Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Reexamination Certificate
2007-01-30
2007-01-30
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
C162S005000, C510S174000, C252S061000
Reexamination Certificate
active
10706450
ABSTRACT:
The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an alkoxylated fatty alcohol and a fatty acid. The compositions may further include a second alkoxylated fatty alcohol. The deinking compositions also may include a first non-alkoxylated fatty acid and optionally a second alkoxylated fatty acid. Cationic derivatives such as cationic polymers also may be added to the deinking blend.
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Ngome Charles Mesumbe
Rosencrance Scott William
Hug Eric
Kemira Chemicals Inc.
King & Spalding
Lopez Carlos
Sullivan Clark G.
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