Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Adhesive agent composition for attaching to polarizing plate

A composition and adhesive technology, applied in the direction of adhesive type, graft polymer adhesive, film/sheet adhesive, etc., can solve problems such as uneven color and peeling

Inactive Publication Date: 2010-05-12
NANYA PLASTICS CORP
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the object of the present invention is to provide an adhesive composition for laminating polarizing plates, in which a silane coupling agent is grafted on both sides of an acrylic polymer to form a reactive silane coupling agent graft-modified acrylic polymer. The acrylic polymer is combined with a common cross-linking agent to form an adhesive composition. Compared with the general unmodified acrylic copolymer, the adhesive composition is because the acrylic polymer will not be entangled. It can not only improve the wetting adhesion between the adhesive and the coated body, but also has excellent adhesion, viscoelastic properties and durability due to the strong affinity between the silane coupling agent and the silicon molecules of the polarizer glass. , and when used to attach polarizers, it can adapt to the dimensional changes of polarizers in high-temperature and high-humidity environments, and alleviate the phenomenon of uneven residual stress distribution of polarizers due to dimensional changes, which can solve and suppress light leakage and color loss of polarizers Problems such as unevenness and peeling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adhesive agent composition for attaching to polarizing plate
  • Adhesive agent composition for attaching to polarizing plate
  • Adhesive agent composition for attaching to polarizing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Take the solid content in the numbered sample 1 acrylic polymer solution of Table 1 as 100 parts by weight, add 0.2 parts by weight of an isocyanate crosslinking agent (sourced from Nanya Plastic Industry Co., Ltd., trade name CL isocyanate crosslinking agent) After stirring together evenly, prepare the adhesive composition solution of this embodiment.

[0107] The adhesive composition solution was coated on the surface of a 38 μm polyester film with peeling treatment, and dried to obtain an adhesive sheet having an adhesive layer with a thickness of 25 μm. The adhesive sheet was pasted on one side of the polarizing film, and aged for 7 days under the conditions of temperature 23° C. and humidity 65% ​​RH to obtain an optical member.

[0108] The optical components were evaluated for high temperature resistance durability, high temperature and high humidity cooling and heating cycle durability, leak-proof optical rotation and elastic modulus of rheometer, and the evalua...

Embodiment 2

[0110] Take the solid content of the numbered sample 2 in Table 1 as 100 parts by weight, add 0.2 parts by weight of the isocyanate-based crosslinking agent as in Example 1 and stir evenly, then prepare a solution of the adhesive composition.

[0111] Similar to the steps in Example 1, the obtained optical components were evaluated for high-temperature durability, high-temperature, high-humidity cold-heat cycle durability, leak-proof optical rotation, and elastic modulus of the rheometer. The evaluation results are shown in Table 2.

Embodiment 3

[0113] Take the solid content of the numbered sample 3 in Table 1 as 100 parts by weight, add 0.2 parts by weight of the isocyanate-based crosslinking agent as in Example 1, stir well, and prepare a solution of the adhesive composition.

[0114] Similar to the steps in Example 1, the obtained optical components were evaluated for high-temperature durability, high-temperature, high-humidity cold-heat cycle durability, leak-proof optical rotation, and elastic modulus of the rheometer. The evaluation results are shown in Table 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
modulusaaaaaaaaaa
Login to View More

Abstract

The invention relates to an adhesive agent composition for attaching to a polarizing plate. A reactive silane coupling agent designed with a grafting position is used for grafting a modified acrylate copolymer, and then is matched with a common crosslinking agent to prepare the adhesive agent composition together. Compared with a common unmodified acrylate copolymer, the prepared adhesive agent composition has excellent adhesive agent cohesion, viscoelastic property and durability, and when used for attaching to the polarizing plate, the adhesive agent composition can adapt to the dimensional changes of the polarizing plate under a high-temperature and high-humidity environment and moderate the uneven residual stress distribution of the polarizing plate due to the dimensional changes, and can avoid the problems of light leakage, uneven color and the like of the polarizing plate because the adhesive agent is aged, cracked or peeled off.

Description

technical field [0001] The invention relates to an adhesive composition, in particular to an adhesive composition used for laminating polarizing plates. Background technique [0002] In recent years, with the increase in the size of liquid crystal panels, the polarizers used in liquid crystal modules are laminated with triacetate (TAC) protective films on the upper and lower layers of polyvinyl alcohol (PVA) polarizers to form three layers. structure. However, the above-mentioned polarizing plate is used in a high-temperature and high-humidity environment. The high-temperature and high-humidity environment will cause the size of the polarizing plate to shrink and change, which will cause the adhesive used to attach the polarizing plate to easily foam, peel off, or cause light leakage. Phenomenon. [0003] In order to improve the properties of the adhesive used for laminating polarizing plates to prevent the adhesive from foaming, peeling off or causing light leakage in hig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/00C09J7/02G02B5/30
Inventor 冯殿润徐森煌吴鸿勋庄惠钧
Owner NANYA PLASTICS CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com