IE790024L - Deformable pitch. - Google Patents

Deformable pitch.

Info

Publication number
IE790024L
IE790024L IE790024A IE2479A IE790024L IE 790024 L IE790024 L IE 790024L IE 790024 A IE790024 A IE 790024A IE 2479 A IE2479 A IE 2479A IE 790024 L IE790024 L IE 790024L
Authority
IE
Ireland
Prior art keywords
degrees
carbon
fibres
toluene
pitch
Prior art date
Application number
IE790024A
Other versions
IE48253B1 (en
Original Assignee
Exxon Research Engineering Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US05/903,172 external-priority patent/US4208267A/en
Application filed by Exxon Research Engineering Co filed Critical Exxon Research Engineering Co
Publication of IE790024L publication Critical patent/IE790024L/en
Publication of IE48253B1 publication Critical patent/IE48253B1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Inorganic Fibers (AREA)

Abstract

prepn. of pitch contg. >75% optically anisotropic (neomeso) phase comprises (A) extn. of isotropic pitch with an organic solvent system to leave a fraction with sintering pt. below 350 degrees C (as determined by DTA in absence of oxygen), and (B) heating the insoluble fraction at 230-400 degrees C. Suitable solvents have solubility parameter at 25 degrees C of 8-9.5 (8.7-9), e.g. benzene, toluene and toluene/heptane mixts. Used for mfr. of carbon electrodes, and esp. carbon and graphite fibres. The neo-meso phase material can be heated at 400 degrees C without significant coking and with 5% wt. loss, allowing it to be spun into fibres for subsequent oxidn. at 200-350 degrees C in air, and carbonisation at 800-2800 degrees (1000-2000) degrees C. Carbon or graphite fibres with high strength and modulus are obtd. without the difficult and expensive high-temp. stretching process. [IT1110284B]
IE24/79A 1978-05-05 1979-01-05 Improvements in forming optically anisotropic pitches IE48253B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/903,172 US4208267A (en) 1977-07-08 1978-05-05 Forming optically anisotropic pitches

Publications (2)

Publication Number Publication Date
IE790024L true IE790024L (en) 1979-11-05
IE48253B1 IE48253B1 (en) 1984-11-14

Family

ID=25417060

Family Applications (1)

Application Number Title Priority Date Filing Date
IE24/79A IE48253B1 (en) 1978-05-05 1979-01-05 Improvements in forming optically anisotropic pitches

Country Status (6)

Country Link
BE (1) BE873337A (en)
IE (1) IE48253B1 (en)
IT (1) IT1110284B (en)
MX (1) MX6338E (en)
NL (1) NL7900103A (en)
ZA (1) ZA7958B (en)

Also Published As

Publication number Publication date
MX6338E (en) 1985-04-23
IT1110284B (en) 1985-12-23
IT7919108A0 (en) 1979-01-05
IE48253B1 (en) 1984-11-14
BE873337A (en) 1979-07-09
ZA7958B (en) 1979-12-27
NL7900103A (en) 1979-11-07

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