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Copolymer of (meth)acrylic ester, composition, optical element and electric member

Foreign code F110003555
File No. BE06401WO
Posted date Jun 29, 2011
Country United States of America
Application number 29915706
Gazette No. 20090264610
Gazette No. 8435610
Date of filing Oct 5, 2006
Gazette Date Oct 22, 2009
Gazette Date May 7, 2013
International application number JP2006320360
International publication number WO2007129418
Date of international filing Oct 5, 2006
Date of international publication Nov 15, 2007
Priority data
  • 2006US-11299157 (Oct 5, 2006) US
  • 2006US-60797649 (May 5, 2006) US
  • 2006WO-JP320360 (Oct 5, 2006) WO
Title Copolymer of (meth)acrylic ester, composition, optical element and electric member
Abstract (US8435610)
A copolymer of (meth)acrylic ester represented by a general formula (1) including a following repeating unit A and repeating unit B.
In the general formula (1), R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents 1 to n, n represents the number of fluorine atoms which can be contained in the aromatic ring; and a and b each independently represent an integer of 1 or more.
Scope of claims [claim1]
1. A liquid crystal display comprising an optical film, the optical film comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
[claim2]
2. A phase contrast film comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
[claim3]
3. A diffusion plate comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
[claim4]
4. A light guide wave plate comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
[claim5]
5. A prism sheet comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
[claim6]
6. A light emitting diode (LED) comprising an optical film, the optical film comprising a copolymer of (meth)acrylic ester represented by general formula (1) including the following repeating unit A and repeating unit B:
wherein R1 and R2 each independently represent hydrogen atom or methyl group; R3 represents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents a number from 1 to n, and n represents the number of fluorine atoms which can be contained in the aromatic ring, wherein the repeating unit A is formed by methyl (meth)acrylate (MMA) and the repeating unit B is formed by pentafluorophenyl (meth)acrylate (PFPA) and the ratio of polymerization between MMA and PFPA is set such that MMA: PFPA=80 weight percent: 20 weight percent to 88 weight percent: 12 weight percent.
  • Inventor, and Inventor/Applicant
  • KOIKE YASUHIRO
  • OKAMOTO YOSHIYUKI
  • TAGAYA AKIHIRO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO/SORST Photonics polymer for "Fiber To The Display" AREA
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