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:
Nov. 15, 2011
Filed:
Jun. 26, 2008
Ronald B. Leng, Midland, MI (US);
Avani M. Patel, Midland, MI (US);
Brian D. Scherzer, Midland, MI (US);
Derrick G. Wetters, Bay City, MI (US);
Douglas C. Greminger, Midland, MI (US);
Ronald B. Leng, Midland, MI (US);
Avani M. Patel, Midland, MI (US);
Brian D. Scherzer, Midland, MI (US);
Derrick G. Wetters, Bay City, MI (US);
Douglas C. Greminger, Midland, MI (US);
Dow Global Technologies LLC., Midland, MI (US);
Abstract
Brominated polybutadiene polymers are recovered from a bromination reaction solution by forming the solution into droplets, thermally stripping the solvent from the droplets, and then washing the resulting particles. The washed particles are then recovered from the washing liquid. The droplets can be dispersed into a gaseous medium such as air and then transferred into a nonsolvent liquid for washing, or can be formed directly into the nonsolvent liquid. The process forms a particulate polymer material that is easily filterable and has low levels of volatile impurities and inorganic salts. Brominated polybutadiene polymers recovered in this manner are often very thermally stable.