Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1993-06-04
1996-05-21
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 4, 162 72, 162 75, D21C 502
Patent
active
055185819
ABSTRACT:
A floatation method for the regeneration of waste paper employs as a deinking agent a reaction product of an alkylene oxide with a mixture of products obtained by the reaction of a natural oil or fat with an alkanolamine in a mole ratio of the natural oil or fat to the alkanolamine of products is in the range from 1:0.1 to 1:3,, wherein the amount of the alkylene oxide is in the range from 100 parts by weight to 1000 parts by weight based on 100 parts by weight of the mixture of products, provides pulp having higher degree of whiteness and less residual ink and problems caused by pitch than pulp prepared by a corresponding floatation method which employs a conventional deinking agent.
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Miyagoshi Hiroaki
Takahara Katsuhiko
Chin Peter
Nicca Chemical Co., Ltd.
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