Title:
DEHYDRATION SPEED INCREASING METHOD OF PULP LIQUID
Document Type and Number:
Japanese Patent JPS6017192
Kind Code:
A
Abstract:
A process for increasing rate of dewatering in the manufacture of paper from an aqueous furnish which comprises at least 40% by weight of mechanical wood pulp, thermomechanical wood pulp, or mixtures thereof, by addition thereto of an aluminum salt, e.g., alum, and a water-soluble copolymer containing from about 2 to about 30 mole percent repeating units derived from 2-acrylamido-2-methylpropane sulfonic acid, from 0 to about 25 mole percent repeating unit derived from acrylic acid, and from about 45 to about 98 mole percent repeating units derived from acrylamide, while maintaining pH of the furnish in the range of from about 3.5 to about 6.5.
Inventors:
EDOWAADO SUTORAZUDEINZU
Application Number:
JP11923284A
Publication Date:
January 29, 1985
Filing Date:
June 12, 1984
Export Citation:
Assignee:
AMERICAN CYANAMID CO
International Classes:
D21H11/08; D21H13/12; D21C9/18; D21H17/37; D21H21/10; (IPC1-7): D21C9/18
Attorney, Agent or Firm:
Heikichi Odashima
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