MODIFIED POLYALKYLENEIMINE AND METHODS OF USING THE SAME

Title:

MODIFIED POLYALKYLENEIMINE AND METHODS OF USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2003/016379

Kind Code:

A1

Abstract:

A modified polyalkyleneimine with satisfactory stability obtained by modifying a polyalkyleneimine through a reaction which is easy to control and does not lower the cation density characteristic of the polyalkyleneimine&semi and various methods of treatment with the modified polyalkyleneimine. A polyalkyleneimine or a mixture thereof with a polyamine is reacted with a polycationic substance having a specific structure to produce a modified polyalkyleneimine having a specific structure. The modified polyalkyleneimine can be used as a sludge dehydrator, agent for improving suitability for dehydrating filtration, agent for pretreatment of papermaking materials, or yield improver to thereby enable an efficient treatment.

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Inventors:

ISHIZAKI TAKAKO (JP)
NAKASHIN KAZUHIRO (JP)
WAKAMATSU HIDEYUKI (JP)
SAKAI KENJI (JP)
ODAKA EMIKO (JP)

Application Number:

PCT/JP2002/007915

Publication Date:

February 27, 2003

Filing Date:

August 02, 2002

Export Citation:

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Assignee:

HYMO CORP (JP)
ISHIZAKI TAKAKO (JP)
NAKASHIN KAZUHIRO (JP)
WAKAMATSU HIDEYUKI (JP)
SAKAI KENJI (JP)
ODAKA EMIKO (JP)

International Classes:

B01D21/01; C02F1/56; C08G73/02; D21H17/56; D21H23/76; C02F1/00; C02F11/147; (IPC1-7): C08G73/04; B01D21/01; C02F1/56; C02F11/14; D21H21/02; D21H17/56

Foreign References:

JPS5130900A	1976-03-16
EP0005241A1	1979-11-14
US4240450A	1980-12-23
EP0005241A1	1979-11-14
JPS6215251A	1987-01-23
JPS6215251A	1987-01-23

Other References: