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:
Jan. 04, 1977
Filed:
Mar. 03, 1975
Thomas A Chamberlin, Midland, MI (US);
Norman L Madison, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Novel polymers are described herein which are particularly useful in removing phenolics from waste streams. The polymers are prepared by reacting an oxazoline or oxazine (preferably 2-methyl or ethyl-2-oxazoline) with a cross-linked vinylaromatic polymer bearing pendant halomethyl groups on the aromatic rings. Macroporous beads prepared by reacting cross-linked chloromethylated polystyrene with 2-methyl and/or 2-ethyl-2-oxazoline are particularly useful embodiments in removing phenolics from aqueous waste streams and are used to remove phenolics (e.g. tannins) and other color-bodies from bleached Kraft pulp effluent.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile