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:
Aug. 29, 2000
Filed:
Apr. 17, 1998
Applicant:
Inventors:
Kenan Yunlu, Princeton, NJ (US);
Min He, East Windsor, NJ (US);
Jean-Pierre Cuif, Princeton, NJ (US);
Michel Alas, Melle, FR;
Assignee:
Rhodia Rare Earths Inc., Shelton, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C08F / ;
U.S. Cl.
CPC ...
534 16 ; 534 15 ; 526164 ; 502102 ; 502117 ; 502152 ; 502170 ;
Abstract
Stable Rare Earth carboxylate liquids having high concentrations of Rare Earths and suitable for use in forming active Ziegler Natta catalysts, are prepared with stabilizing agents such as water and/or acid. The liquids comprise from about 4.5% to about 20% Rare Earth element(s). A novel process for making is disclosed.