Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1996-03-22
1997-08-26
Czaja, Donald E.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
D21C 502
Patent
active
056606842
ABSTRACT:
Describes a composition for use in flotation deinking of secondary fiber containing electrostatic ink and/or stickies and optionally conventional impact ink. The composition consists essentially of displector deinking chemicals having an HLB value greater than 10 and non-ionic surfactant deinking additives such as (i) capped aliphatic and alicyclic alkoxylates, e.g., chloride capped C.sub.5 -C.sub.20 alkyl ethoxylates, (ii) alkyl phenol ethoxylates, e.g., octyl phenol ethoxylates, and (iii) a combination of (i) and (ii). Also described is a method for using the composition in a deinking process that includes a flotation step.
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Li Chin
Longhini David A.
Czaja Donald E.
Fortuna Jos'e A.
Mallak Frank P.
PPG Industries Inc.
Stein Irwin M.
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