Title:
GRAFT POLYMER OF NATURAL SUBSTANCE CONTAINING SACCHARIDE STRUCTURE OR DERIVATIVE THEREOF, AND ETHYLENICALLY UNSATURATED DERIVATIVE THEREOF, AND PRODUCTION OF PAPER, BOARD, AND CARDBOARD
Document Type and Number:
Japanese Patent JP3188526
Kind Code:
B2
Abstract:
PURPOSE: To obtain a graft polymer useful as dry and wet strength agents for paper by carrying out radical polymerization of a monomer containing a specified N-vinylcarboxylamide with a saccharide (derivative) in a prescribed weight ratio.
CONSTITUTION: Monomers (mixture) are prepared that are made up of 10 to 100 wt.% N-vinylcarboxylamide of formula I (wherein R1 and R2 represent each H or a 1-6C alkyl), 0 to 90 wt.% monoethylenically unsaturated monomer copolymerizable with the monomers and free from any carboxyl group, and 0 to 5 wt.% monomer having ethylenically unsaturated nonconjugated double bonds in the molecule. The monomers are subjected to radical polymerization with a saccharide selected from among monosaccharides, oligosaccharides, and polysaccharides and their derivatives in a weight ratio of (95:5) to (20:80). Then, if necessary, the group of formula II based on the monomer of formula I is eliminated to form units of formula III to obtain a graft polymer of the saccharide (derivative) and the ethylenically unsaturated compound.
Inventors:
Heinrich Hartmann
Walter Denzinger
Michael kraner
Claudia Niltz
Friedrich Linhart
Andreas Stenge
Walter Denzinger
Michael kraner
Claudia Niltz
Friedrich Linhart
Andreas Stenge
Application Number:
JP21918292A
Publication Date:
July 16, 2001
Filing Date:
August 18, 1992
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C08F251/00; D21H17/34; C08F251/02; D21H17/35; D21H17/37; D21H21/18; (IPC1-7): C08F251/02; D21H17/34
Domestic Patent References:
| JP60147421A | ||||
| JP6274902A | ||||
| JP5374107A | ||||
| JP4227710A | ||||
| JP4320410A |
Attorney, Agent or Firm:
Toshio Yano (2 outside)