Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR DEODORIZING VINYLPYRROLIDONE POLYMER
Document Type and Number:
Japanese Patent JP2004292500
Kind Code:
A
Abstract:

To provide a method for deodorizing a vinylpyrrolidone polymer.

Hydrogen peroxide is added to an aqueous solution of the vinylpyrrolidone polymer, preferably an aqueous solution of the vinylpyrrolidone polymer having a residual vinylpyrrolidone concentration of at most 1,000 ppm based on the vinylpyrrolidone polymer under a pH condition of 7-12, and subsequently the aqueous solution of the vinylpyrrolidone polymer is dried to give a powdery vinylpyrrolidone polymer.


More Like This:
JP3570624Method for producing styrene / acrylic water-soluble resin by continuous bulk polymerization
JP2001524557INDUSTRIAL APPLICABILITY A method for producing a water-soluble or water-swellable polymer having an extremely low residual monomer content, a product produced by the method, and its use.
JPH05194624METHOD FOR REMOVING HYDROCARBON FROM POLYMER SLURRY AND APPARATUS THEREFOR
Inventors:
FUJISE KEIICHI
HAMAGUCHI ITSUKO
NAKA AKIO
Application Number:
JP2003083583A
Publication Date:
October 21, 2004
Filing Date:
March 25, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON CATALYTIC CHEM IND
DAI ICHI KOGYO SEIYAKU CO LTD
International Classes:
C08F6/10; C08F26/00; (IPC1-7): C08F6/10; C08F26/00
Attorney, Agent or Firm:
Fumio Akiyama
Hiromu Tanaka



 
Previous Patent: THERMOPLASTIC RESIN FOAM HAVING FINE CELL AND MANUFACTURING METHOD THEREFOR

Next Patent: METHOD FOR PRODUCING MALEIC ANHYDRIDE-ALKYL VINYL ETHER COPOLYMER