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:
Jun. 23, 2015
Filed:
Sep. 19, 2011
Applicants:
Bruce A. King, Midland, MI (US);
John W. Hull, Jr., Midland, MI (US);
Inventors:
Bruce A. King, Midland, MI (US);
John W. Hull, Jr., Midland, MI (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/20 (2006.01); C08F 8/18 (2006.01); C08C 19/12 (2006.01); C08F 8/22 (2006.01);
U.S. Cl.
CPC ...
C08F 8/20 (2013.01); C08F 8/18 (2013.01); C08C 19/12 (2013.01); C08F 8/22 (2013.01); C08F 2800/20 (2013.01);
Abstract
Butadiene polymers are brominated using a quaternary ammonium or quaternary phosphonium tribromide as the brominating agent. The bromination is performed in a solvent mixture than contains at least one polyhalogenated alkane and at least one monohalogenated alkane. The process proceeds easily under mild conditions and allows high conversions to be achieved easily.