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Acrylic pressure-sensitive adhesive composition with good re-workability

An acrylic pressure-sensitive adhesive, acrylic copolymer technology, applied in the direction of film/sheet adhesive, adhesive type, ester copolymer adhesive, etc., can solve the problem of high peel strength, PDP filter No reworkability, durability, reliability, inapplicability, etc.

Inactive Publication Date: 2007-06-06
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent is disadvantaged because the peel strength is still too high to be unsuitable for large PDPs with high performance
[0011] Therefore, conventional PDP optical filters having a pressure-sensitive adhesive composition layer do not have excellent reworkability and high durability and reliability in a state bonded to a PDP

Method used

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  • Acrylic pressure-sensitive adhesive composition with good re-workability
  • Acrylic pressure-sensitive adhesive composition with good re-workability
  • Acrylic pressure-sensitive adhesive composition with good re-workability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Using the acrylic acid copolymer A shown in the following table 1 as the acrylic monomer composition, as shown in the following table 2, add 1.0 parts by weight of polyether modified polydimethylsiloxane copolymer (GE Toshiba Silicones L-7500 Silwet(R), after which the above-mentioned mixing and coating process and the preparation process of the PDP filter were carried out, and a peeling test and a durability test were carried out. The measurements of 180° peel strength, reworkability and durability are given in Table 3 below.

Embodiment 2

[0088] In addition to using the acrylic copolymer A shown in Table 1 below, as shown in Table 2 below, 0.1 parts by weight of a polyether-modified polydimethylsiloxane copolymer (GE Toshiba Silicones L-7500 Silwet(R)) having an HLB of 8 was added ), and 0.05 parts by weight of the porphyrin color compensation dye (Japan Yamada chemistry, TAP-2 level, porphyrazine dye), carry out the present embodiment in the same way as Example 1 (in the functional film layer No color compensation layer is used). The results for 180° peel strength, reworkability and durability are given in Table 3 below. In addition, in order to measure the change of adhesive force with time, each adhesive force of the PDP filter after intervals of 4 hours, 72 hours, 100 hours, and 150 hours was measured under the same conditions as measuring the initial adhesive force. Table 4 and Figure 2 below present the results. In addition, the results of the optical durability test are given in Table 5 below, and the ...

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Abstract

This invention relates to an acrylic pressure-sensitive adhesive composition, including a) 100 parts by weight of an acrylic copolymer containing a hydroxy group without a carboxyl group; b) 0.01~10 parts by weight of a cross-linkging agent; and c) 0.01~5 parts by weight of a polyether modified polydimethylsiloxane copolymer having HLB of 4~13 and having the structure of Formula 1, and to an adhesive sheet formed thereby. The adhesive composition and adhesive sheet according to this invention may exhibit excellent re-workability, durability, and reliability.

Description

technical field [0001] The present invention relates to an acrylic pressure-sensitive adhesive composition and an adhesive sheet exhibiting excellent reworkability, durability, and reliability. This application claims the benefit of the filing date of Korean Patent Application No. 10-2005-0005029 filed at the Korean Intellectual Property Office on January 19, 2005, the disclosures of which are incorporated herein by reference in their entirety. Background technique [0002] Recently, when expectations for high-quality / large-scale televisions including digital televisions are on the rise, in order to meet such expectations in the fields of cathode ray tubes (CRT), liquid crystal displays (LCD), plasma displays, etc., efforts have been actively made Research. [0003] Although the CRTs traditionally used as television displays have excellent resolution and screen quality, their length and weight increase undesirably in proportion to the screen size, so they are not suitable f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08
CPCC09J2201/606H01J2211/44Y10T428/2891C09J151/085C09J133/066C09J7/0217C08L71/00C08L83/12C09J153/00C08L2666/02C08L2666/04C08L2666/14C09J7/385C09J2301/302C09J133/08
Inventor 张锡基韩仁天赵显珠崔现硕朴相炫金正斗李修林
Owner LG CHEM LTD
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