Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Patent
1996-04-15
1998-03-17
Alvo, Steven
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
162 80, 162 82, D21C 302, D21C 320
Patent
active
057282650
ABSTRACT:
The efficiency by which pulp cooking liquor components penetrate the wood and enable lignin and resins to be removed from the cellulosic materials is increased by contacting wood chips and the like with a liquid mixture comprised of white liquor containing at least one surfactant selected from the group consisting of a polymethylalkylsiloxane; a co- and terpolymer of silicone and a polyhydric alcohol; an alkoxylated aryl phosphate; an alkoxylated branched alkyl phosphate; an alkoxylated branched alcohol; an alkyl polyglycoside, an alkoxylated alkyl polyglycoside; a mixture of alkali metal salts of alkyl aromatic sulfate, a sulfosuccinate and a silicone; and combinations thereof; for a residence time effective to extract resinous components without substantial degradation of cellulose and thereafter heating at least a portion of the resulting mixture and wood chips.
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Pulp and Paper Manufacture, Third Ed., vol. 5, 1989, p. 50.
Bowker Barbara Balos
Devore David I.
Palmer John J.
Saint Victor Marie-Esther
Stine Vincent T.
Alvo Steven
Drach John E.
Henkel Corporation
Jaeschke Wayne C.
Trzaska Steven J.
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