a coating, and then the first substrate with the above coating was bonded to an optical glass with a frame ( second substrate), and then exposed three times with a UV exposure machine (model: F300S+AJ-6-UVL; UV light source: AJM-07 / UVICURE Plus II) at a linear speed of 4 m / min (exposure energy approx. 1086 mJ / cm2). Then, cut it into a size of 5 cm X 5 cm with a cutter to form an optical laminate.

Embodiment 2 to 6

[0086] The adhesive compositions of Examples 2 to 6 were prepared according to the components and parts by weight shown in Table 1, respectively. The manufacturing method of the adhesive composition and the method of forming an optical laminate are as described in Example 1.

Embodiment 7

[0088] Mix and prepare 100 parts by weight of hydroxyl-containing acrylate polymer (a2), the acrylate monomer (b2) of 4.9 parts by weight, the photoinitiator (c1) of 0.3 parts by weight, the plasticizer of 16.2 parts by weight at room temperature (d1), and 0.6 parts by weight of crosslinking agent (e2), and then added toluene / ethyl acetate (weight ratio 1:2) solvent to form the adhesive composition of Example 7 with a solid content (NV) of 28%.

[0089] The resulting adhesive composition was coated on a PET release film (Higashiyama, Japan; model: HY-TS12 / 50 microns) with a line coating rod (KODAIRA; model: YBA3; the adjustment scale was 3), and the coated Put the PET base material in an oven at 120°C to dry for 2 minutes, take it out and put it into a UV exposure machine (model: F300S+AJ-6-UVL; UV light source: AJM-07 / UVICURE Plus II), at a line speed of 4 meters Expose once per minute (exposure energy is about 362 millijoules / cm2), and then cover with a release film (Higashi...

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PUM

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Abstract

The invention relates to an acrylic acid series adhesive component and the uses thereof. The component includes: (a) at least one acrylic acid series oligomer containing unsaturated group, acrylic acid series polymer containing one, two, or three kinds of hydroxyl group, amido group, and carboxylic acid group, or a mixture of acrylic acid series oligomer and acrylic acid series polymer; (b) optical monomer; (c) optical initiator; (d) plasticizer which includes compounds in formula (I) or (II). The component can be used as the adhesive of the optical laminated board, can effectively reduce the sectional difference and avoid bubble generation. The component has excellent heavy industrial performance and light penetrability, and is especially suitable for the production of optical laminated board of touch panel display or 3D display.

Description

technical field [0001] The invention relates to an adhesive composition, especially a curable acrylic adhesive composition, which can be used as an adhesive for optical laminates such as touch panel displays. Background technique [0002] In recent years, electronic products have emphasized the characteristics of lightness, thinness, shortness, and smallness to enhance the convenience of use, making the liquid crystal display, especially the thin-film transistor liquid-crystal display (TFT-LCD) market rapidly Growth, thus largely replacing traditional CRT (cathode ray tube) monitors. Relevant industries have begun to devote themselves to improving the fineness and color performance of displays, and enhancing the convenience of use. This trend has also driven the development of technologies such as 3D displays and touch panels. [0003] Touch panels are usually combined with LCD panels to provide touch panel displays, which are widely used in smart phones, tablet computers, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06G02F1/133G06F3/041
Inventor 萧典达廖钦义朱健志
Owner ETERNAL MATERIALS CO LTD
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