Polymeric compositions for dewatering sewage sludges

Details for Australian Patent Application No. 2001289803 (hide)

Owner Ciba Specialty Chemicals Water Treatments Limited

Inventors Read, Helen Elizabeth; Berggren, Nils; Norman, Peter Ian

Agent Spruson & Ferguson

Pub. Number AU-B-2001289803

PCT Pub. Number WO02/16495

Priority 0020862 25.08.00 GB

Filing date 14 August 2001

Wipo publication date 4 March 2002

Acceptance publication date 1 March 2007

International Classifications

C08L 33/26 (2006.01) Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof

C02F 1/56 (2006.01) Treatment of water, waste water, or sewage

C02F 11/14 (2006.01) Treatment of sludge - with addition of chemical agents

C08G 73/02 (2006.01) Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups

Event Publications

1 March 2007 Application Accepted

  Published as AU-B-2001289803

19 July 2007 Standard Patent Sealed

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