Title:
COAL TAR AND HYDROCARBON MIXTURE PITCH AND THE PREPARATION AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO2002092728
Kind Code:
A3
Abstract:
A method of making a high softening point coal tar pitch using high efficiency evaporative distillation, as well as the uses and applications of such pitch. According to the method, a feed coal tar pitch having a softening point in the range of 70°C to 160°C is fed into a processing vessel wherein the processing vessel is heated to a temperature in the range of 300°C to 450°C and wherein a pressure inside the processing vessel is in the range of 5 Torr or less. An output coal tar pitch is withdrawn from the processing vessel. The output coal tar pitch has a softening point in the range of 140°C to 300°C and has less than 5% mesophase.
Inventors:
GOLUBIC THOMAS A (US)
KRUPINSKI KENNETH C (US)
SAVER WILLIAM E (US)
SNYDER DAVID R (US)
WOMBLES ROBERT H (US)
KRUPINSKI KENNETH C (US)
SAVER WILLIAM E (US)
SNYDER DAVID R (US)
WOMBLES ROBERT H (US)
Application Number:
PCT/US2002/014816
Publication Date:
January 15, 2004
Filing Date:
May 09, 2002
Export Citation:
Assignee:
KOPPERS IND OF DELAWARE INC (US)
GOLUBIC THOMAS A (US)
KRUPINSKI KENNETH C (US)
SAVER WILLIAM E (US)
SNYDER DAVID R (US)
WOMBLES ROBERT H (US)
GOLUBIC THOMAS A (US)
KRUPINSKI KENNETH C (US)
SAVER WILLIAM E (US)
SNYDER DAVID R (US)
WOMBLES ROBERT H (US)
International Classes:
F16D69/02; C01B31/04; C08J3/00; C08L1/00; C08L95/00; C10C1/00; C10C1/04; C10C1/16; C10C1/20; C10C3/00; C10C3/02; C10C3/06; C10C3/10; C10L1/32; C23C16/00; (IPC1-7): C08L95/00; B64C25/42; C08J3/20; C08J5/04; C08L7/00; C10C3/06; F16D63/00
Foreign References:
| US4193900A | 1980-03-18 | |||
| US5413738A | 1995-05-09 | |||
| US5217657A | 1993-06-08 | |||
| US6129868A | 2000-10-10 |
Other References:
See also references of EP 1401960A4
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