METHOD FOR PRODUCING WATER-SOLUBLE NON-TURBID COPOLYMER OF AT LEAST ONE KIND OF WATER-SOLUBLE N-VINYL LACTAM AND AT LEAST ONE KIND OF HYDROPHOBIC COMONOMER

Title:

METHOD FOR PRODUCING WATER-SOLUBLE NON-TURBID COPOLYMER OF AT LEAST ONE KIND OF WATER-SOLUBLE N-VINYL LACTAM AND AT LEAST ONE KIND OF HYDROPHOBIC COMONOMER

Document Type and Number:

Japanese Patent JP2007169650

Kind Code:

A

Abstract:

To provide a method for producing a water-soluble copolymer of at least one kind of water-soluble N-vinyl lactam and at least one kind of hydrophobic comonomer by the radical polymerization of the monomers in an organic solvent.

A vinyl lactam copolymer is produced by the radical polymerization of at least one kind of water-soluble N-vinyl lactam and at least one kind of hydrophobic comonomer in an organic solvent in the presence of an initiator under refluxing condition. In the above method, a part of the solvent is distilled off after converting 90-99 wt.% of the used vinyl lactam and the polymerization is continued.

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Inventors:

DOBRAWA RAINER
WIDMAIER RALF
EBERHARD SCHUPP
KLAUS SCHNELL

Application Number:

JP2006345245A

Publication Date:

July 05, 2007

Filing Date:

December 22, 2006

Export Citation:

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Assignee:

BASF AG

International Classes:

C08F2/06; C08F226/06

Attorney, Agent or Firm:

Yusuke Hiraki
Ishii Teiji
Satoshi Fujita

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