Title:
PAPERMAKING PROCESS AND PAPERMAKING ADDITIVE
Document Type and Number:
WIPO Patent Application WO/1992/000417
Kind Code:
A1
Abstract:
A papermaking additive comprising: (A) a cationic acrylamide polymer prepared by the reaction of an acrylamide polymer with a hypohalite under an alkaline condition in a temperature range of 50 to 110 °C for a short time, and (B) either an anionic inorganic substance or a cationic polyacrylamide prepared by the copolymerization of a cationic monomer such as an acrylic ester or acrylamide derivative, an $g(a),$g(b)-unsaturated carboxylic acid or its salt, and acrylamide.
Inventors:
TAKAKI TOSHIHIKO (JP)
TAKAHASHI HIDEAKI (JP)
DOKI HIROTOSHI (JP)
ITOH HIROSHI (JP)
TSUTSUMI HARUKI (JP)
TAKAHASHI HIDEAKI (JP)
DOKI HIROTOSHI (JP)
ITOH HIROSHI (JP)
TSUTSUMI HARUKI (JP)
Application Number:
PCT/JP1991/000869
Publication Date:
January 09, 1992
Filing Date:
June 27, 1991
Export Citation:
Assignee:
MITSUI TOATSU CHEMICALS (JP)
International Classes:
D21H17/37; D21H17/43; D21H17/45; (IPC1-7): D21H17/45
Foreign References:
| JPS6215391A | 1987-01-23 | |||
| JPS6065195A | 1985-04-13 | |||
| JPS4627245B1 | ||||
| JPS58108206A | 1983-06-28 | |||
| JPS3511302B1 |
Other References:
See also references of EP 0489930A4
Attorney, Agent or Firm:
Fujimoto, Hiromitsu (Urban Toranomon Bldg. 7th Fl. 16-4, Toranomon 1-chom, Minato-ku Tokyo 105, JP)
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