Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan LtdfiledCriticalNKK Corp
Priority to JP15979387ApriorityCriticalpatent/JPS646089A/en
Publication of JPS646089ApublicationCriticalpatent/JPS646089A/en
PURPOSE:To obtain the titled pitch with uniform particle size distribution, having potential orientation, applicable as an alternative raw material such as binder pitch, by spraying viscosity-regulated raw pitch, through a nozzle, into an inert atmosphere or sparingly oxidative atmosphere. CONSTITUTION:Bulk mesophase pitch is regulated in the viscosity by means of, e.g. adding a solvent highly compatible therewith such as quinoline being preheated to 300-500 deg.C followed by feeding to a nozzle such as dual-fluid nozzle, through which the mixture is sprayed into an inert atmosphere such as of N2 or Ar heated to ca. <=500 deg.C or sparingly oxidative atmosphere such as N2 containing ca. 10% of air, ozone or chlorince, thus obtaining the objective pitch.
JP15979387A1987-06-291987-06-29Production of microsphere type pitch
PendingJPS646089A
(en)
5-(2,5-diketotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylicanhydride, its use as curing agent for epoxy resins and as raw material for the production of polyimides, epoxy resins containing it, and their use in the preparation of various articles, and powder coating compositions