The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2013
Filed:
Sep. 09, 2010
Churl-hee Cho, Daejeon, KR;
Do-kyung Kim, Daejeon, KR;
Jeong-gu Yeo, Daejeon, KR;
Young-soo Ahn, Daejeon, KR;
Dong-kook Kim, Daejeon, KR;
Hong-soo Kim, Daejeon, KR;
Churl-Hee Cho, Daejeon, KR;
Do-Kyung Kim, Daejeon, KR;
Jeong-Gu Yeo, Daejeon, KR;
Young-Soo Ahn, Daejeon, KR;
Dong-Kook Kim, Daejeon, KR;
Hong-Soo Kim, Daejeon, KR;
Abstract
Disclosed herein is a method of manufacturing inorganic hollow yarns, such as cermets, oxide-non oxide composites, poorly sinterable non-oxides, and the like, at low costs. The method includes preparing a composition comprising a self-propagating high temperature reactant, a polymer and a dispersant, wet-spinning the composition through a spinneret to form wet-spun yarns, washing and drying the wet-spun yarns to form polymer-self propagating high temperature reactant hollow yarns, and heat-treating the polymer-self propagating high temperature reactant hollow yarns to remove a polymeric component from the polymer-self propagating high temperature reactant hollow yarns while inducing self-propagating high temperature reaction of the self-propagating high temperature reactant to form inorganic hollow yarns. The composition comprises 45˜60 wt % of the self-propagating high temperature reactant, 6˜17 wt % of the polymer, 0.1˜4 wt % of the dispersant, and the balance of an organic solvent.