PITCH COMPOSITION OF RAW MATERIAL FOR CARBON FIBER

Title:

PITCH COMPOSITION OF RAW MATERIAL FOR CARBON FIBER

Document Type and Number:

Japanese Patent JPS5936724

Kind Code:

A

Abstract:

PURPOSE: The titled pitch composition, consisting of a quinoline-soluble optically isotropic pitch, having specified values of average molecular weight of structural nunits, number of condensed rings and specific gravity, and capable of giving carbon fibers having a high strength and modulus.

CONSTITUTION: A pitch composition which is an optically isotropic pitch, substantially 100% soluble in quinoline, consisting essentially of a polycyclic aromatic condensate, and having 200W400 average molecular weight of the structural units measured by the mass spectrometry (MS), 2W6 number of condensed rings and within 1.25W1.31 specific gravity range at 20°C. Preferably, the pitch contains carbon (A) having 129W2,150ppm chemical shift, carbon (B) having 980W 129ppm chemical shift and carbon (C) having 13W53ppm chemical shift based on the TMS in the 13C-NMR respectively in the following ratios: 15W25%, 55W65% and 10W20%.

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Inventors:

YAMADA YASUHIRO
IMAMURA TAKESHI
HONDA HIDEMASA
SAWAKI TOORU
SASAKI HIDEHARU

Application Number:

JP14703682A

Publication Date:

February 29, 1984

Filing Date:

August 24, 1982

Export Citation:

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Assignee:

KOGYO GIJUTSUIN

International Classes:

C10C3/04; C10C3/00; D01F9/12; D01F9/155; (IPC1-7): C10C3/00; D01F9/12

Attorney, Agent or Firm:

Director, Kyushu Industrial Technology Institute, AIST

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