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:
Oct. 13, 2015
Filed:
Jul. 17, 2012
Richard A. Engelman, Midland, MI (US);
David W. Ziettlow, Midland, MI (US);
Robert E. Scheid, Jr., North Wales, PA (US);
Charles B. Mallon, Hillsborough, NJ (US);
Matthias Sprehe, Walsrode, DE;
Andrew C. Arthur, Midland, MI (US);
Richard A. Engelman, Midland, MI (US);
David W. Ziettlow, Midland, MI (US);
Robert E. Scheid, Jr., North Wales, PA (US);
Charles B. Mallon, Hillsborough, NJ (US);
Matthias Sprehe, Walsrode, DE;
Andrew C. Arthur, Midland, MI (US);
Abstract
In a method of removing alkylene halogenohydrin from a cellulose ether the cellulose ether is provided, water is added to the cellulose ether and subsequently alkylene halogenohydrin and water is removed from the cellulose ether by evaporation. Alternatively steam or a steam mixture can be sparged across or through the cellulose ether to remove halogenohydrin from the cellulose ether.