Title:
FERROMAGNETIC COPOLYMER AND PRODUCTION OF THIN FILM THEREFROM
Document Type and Number:
Japanese Patent JPH04311711
Kind Code:
A
Abstract:
PURPOSE:To provide a ferromagnetic material having a large residual polarization value and capable of being applied to various display devices, etc. CONSTITUTION:A copolymer comprising vinylidene fluoride in an amount of 70-90mol% and trifluoroethylene, as the principal components, and having a mol.wt. of 30000-300000, a Curie point of >=70 deg.C, an enthalpy change of >=24J/g at the melting point by DSC measurement and an enthalpy change of >=5J/g at the Curie point. The ferromagnetic thin film is obtained by coating a substrate with 0.1-20wt.% of a solution of the copolymer having the above composition in an ether-based solvent and subsequently baking the solution at 80-160 deg.C.
Inventors:
TSUTSUMI KENTARO
KOMORIYA HARUHIKO
KOMORIYA HARUHIKO
Application Number:
JP7899891A
Publication Date:
November 04, 1992
Filing Date:
April 11, 1991
Export Citation:
Assignee:
CENTRAL GLASS CO LTD
International Classes:
C08F214/22; C08F14/22; C08F14/26; C08F214/26; C08J3/09; C08J5/18; G02F1/1333; G02F1/136; G02F1/1365; H01L45/00; (IPC1-7): C08F214/22; C08F214/26; C08J5/18; C08L27/12; G02F1/1333; G02F1/136
Attorney, Agent or Firm:
Yoshiyuki Nishi