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Adhesive composition and adhesion layer

A composition and adhesive technology, applied in the field of pressure-sensitive adhesive composition and pressure-sensitive adhesive layer, can solve problems such as uneven coating, textured appearance, and formation of rubber blocks, and achieve good durability and good Coatability and effects of appropriate stretchability

Active Publication Date: 2011-04-27
BENQ MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the solvent used in the pressure-sensitive adhesive is volatile, it will make the coating head easy to air-dry, and cause problems such as uneven coating, glue block formation, or poor appearance such as lines on the surface after coating, resulting in Device performance is weak or even unusable
However, if the solvent used in the pressure-sensitive adhesive is not volatile, the formed pressure-sensitive adhesive layer is prone to peeling or foaming under heating or high-temperature and high-humidity environments.

Method used

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  • Adhesive composition and adhesion layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In the acrylate copolymer solution (1) of 130 parts by weight, add solvent: the ethyl acetate of 110 parts by weight and the butyl acetate of 10 parts by weight, and obtain the solid content accounted for ((0.35*130) / (130+120) ) = 18% (w / w) solution (2). At this moment, the weight of solvent ethyl acetate (110+130*(1-35%)): the weight of butyl acetate (10) is 95:5. With respect to the solid content of the acrylate copolymer in the solution (2) as 100 parts by weight, add 0.72 parts by weight of the isocyanate crosslinking agent (AD75, TDI series, the manufacturer is Superchimici S.P.A.), 0.72 parts by weight in the solution (2). The metal chelate cross-linking agent (CA190T, aluminum metal chelate, manufacturer is I-TAI Chemicals Inc.) of weight part and the silane coupling agent (GLYMO, epoxy silane series, manufacturer is I-TAI Chemicals Inc.) of 0.036 weight part Evonik (Degussa)), the adhesive composition was obtained after thorough mixing.

[0047] Coating the ad...

Embodiment 2

[0049] Similar to Example 1, wherein the solvents are changed to 80 parts by weight of ethyl acetate and 41 parts by weight of butyl acetate, so the weight of ethyl acetate: butyl acetate in this example is 80:20.

Embodiment 3

[0051] Similar to Example 1, the solvents were changed to 39 parts by weight of ethyl acetate, 41 parts by weight of butyl acetate and 41 parts by weight of acetone. The weight of this example acetone: the weight of ethyl acetate: the weight of butyl acetate is 20:60:20.

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PUM

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Abstract

The invention discloses an adhesive composition and an adhesion layer. The adhesive composition comprises acrylic copolymer, total solvent and cross linking agent, wherein the total solvent comprises a first solvent and a second solvent, and the boiling point of the second solvent is higher than 111 DEG C. After being polymerized, the adhesive composition forms a viscose, and the first solvent has favorable solubility to the viscose. The weight ratio of the first solvent to the second solvent is 80-90:1-20. The adhesive composition is prepared by regulating the types and the proportion of the solvents, and the adhesive composition has the characteristics of low volatility, good coating property, good processability, etc. In addition, the adhesion layer formed by the adhesive composition has favorable durability and appropriate flexibility relative to base materials.

Description

technical field [0001] The present invention relates to an adhesive composition and an adhesive layer, and particularly relates to a pressure-sensitive adhesive composition and a pressure-sensitive adhesive layer. Background technique [0002] Thin sheets containing organic materials are often attached to substrates such as glass, ceramic or metal via pressure sensitive adhesives. For example, polarizers used in liquid crystal displays (LCDs) are generally films of a three-layer structure in which an optically anisotropic film such as a triacetyl cellulose (TAC) film is adhered to both sides of a polyvinyl alcohol-based polarizer at the same time surface. In order to attach the polarizer to other optical components, such as a phase retardation film with a multi-layer structure or a liquid crystal cell, a pressure-sensitive adhesive layer is coated on the surface of the polarizer. [0003] In the process of preparing the adhesive composition, if water vapor reacts with the ...

Claims

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Application Information

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IPC IPC(8): C09J133/00C09J133/08C09J7/00
Inventor 连家敏周孟洁
Owner BENQ MATERIALS
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