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Pressure-sensitive adhesive for polarizing plates, pressure-sensitive adhesive sheet, polarizing plate with pressure-sensitive adhesive and production process for the same and optical film and production process for the same
US8993649B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993649-B2 |
| Application number | US-61194706-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 18, 2006 |
| Priority date | Jan 13, 2006 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Provided is a pressure-sensitive adhesive for polarizing plates which can adhere a polarizing plate on a liquid crystal cell with good adhesion durability and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which makes it possible remove the polarizing plate. The pressure-sensitive adhesive for polarizing plates is prepared by irradiating a pressure-sensitive adhesive material comprising (A) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having a hydroxyl group in a monomer composition ratio of 10 mass % or less, (B) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having a carboxyl group in a monomer composition ratio of 10 mass % or less and (C) an active energy beam-curable compound with an active energy beam, wherein a mass ratio of the component (A) to the component (B) is 100:1 to 100:50, and a storage elastic modulus (G′) at 23° C. is 0.3 MPa or more.
First claim
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What is claimed is: 1. A pressure-sensitive adhesive for polarizing plates, prepared by irradiating with an active energy beam a pressure-sensitive adhesive material comprising: (A) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having a hydroxyl group in a monomer composition ratio of 0.5 to 10 mass %, (B) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having…
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Physics · mapped topic
Chemistry & Metallurgy · mapped topic
Physics · mapped topic
Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8993649B2 cover?
- Provided is a pressure-sensitive adhesive for polarizing plates which can adhere a polarizing plate on a liquid crystal cell with good adhesion durability and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which makes it possible remove the polarizing plate.…
- Who is the assignee on this patent?
- Nagamoto Koichi, Kusama Kentaro, Kashio Mikihiro, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification G02B5/3083. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).