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:
Dec. 29, 2009
Filed:
Jul. 25, 2006
Applicants:
Sungcheol Yoon, Daejeon, KR;
Young Chul Won, Suwon, KR;
Young Whan Park, Daejeon, KR;
Sung Ho Chun, Daejeon, KR;
Dai Seung Choi, Daejeon, KR;
Inventors:
Sungcheol Yoon, Daejeon, KR;
Young Chul Won, Suwon, KR;
Young Whan Park, Daejeon, KR;
Sung Ho Chun, Daejeon, KR;
Dai Seung Choi, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/02 (2006.01); C07F 15/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a method of preparing a phosphonium compound by reacting a protic phosphonium compound represented by [(R)—P(R)(R)]HX and a salt compound represented by [C][Ani]. Therefore, a phosphonium compound used as a cocatalyst for the preparation of a polar cyclic olefin polymer can be produced at high yield.