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. 10, 2006
Filed:
Mar. 24, 2003
Kuen-yuan Hwang, Hsinchu Industrial District, TW;
An-pang Tu, Hsinchu Industrial District, TW;
Chi-yi Ju, Hsinchu Industrial District, TW;
Ching-chung Lin, Hsinchu Industrial District, TW;
Kuen-Yuan Hwang, Hsinchu Industrial District, TW;
An-Pang Tu, Hsinchu Industrial District, TW;
Chi-Yi Ju, Hsinchu Industrial District, TW;
Ching-Chung Lin, Hsinchu Industrial District, TW;
Chang Chun Plastics Co., Ltd., Taipei, TW;
Abstract
A phosphorus-containing compound represented by formula (I) and a preparation method thereof are provided. An addition reaction is performed for an organic cyclic phosphorus compound with an aryl aldehyde compound, and then a condensation reaction is performed with an aryl compound having active hydrogen in the use of an organic acid as a catalyst to obtain the proposed phosphorus-containing compound. This phosphorus-containing compound can be used as a hardener for resin, and improves flame retardant properties and thermal resistance for a flame retardant epoxy resin composition, thereby suitably applied to resin compositions used for manufacturing printed circuit boards and laminated circuit boards in electronic or electric products.