Abstract: A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
Type:
Grant
Filed:
March 22, 2006
Date of Patent:
December 16, 2008
Assignee:
Koppers Delaware, Inc.
Inventors:
Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder, Robert H. Wombles
Abstract: A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch having a softening point in the range of about 140° C. to 200° C. A mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
Type:
Grant
Filed:
May 9, 2002
Date of Patent:
June 27, 2006
Assignee:
Koppers Delaware, Inc.
Inventors:
Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder, Robert H. Wombles