METHOD FOR PRODUCING CARBON BLACK DISPERSED POLYAMIC ACID SOLUTION AND SEMICONDUCTIVE POLYIMIDE BELT

PROBLEM TO BE SOLVED: To provide a method for producing a polyamic acid solution in which carbon black is prevented from aggregation and dispersed in a stabilized particle size, and to provide a semiconductive polyimide belt by using the solution. SOLUTION: The method for producing the carbon black...

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Hauptverfasser:	WATANABE YOSHINOBU, KAMIBAYASHI MASAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAGNETOGRAPHY MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for producing a polyamic acid solution in which carbon black is prevented from aggregation and dispersed in a stabilized particle size, and to provide a semiconductive polyimide belt by using the solution. SOLUTION: The method for producing the carbon black dispersed polyamic acid solution is characterized as follows: in a method for producing a carbon black dispersed polyamic acid solution comprising the steps of dissolving a tetracarboxylic dianhydride component and a diamine component in a dispersion containing carbon black dispersed therein and polymerizing the resulting mixture, a step of kneading the polyamic acid solution under a shear stress of 0.0001-1 MPa is introduced into after the polymerization step. There are also provided the carbon black dispersed polyamic acid solution obtained by the production method and the semiconductive polyimide belt yielded by using the carbon black dispersed polyamic acid solution. COPYRIGHT: (C)2005,JPO&NCIPI