Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With cleaning – preserving or conditioning of apparatus
Reexamination Certificate
2006-05-30
2006-05-30
Chin, Peter (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With cleaning, preserving or conditioning of apparatus
C162S178000, C162S199000, C162SDIG004, C252S180000
Reexamination Certificate
active
07052579
ABSTRACT:
This invention relates to a liquid composition for the control of pitch deposition in pulp and paper making comprising an aqueous solution of (1) a cationic guar polymer, and (2) isobutylene/maleic anhydride copolymer. The invention also relates to a process for inhibiting pitch and stickies deposition in pulp and papermaking systems.
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patent: 55-84491 (1980-06-01), None
Louche et al, “The Role of Special Polyelectrolytes for the Solution of Operating Problems in Paper and Paper Board Production”,Product Information, Buckman Laboratories, S.A. p. 1-25.
Ashland Inc.
Chin Peter
Hedden David L.
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