logo

For the Inventor, By the Inventor

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.:

US 9233861 B1

PDFFull Text
Date of Patent:
Jan. 12, 2016

Filed:

Dec. 13, 2012

Flocculation treatment agent

Applicant:

Hymo Corporation, Tokyo, JP;

Inventors:

Shohei Mitsui, Tokyo, JP;

Kazuoki Takeo, Tokyo, JP;

Shogo Wakatsuki, Tokyo, JP;

Atsushi Yonekura, Tokyo, JP;

Assignee:

HYMO CORPORATION, Tokyo, JP;

Attorney:

McDermott Will & Emery LLP

Primary Examiner:

Mark Halpern

Int. Cl.
CPC ...
C02F 1/56 (2006.01); B01D 21/01 (2006.01); C08F 8/12 (2006.01); C08L 39/02 (2006.01); C08L 71/02 (2006.01); D21H 21/18 (2006.01); D21C 5/02 (2006.01); D21H 17/34 (2006.01); D21H 17/37 (2006.01); D21H 17/00 (2006.01); D21H 21/20 (2006.01); C08F 126/02 (2006.01); C08F 2/32 (2006.01); D21H 21/10 (2006.01); D21H 21/16 (2006.01); C02F 11/14 (2006.01); C08L 33/26 (2006.01); C02F 101/30 (2006.01);
U.S. Cl.
CPC ...
C02F 1/56 (2013.01); B01D 21/01 (2013.01); C08F 2/32 (2013.01); C08F 8/12 (2013.01); C08F 126/02 (2013.01); C08L 39/02 (2013.01); C08L 71/02 (2013.01); D21C 5/027 (2013.01); D21H 17/34 (2013.01); D21H 17/37 (2013.01); D21H 17/74 (2013.01); D21H 21/10 (2013.01); D21H 21/16 (2013.01); D21H 21/18 (2013.01); D21H 21/20 (2013.01); C02F 11/14 (2013.01); C02F 2101/308 (2013.01); C02F 2305/04 (2013.01); C08L 33/26 (2013.01); Y02W 30/648 (2015.05);
Abstract

A water-in-oil emulsion is a product form having many practical advantages. A vinylamine-based macromolecule having specific effects as papermaking chemicals and a flocculant is provided in the form of a water-in-oil emulsion having good storage stability and high performance as a flocculation treatment agent. Disclosed is a flocculation treatment agent including a water-in-oil emulsion of a water-soluble macromolecule that is produced by subjecting a water-in-oil emulsion of an aqueous poly-N-vinylcarboxylic acid amide solution coexisting with a polyoxyalkylene alkyl ether to hydrolysis in the presence of an acid or a base. Preferably, the polyoxyalkylene alkyl ether is added before the hydrolysis reaction.

Find Patent Forward Citations

Loading…