Title:
DE-INKING AGENT FOR REGENERATING WASTE PAPER AND REMOVAL OF INK
Document Type and Number:
Japanese Patent JPH09228281
Kind Code:
A
Abstract:
To obtain a de-inking agent for regenerating waste paper, capable of efficiently removing the ink from pulp fibers and giving regenerated pulp high in whiteness and little in the left ink.
This de-inking agent for regenerating waste paper contains an enzyme and a compound of the formula: R1O-(PO)x-[(EO)y-(AO)z]-R2, wherein R1 is a 8-24C linear of branched alkyl or alkeny2; R2 is hydrogen or a 2-24C acyl; PO is a propylene unit; Eo is an ehtylece unit; AO is a ≥3C alkylene oxide unit; (x) and (z) are each a positive integer of ≥1, and 10≤(x)+(z)≤100; (y) is a positive number satisfying: 10≤(y)≤100; the addition from of PO is a block form; the addition forms of EO and AO are each a block form or a random form.
Inventors:
EGAWA JUNTA
TAKUBO YOKO
MASAMIZU KOJI
TAKUBO YOKO
MASAMIZU KOJI
Application Number:
JP19172996A
Publication Date:
September 02, 1997
Filing Date:
July 22, 1996
Export Citation:
Assignee:
LION CORP
International Classes:
D21C5/02; (IPC1-7): D21C5/02
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)