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:
Feb. 14, 2012
Filed:
Aug. 14, 2007
Daniel J. Murray, Midland, MI (US);
David B. Gorman, Midland, MI (US);
John W. Hull, Jr., Midland, MI (US);
William J. Kruper, Jr., Sanford, MI (US);
Ted A. Morgan, Midland, MI (US);
Bruce A. King, Midland, MI (US);
Ronald B. Leng, Midland, MI (US);
Daniel J. Murray, Midland, MI (US);
David B. Gorman, Midland, MI (US);
John W. Hull, Jr., Midland, MI (US);
William J. Kruper, Jr., Sanford, MI (US);
Ted A. Morgan, Midland, MI (US);
Bruce A. King, Midland, MI (US);
Ronald B. Leng, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Butadiene copolymers are brominated in solution using bromine as the brominating agent. The bromination is conducted in the presence of an excess of an aliphatic alcohol, relative to the amount of bromine that is used. The bromination proceeds rapidly at mild conditions, and is selective in that only aliphatic carbon-carbon double bonds are brominated, and unwanted bromination at tertiary carbon atoms is largely or completely avoided. The resulting brominated polymers are characterized in having very good thermal stability.