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:
May. 22, 1990
Filed:
Jul. 03, 1989
Applicant:
Inventors:
Wesley C Blocker, Baton Rouge, LA (US);
David N Roark, Baton Rouge, LA (US);
Edwin D Hornbaker, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 93 ; 526310 ;
Abstract
A water-soluble salt of monoallylamine is polymerized in an aqueous reaction medium at a temperature of about 30.degree.-80.degree. C. in the presence of a polymerization initiator comprising about 3-15% by weight of hydrogen peroxide and about 1-700 ppm of a multi-valent metal ion, based on the weight of the monomer charge. The hydrogen peroxide is preferably introduced continuously or periodically during a substantial portion of the polymerization reaction. Preferred sources of the metal ion are water-soluble iron salts, such as ferric or ferrous chloride.