Title:
AMORPHOUS COPOLYMER TRANSPARENT IN VISIBLE RANGE FOR NON-LINEAR OPTICAL APPLICATION
Document Type and Number:
Japanese Patent JPH04226515
Kind Code:
A
Abstract:
PURPOSE: To provide the subject copolymers obtained by copolymerizing respective specific monomers.
CONSTITUTION: A monomer such as methyl methacrylate represented by formula I (wherein R1 is CH3, H, F, Cl, CF3 or a group represented by formula II) and a monomer, for example, 4(methacryloyloxyhexyloxy)-4'-cyanobiphenyl represented by formula III (wherein R2 is R1, X is a group represented by formula IV, O or S, m is 0.2≤m≤10 and Y is 1 or 2) are copolymerized to obtain a branched copolymer represented by formula IV [wherein (x) is a mol ratio depending on properties of an X-group and X is a group represented by formula IV (if 1≤P≤3, o<x≤1 and, if X is O and S, o<x<1, 1≤n≤6)].
Inventors:
PIEERU RU BARUNI
DOMINIKU BURUSUU
DOMINIKU BURUSUU
Application Number:
JP18377191A
Publication Date:
August 17, 1992
Filing Date:
June 28, 1991
Export Citation:
Assignee:
THOMSON CSF
International Classes:
C08F220/12; C08F20/10; C08F20/34; C08F20/38; C08F220/10; C08F220/34; C08F220/38; G02F1/35; G02F1/355; G02F1/361; (IPC1-7): C08F220/12; C08F220/34; C08F220/38; G02F1/35
Attorney, Agent or Firm:
Kazuo Sato (2 outside)