Title:
PRODUCTION OF PULP
Document Type and Number:
Japanese Patent JPH03174078
Kind Code:
A
Abstract:
PURPOSE: To obtain mechanical pulp with the refining energy reduced despite a shortened treatment time in no need of sterilization of the stock by treating a fibrous product with an enzyme to allow the enzyme to act on the lignin in the fibrous product.
CONSTITUTION: The fibrous product is subjected to enzymatic treatment where the enzyme is allowed to act on the lignin in the fibrous product. As the enzyme, are cited an oxidase, particularly phenol oxidase or the like, and the oxidation- reduction potential is properly adjusted with a suitable oxidation and reduction agent, particularly a gaseous nitrogen or the like. In a preferred embodiment, the enzymatic treatment is carried out at 40-75°C and a pH of 4.0-8.0.
Inventors:
MARIYA BUAHERI
NIINA SARAMA
KINMO RUOHONIEMI
NIINA SARAMA
KINMO RUOHONIEMI
Application Number:
JP30899690A
Publication Date:
July 29, 1991
Filing Date:
November 16, 1990
Export Citation:
Assignee:
ENSO GUTZEIT OY
International Classes:
C12S3/08; D21B1/02; D21B1/14; D21C3/22; D21C5/00; D21C9/00; (IPC1-7): C12S3/08; D21B1/14; D21C3/22; D21C9/00
Attorney, Agent or Firm:
Koji Katagiri