Method of whitening lignin-containing pulp during manufacture

A process to increase the whiteness of a lignin-containing pulp is disclosed which comprises adding to an aqueous slurry comprising a lignin-containing pulp, during pulp manufacture, a fluorescent whitening agent and optionally a chelating agent.

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Bibliographic Details
Main Authors RANDALL BRUCE NELSON, OLLI JUHANI JOKINEN, PETER ROHRINGER
Format Patent
LanguageEnglish
Published 11.03.1999
Edition6
Subjects
APPARATUS THEREFOR
IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
PULP COMPOSITIONS
REGENERATION OF PULPING LIQUORS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Abstract A process to increase the whiteness of a lignin-containing pulp is disclosed which comprises adding to an aqueous slurry comprising a lignin-containing pulp, during pulp manufacture, a fluorescent whitening agent and optionally a chelating agent.
AbstractList A process to increase the whiteness of a lignin-containing pulp is disclosed which comprises adding to an aqueous slurry comprising a lignin-containing pulp, during pulp manufacture, a fluorescent whitening agent and optionally a chelating agent.
Author PETER ROHRINGER
RANDALL BRUCE NELSON
OLLI JUHANI JOKINEN
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Snippet A process to increase the whiteness of a lignin-containing pulp is disclosed which comprises adding to an aqueous slurry comprising a lignin-containing pulp,...
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SubjectTerms APPARATUS THEREFOR
IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
PULP COMPOSITIONS
REGENERATION OF PULPING LIQUORS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
Title Method of whitening lignin-containing pulp during manufacture
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