METHOD OF BLEACHING PAPER PULP BY FINAL OZONE TREATMENT AT HIGH TEMPERATURE Russian patent published in 2012 - IPC D21C9/153 

Abstract RU 2439232 C2

FIELD: chemistry.

SUBSTANCE: method for treating a prebleached cellulose pulp involves a step for ozone treatment of the pulp, carried out at a temperature higher than 70°C.

EFFECT: invention increases whiteness of cellulose without reducing its quality.

9 cl, 3 ex, 3 dwg

Similar patents RU2439232C2

Title Year Author Number
MULTISTEP METHOD OF CELLULOSE WHITENING 1990
  • Kherbert Siksta[At]
  • Gerkhard Gettsinger[At]
  • Anton Kheglinger[At]
  • Peter Khendel[At]
  • Vilfrid Rjukl[At]
  • Val'Ter Peter[At]
  • Fridrikh Kurts[At]
  • Al'Fred Shrittvizer[At]
  • Manfred Shneevajzts[At]
RU2044809C1
METHOD OF PREPARING BLEACHED PULP AND A METHOD FOR DELIGNIFICATION AND BLEACHING OF LIGNOCELLULOSE MATERIAL 1990
  • Brjus F.Griggs[Us]
  • Tomas P.Gehndek[Us]
  • Majkl A.Pikulin[Us]
  • Allen Rouzen[Us]
RU2102547C1
USE OF SURFACTANTS FOR PULP PROCESSING AND IMPROVEMENT OF CRAFT PULP INTRODUCTION IN FIBRE FOR OBTAINING VISCOOSE AND OTHER SECONDARY FIBRE PRODUCTS 2013
  • Nonni Artur Dzhejms
  • Kurshen Charlz Edvard
  • Sloun Kristofer Majkl
  • Kempbell Filip Rid
  • Daudl Stiven Ched
  • Engl Dzhoel Mark
RU2636306C2
METHOD OF MULTISTEP CELLULOSE WHITENING 1990
  • Per G.Lundgren[Se]
  • Lillemor K.Khol'Tinger[Se]
  • Juri J.Basta[Se]
  • Mari R.Samuel'Sson
RU2026437C1
METHOD FOR DELIGNIFICATION OF CELLULOSE MATERIALS 2021
  • Demyantseva Elena Yurevna
  • Lipin Vadim Apollonovich
  • Smit Regina Anatolevna
  • Fedoskin Ivan Alekseevich
RU2776126C1
METHOD OF DELIGNIFICATION AND WHITENING CHEMICALLY BOILED LIGNOCELLULOSE-CONTAINING PULP 1992
  • Lennart Andersson[Se]
  • Jiri Basta[Se]
  • Lillemor Khol'Tinger[Se]
  • Jan Kheek[Se]
RU2039141C1
METHOD FOR TREATING PULP BY TREATMENT WITH OZONE IN PRESENCE OF MAGNESIUM IONS 2014
  • Puje Frederik
  • Lashenal Dominik
  • Shira Kristin
RU2670540C2
METHOD OF DELIGNIFICATION AND BLEACHING OF CELLULOSE 1992
  • Lennart Andersson[Se]
  • Jiri Basta[Se]
  • Lillemor Khol'Tinger[Se]
  • Jan Kheek[Se]
RU2071519C1
SOFTWOOD CRAFT FIBRE WITH IMPROVED WHITENESS AND BRIGHTNESS AND METHODS OF ITS PRODUCTION AND USE 2012
  • Nonni Artur Dzh.
  • Kurshen Charlz E.
  • Kempbell Filip R.
  • Daudl Stiven S.
  • Engl Dzhoel M.
  • Stoun Kristofer M.
RU2608686C2
METHOD FOR PRODUCING BLEACHED LIGNOCELLULOSE MASS (ITS VARIANTS) 0
  • Shiyam S.Bkhattachari
  • Dorejn M.Devitt
  • Uilfrid Fuks
  • Villyam L.Olsen
SU1838488A3

RU 2 439 232 C2

Authors

Pipon Gijom

Lashenal' Dominik

Shira Kristin

Ostashi Zhan-Kristof

Rid Akhim

Dates

2012-01-10Published

2007-12-11Filed