Paper making and fiber liberation – Processes and products – Non-fiber additive
Reexamination Certificate
2011-05-31
2011-05-31
Daniels, Matthew J (Department: 1741)
Paper making and fiber liberation
Processes and products
Non-fiber additive
C162S158000, C162S164600, C162S181100, C526S314000, C526S317100, C106S400000, C106S401000
Reexamination Certificate
active
07951265
ABSTRACT:
Aqueous slurries of finely divided fillers which are at least partly coated with polymers and which are obtainable by treating aqueous slurries of finely divided fillers with at least one water-soluble amphoteric copolymerwhose structures are identified in the specification are used as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining of the paper stock.
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Smook, G.A., Handbook for Pulp and Paper Technologists, 2nd ed, Angus Wilde Publications, 1992, p. 225.
Baumann Peter
Blum Rainer
Braig Volker
Dupuis Jacques
Esser Anton
BASF - Aktiengesellschaft
Cordray Dennis
Daniels Matthew J
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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