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. 31, 2006
Filed:
Jul. 14, 2003
Applicants:
Chun-shan Wang, Tainan, TW;
Jeng-yueh Shieh, Tainan, TW;
Inventors:
Chun-Shan Wang, Tainan, TW;
Jeng-Yueh Shieh, Tainan, TW;
Assignee:
National Science Council, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/62 (2006.01); C08L 63/02 (2006.01); C08L 63/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses an active-hydrogen-containing curing agent having a phosphorus group, and a flame retardant cured epoxy resin which can be prepared via an addition reaction between the active hydrogen and the epoxide group of an epoxy resin. The cured flame retardant epoxy resin is environmentally friendly and is suitable for printed circuit board and semiconductor encapsulation applications. The phosphorus group of the curing agent has a chemical structure as follows:wherein Ar is a substituted or un-substituted phenyl or phenoxy.