D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/63 (2006.01) C10C 1/00 (2006.01) D21C 3/18 (2006.01) D21C 9/08 (2006.01)
Patent
CA 2061940
ABSTRACT This invention comprises a process for treating wood based pulp with aluminum hydroxychloride to reduce or eliminate pitch problems associated with making and processing such pulp. Aluminum hydroxychloride having a basisity of at least 70 percent is added to wood based pulp in an amount of up to 5 percent by weight (based on the weight of ovendry pulp) at one or more points in the pulp and/or paper processes and at a system pH within the range of from about 3 to about 8. The use of this invention results in paper products which retain more of their brightness than pulp processed with other known aluminum containing products.
Ellis Michael E.
Shepperd Paul III
Sprouse Patti E.
Bereskin & Parr
Ellis Michael E.
Hoechst Celanese Corporation
Shepperd Paul III
Sprouse Patti E.
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