AQUEOUS SLUDGES OF FINELY-GROUND FILLERS AND THEIR USE FOR PRODUCING FILLER-CONTAINING PAPER

Aqueous sludges of finely-ground fillers that are at least partially coated with polymers are produced by successively adding to an aqueous filler sludge 0.1 to 5 wt % of a cationic paper consolidating agent, 0.1 to 5 wt % of a non-ionic and/or anionic paper consolidating and/or sizing agent, with r...

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Bibliographic Details
Main Authors AUHORN, WERNER, STANGE, ANDREAS, PFOHL, SIGBERG, LINHART, FRIEDRICH
Format Patent
LanguageEnglish
French
German
Published 28.06.1995
Edition5
Subjects
IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Summary:Aqueous sludges of finely-ground fillers that are at least partially coated with polymers are produced by successively adding to an aqueous filler sludge 0.1 to 5 wt % of a cationic paper consolidating agent, 0.1 to 5 wt % of a non-ionic and/or anionic paper consolidating and/or sizing agent, with respect to the weight of fillers. The cationic consolidating agent is used in such an amount, with respect to the anionic consolidating and/or sizing agents, that the finely-ground fillers have a cationic charge. Also disclosed is the use of the thus obtained aqueous sludges of finely-ground fillers for producing filler-containing paper, cardboard and/or paperboard by adding the aqueous sludges to a paper pulp and by draining the paper pulp.
Bibliography:Application Number: EP19920904667