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Acrylic based adhesive composition and applications thereof

An acrylic and composite technology, applied in the direction of adhesive additives, non-macromolecular organic compound adhesives, non-macromolecular adhesive additives, etc., can solve the problem that laminates cannot be tightly bonded, easy to generate air bubbles, and reduce Problems such as heavy workability, achieve good light penetration, avoid air bubbles, and reduce the effect of level difference

Active Publication Date: 2014-05-14
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); however, the edge of the laminated board is due to the design and application. 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
[0006] 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 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 based adhesive composition and applications thereof
  • Acrylic based adhesive composition and applications thereof
  • Acrylic based adhesive composition and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Prepare 100 parts by weight of acrylate oligomer (a1), 59.1 parts by weight of acrylate monomer (b1), 16.2 parts by weight of plasticizer (d1), and 6.8 parts by weight of crosslinking agent (e1), heat Stir to 70°C to make it evenly mixed, remove the heat source and keep stirring to cool to room temperature, and 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 ( on the second substrate), and then exposed three times with a UV exposure machine (model: F300S+AJ-6-UVL; UV light source: AJM-07 / UVICURE PlusⅡ) at a linear speed of 4 m / min (exposure energy is about 1086 mJ / square centimeter). 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), 4.9 parts by weight of acrylate monomer (b2), 0.3 parts by weight of photoinitiator (c1), and 16.2 parts by weight of plasticizer at room temperature (d1), and 0.6 parts by weight of cross-linking agent (e2), and then adding 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 obtained adhesive composition was coated on a PET release film (Higashiyama, Japan; model: HY-TS12 / 50 microns) with a line coating bar (KODAIRA; model: YBA3; the adjustment scale was 3), and the coated Put the PET substrate 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 PlusⅡ), and expose at a line speed of 4 meters / minute 1 time (exposure energy is about 362 millijoules / cm2), and then covered with a release film (Higashiyama, Jap...

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PUM

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Abstract

The invention relates to an acrylic based adhesive composition and applications thereof. The composition comprises: (a) an acrylic based oligomer having at least one unsaturated group, an acrylic based polymer having a group selected from a group consisting of hydroxyl, amino, carboxylic acid group and combinations thereof, or mixtures of the acrylic based oligomer and acrylic based polymer; (b) a photopolymerizable monomer; (c) a photo initiator; (d) a plasticizer comprising a compound of formula (I), a compound of formula (II), or mixtures thereof: wherein, R1 to R5, n1, and A are as defined in the specification. The composition can be used as an adhesive for an optical laminated board, can significantly reduce segment difference, prevents bubbles from generation, has good heavy industrial performance, has good light penetration rate, and is particularly suitable for manufacturing optical laminated boards of touch panel display or 3D display.

Description

[0001] This application is a divisional application of an application filed by the same applicant on October 28, 2011. technical field [0002] 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 [0003] In recent years, electronic products have emphasized the characteristics of lightness, thinness, shortness, and smallness to enhance the convenience of use, so that the liquid crystal display, especially the thin-film transistor liquid-crystal display (TFT-LCD) market has grown 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. [0004] Touch p...

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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