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. 16, 2010
Filed:
Jul. 03, 2006
Joseph Zilberman, Haifa, IL;
Joseph Zilberman, Haifa, IL;
Bromine Compounds Ltd., Be'er Sheva, IL;
Abstract
A process for preparing tetrabromobisphenol A, which comprises: i) reacting bisphenol A and bromine in dichloromethane in the presence of aqueous hydrogen peroxide at a temperature in the range of room temperature to the reflux temperature, wherein said dichloromethane is present in an amount sufficient for substantially dissolving brominated derivatives of said bisphenol A formed thereby, ii) separating the substantially solid-free reaction mixture obtained in step i) into aqueous and organic phases, precipitating tetrabromobisphenol A from the organic phase and isolating said precipitated tetrabromobisphenol A from said organic phase.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile