Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Treatment with particular chemical
Patent
1993-06-29
1996-09-03
Lacey, David L.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Treatment with particular chemical
162 78, 162 80, D21C 916
Patent
active
055520189
ABSTRACT:
Process for improving the selectivity of the delignification of a chemical paper pulp by employing a peroxyacid, in which the unbleached pulp originating from the cooking operation is treated with an aqueous solution of this organic peroxyacid in the presence of at least one stabilizer selected from phosphonic acids and their salts.
REFERENCES:
patent: 4400237 (1983-08-01), Kruger et al.
Du Plooy, ABJ., "Non Chlorine Bleaching of Chemical Pulp- A development study", 1984, National Research Inst., pp. 20-21.
Kuczynski et al., "DTPMPA: Polyamino Polyphosphonic acid and its use in paper processes", Jun. 1988 TAPPI Journal, 171-174.
Yotsuya, M. et al, Jap.Pat. 21,591/82, "Bleaching of Pulp with Peroxide", 1004 Abstract Bulletin of the Institute of Paper Chemistry, vol. 53,No.4, Oct. 1982, No. 4578.
K. Kuczynski et al, "DTPMPA:plyamino polyphosphonic acid and its use in paper processes . . . ", TAPPI Journal, (PCT 158) 872, No. 6, Jun. 1988, pp. 171-174.
Ullmann's Encyclopedia of Industrial Chemistry, 5th Ed. vol. A18, 1991; pp. 568-569.
Lacey David L.
Nguyen Dean T.
Solvay Interox (Societe Anonyme)
LandOfFree
A process for delignifying pulp with organic peroxyacid in the p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A process for delignifying pulp with organic peroxyacid in the p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A process for delignifying pulp with organic peroxyacid in the p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1947810