Title:
METHOD FOR SYNTHESIZING POLYSILAZANE EXCELLENT IN FILM STRENGTH, AND HEAT-RESISTANT INSULATED WIRE COATED WITH THE SAME AND BAKED
Document Type and Number:
Japanese Patent JPH06136131
Kind Code:
A
Abstract:
PURPOSE: To obtain a polysilazane which has both heat resistance and flexibility and gives a film excellent in mechanical strengths by optimizing the method for synthesizing the polysilazane and to obtain a heat-resistant insulated wire coated with an insulation film having heat resistance, flexibility, and good mechanical strengths.
CONSTITUTION: A dihalosilane of the general formula: R1R2SiX2 (wherein R1 and R2 are each independently H, alkyl, alkenyl, cycloalkyl, alkylamino, aryl, or alkylsilyl) is subjected to ammonolysis at -20°C or lower to give a polysilazane consisting of repeating units of the formula: -SiR1R2-NH-. The polysilazane is applied to a conductor and baked to give a heat-resistant insulated wire.
Inventors:
HIRAI HIROKI
KAMIOKA ISAO
IWATA KOICHI
KAMIOKA ISAO
IWATA KOICHI
Application Number:
JP31088992A
Publication Date:
May 17, 1994
Filing Date:
October 26, 1992
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
C01B21/068; C08G77/48; C08G77/62; C09D183/00; C09D183/16; H01B3/30; H01B7/02; H01B7/29; H01B13/16; (IPC1-7): C08G77/62; C01B21/068; C09D183/16; H01B3/30; H01B7/02; H01B7/34
Attorney, Agent or Firm:
Nishikawa Shigeaki