Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2005-12-20
2005-12-20
Chin, Peter (Department: 1731)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S199000
Reexamination Certificate
active
06977027
ABSTRACT:
The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present.The present invention also describes a method for modifying talc particles involving contacting a tertiary or quaternary amine with talc particles. The present invention further describes a talc created by the process of contacting a tertiary or quaternary amine with talc particles. The present invention additionally describes a paper product having a modified talc filler wherein the modified talc filler has been contacted with a tertiary or quaternary amine.
REFERENCES:
patent: 4964955 (1990-10-01), Lamar et al.
patent: 5076846 (1991-12-01), Buri et al.
patent: 6083491 (2000-07-01), Mellul et al.
patent: 6565646 (2003-05-01), Lasmarias et al.
Kortmeyer Jordan
Lasmarias Vicente
Layne Alexis
Reynolds Jason
Sharma Shripal
Chin Peter
Luzenae America, Inc.
Sheridan & Ross P.C.
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