Title:
METHOD FOR PRODUCING HIGH-PURITY PITCH FOR HIGH-EFFICIENCY CARBON MATERIALS
Document Type and Number:
WIPO Patent Application WO/2014/200314
Kind Code:
A1
Abstract:
Provided is a method for producing a high-purity pitch for high-efficiency carbon materials, comprising the steps of: preparing a mixture by mixing a coal tar-based raw material, a first solvent and a second solvent; separating a supernatant fraction which does not contain an insoluble content and a sludge fraction which contains an insoluble content from the mixture by a centrifugal or decanting method; and removing the first solvent and the second solvent by subjecting the supernatant fraction which does not contain an insoluble content to vacuum distillation at a temperature of 280°C or less to obtain a high-purity pitch, wherein the first solvent is a single solvent of a monocyclic aromatic compound having at least one substituent having aggregability to beta-resins and quinoline insoluble contents, and the second solvent is an aromatic compound which is soluble in beta-resins and pitches.
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Inventors:
SONG YOUNG-SEOK (KR)
LEE JOO-HYUNG (KR)
YOON KWANG-EUI (KR)
PYO SANG-HEE (KR)
LEE JOO-HYUNG (KR)
YOON KWANG-EUI (KR)
PYO SANG-HEE (KR)
Application Number:
PCT/KR2014/005227
Publication Date:
December 18, 2014
Filing Date:
June 13, 2014
Export Citation:
Assignee:
OCI CO LTD (KR)
International Classes:
C10C3/08
Foreign References:
| JP3051155B2 | 2000-06-12 | |||
| JPH0733514B2 | 1995-04-12 | |||
| US4604184A | 1986-08-05 | |||
| KR20030036224A | 2003-05-09 | |||
| KR100191690B1 | 1999-06-15 |
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (KR)
특허법인 대아 (KR)
특허법인 대아 (KR)
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