Adhesive composition for polarizing plate, adhesive film for polarizing plate prepared using the same, polarizing plate comprising the same and optical display comprising the same
US9567498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2015 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An adhesive composition for polarizing plates includes a (meth)acrylic copolymer, an isocyanate crosslinking agent, and a silane coupling agent. The molar ratio (A) of the number of moles of hydroxyl groups in the (meth)acrylic copolymer may be about 2.5 mol % to about 4 mol %, the molar ratio (B) of the number of moles of alkoxy silane groups in the silane coupling agent may be about 50 mol % to about 80 mol %, and the molar ratio (C) of the number of moles of isocyanate groups of the isocyanate crosslinking agent may be about 20 mol % to about 50 mol %, based on the total number of moles of alkoxy silane groups of the silane coupling agent and isocyanate groups of the isocyanate crosslinking agent. An adhesive film is formed from the adhesive composition, a polarizing plate includes the adhesive film, and an optical display includes the polarizing plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.