Aluminum hydroxychloride as pitch control agent

Details Aluminum hydroxychloride as pitch control agent Aluminum hydroxychloride as pitch control agent

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.

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