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:
Jan. 03, 2012
Filed:
Feb. 26, 2009
Kuo-huang Hsieh, Taipei, TW;
Chun-pin Lin, Taipei, TW;
Ken-hsuan Liao, Taipei, TW;
Chung-yi Lee, Taipei, TW;
Ching-ting Tsao, Taipei, TW;
Kuo-Huang Hsieh, Taipei, TW;
Chun-Pin Lin, Taipei, TW;
Ken-Hsuan Liao, Taipei, TW;
Chung-Yi Lee, Taipei, TW;
Ching-Ting Tsao, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
The present invention discloses a cone material in endodontic treatment. The cone material comprises a thermoplastic polyurethane and a filler. The thermoplastic polyurethane is formed by a. isophorone diisocyanate (IPDI) or hexamethylene diisocyanate (HDI), b. poly(butyleneadipate) glycol (PBA) and c. chain extender, wherein the molar ratio of PBA and the diisocyanate is equal to or more than 0.8. By changing the molar composition of the components such as polyol and diisocyanate, physical and chemical property of the disclosed cone material in endodontic treatment can be adjusted.