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:
Aug. 16, 2011
Filed:
Dec. 22, 2006
Vinod Kumar Rai, Bangalore, IN;
Ashok Shyadligeri, Bangalore, IN;
Baraka Kawawa, Bensalem, PA (US);
Abdul Rafi Khwaja, East Norriton, PA (US);
Narain Madhavan, Bangalore, IN;
Vinod Kumar Rai, Bangalore, IN;
Ashok Shyadligeri, Bangalore, IN;
Baraka Kawawa, Bensalem, PA (US);
Abdul Rafi Khwaja, East Norriton, PA (US);
Narain Madhavan, Bangalore, IN;
Other;
Abstract
Composition and method of use for tannin based environmentally benign polymeric coagulants are disclosed. Tannin based coagulants are copolymers of naturally occurring tannins and a cationic monomer. One embodiment of the present invention provides for a composition, of a tannin based polymeric coagulant which is comprised of N,N-(dimethylaminoethyl) methacrylate (MADAME) polymerized using t-butylhydroperoxide and sodium metabisulfite. The resulting polyMADAME is converted to hydrochloride and then blended/reacted in an aqueous medium with tannin to obtain a homogenous poly(MADAME)-tannin composition. The method of use comprises adding an amount of the composition effective for the purpose of clarifying oily wastewater from food and beverage, steel, automotive, transportation, refinery, pharmaceutical, metals, paper and pulp, chemical processing and hydrocarbon processing industries.