Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1992-07-14
1994-11-01
Jones, W. Gary
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 4, D21C 502
Patent
active
053605128
ABSTRACT:
The invention relates to a method and product for treating waste paper material in which the material is pulped to form a slush-like fibrous stock, an ink dispersing agent is added to disperse ink particles from the stock, and the dispersed ink particles are removed from the stock. The ink dispersing agent comprises a mixture of phosphated and carbonated sodium salts, which achieves effective ink dispersal at ambient temperatures and under neutral pH conditions. The ink dispersing agent can also be effectively used as a one-shot product without the addition of any other chemicals to the stock. It also detackifies and disperses stickies from the stock and improves white water clarity.
REFERENCES:
patent: 441462 (1890-11-01), Barnes
patent: 1628931 (1927-05-01), Todd
patent: 1925372 (1933-09-01), Darling
patent: 1988363 (1935-01-01), Synder
patent: 2525594 (1950-10-01), Fenneil
patent: 3285849 (1966-11-01), Watanabe
patent: 4599190 (1986-07-01), Maloney
patent: 4780179 (1988-10-01), Clement
patent: 4964949 (1990-10-01), Hamaguchi et al.
Freeman, Horace, "A New Method Of Pitch Control In Newsprint Manufacture", Pulp and Paper Magazine of Canada, Jul. 1947.
Swanson, John et al., "Surface Chemical Studies on Pitch-A New Approach to the Pitch Problem in Papermaking", TAPPI, vol. 39 No. 10 (Oct. 1956) pp. 684-690.
Deinking of Paper, Institute of Paper Chemistry, Appleton, Wis. (Apr. 1943), Wict Publ, pp. 5-11.
B. Z. Smolyanitskii and B. N. Moiseev-"The Collection and Processing of Waste Paper", Lesnava Promyshlennost Publishing House, Moscow 1971, p. 151.
Sven, Stolt-"Detergent Chemistry"-Kemia-Kemi No. 11, 1984 pp. 864-868.
T. W. Woodward-"Chemicals used in the deinking of secondary fiber"-TAPPI 1986 Papermaking Chemical Processing Conference.
W. T. Woodward-"Appropriate chemical additives are key to improved deinking operations"-Pulp & Paper 1986; 11, pp. 59-63.
Swedish Patent Application 8601385-1 to J. E. Maloney et al., published Sep. 19, 1988 and corresponding to U.S. Pat. No. 4599190 dated Jul. 8, 1986.
Swedish Patent Application 7801471-8 to Koji Hamaguchi et al., published about Oct. 11, 1988 and corresponding to U.S. Pat. No. 4964949 dated Oct. 23, 1990.
European Patent Application No. 85306400.4-Publication No. 0174825 to R. H. Windhager and published on Mar. 19, 1986.
W. Berndt, "The Chemicals of the Deinking Process", PTS-Deinking-Symposium 1981, Munich 1981.
S. Seppala, "Today we know more about the deinking process", Know-How Wire, journal published by Jaakko Poyry, May 1988, pp. 32-34.
Jones W. Gary
Lamb Branda Adele
Woodfree Limited
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