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:
Oct. 22, 2002
Filed:
Dec. 29, 2000
Applicant:
Inventors:
Paul Alexander Cameron, Northallerton, GB;
Vernon Charles Gibson, London, GB;
Derek John Irvine, Cleveland, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 5/06 ;
U.S. Cl.
CPC ...
C07F 5/06 ;
Abstract
An enolate functionalized reaction intermediate, represented by the formula (I) shown in the specification, such as, N,N′-ethylenebis (3,5-di-tertbutylsalicylidene imine) enolate of ter-butyl-isobutyrate aluminum, is useful for the production of vinyl polymers, such as polymethylmethacrylate, from the corresponding vinyl polymers, e.g., methylmethacrylate, by a living polymerization reaction. A Lewis acid may be used in the polymerization.