CA902861A
(en)
*
|
1969-11-27 |
1972-06-20 |
Pulp And Paper Research Institute Of Canada |
Bleaching of cellulosic pulp
|
US4196043A
(en)
*
|
1970-12-21 |
1980-04-01 |
Scott Paper Company |
Kraft pulp bleaching and recovery process
|
US4119486A
(en)
*
|
1975-08-14 |
1978-10-10 |
Westvaco Corporation |
Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
|
JPS5324401A
(en)
*
|
1976-08-12 |
1978-03-07 |
Seisan Kaihatsu Kagaku Kenkyus |
Process for multistage pulp bleaching
|
US4216054A
(en)
|
1977-09-26 |
1980-08-05 |
Weyerhaeuser Company |
Low-consistency ozone delignification
|
US4410397A
(en)
*
|
1978-04-07 |
1983-10-18 |
International Paper Company |
Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
|
US4283251A
(en)
*
|
1980-01-24 |
1981-08-11 |
Scott Paper Company |
Ozone effluent bleaching
|
FR2620744A1
(fr)
*
|
1987-09-17 |
1989-03-24 |
Degremont |
Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
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US5181989A
(en)
*
|
1990-10-26 |
1993-01-26 |
Union Camp Patent Holdings, Inc. |
Reactor for bleaching high consistency pulp with ozone
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US5211811A
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*
|
1989-02-15 |
1993-05-18 |
Union Camp Patent Holding, Inc. |
Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
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(en)
*
|
1989-02-15 |
1993-02-23 |
Union Camp Patent Holding, Inc. |
Process for high consistency oxygen delignification followed by ozone relignification
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(en)
*
|
1990-10-26 |
1995-12-05 |
Union Camp Patent Holding, Inc. |
Reactor for bleaching high consistency pulp with ozone
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US5409570A
(en)
*
|
1989-02-15 |
1995-04-25 |
Union Camp Patent Holding, Inc. |
Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
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AT393701B
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*
|
1989-12-22 |
1991-12-10 |
Schmidding Wilh Gmbh & Co |
Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
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US5441603A
(en)
*
|
1990-05-17 |
1995-08-15 |
Union Camp Patent Holding, Inc. |
Method for chelation of pulp prior to ozone delignification
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US5164043A
(en)
|
1990-05-17 |
1992-11-17 |
Union Camp Patent Holding, Inc. |
Environmentally improved process for bleaching lignocellulosic materials with ozone
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US5164044A
(en)
*
|
1990-05-17 |
1992-11-17 |
Union Camp Patent Holding, Inc. |
Environmentally improved process for bleaching lignocellulosic materials with ozone
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US5174861A
(en)
*
|
1990-10-26 |
1992-12-29 |
Union Camp Patent Holdings, Inc. |
Method of bleaching high consistency pulp with ozone
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US5520783A
(en)
*
|
1990-10-26 |
1996-05-28 |
Union Camp Patent Holding, Inc. |
Apparatus for bleaching high consistency pulp with ozone
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CA2068981C
(en)
*
|
1991-05-24 |
1996-08-27 |
Michael A. Pikulin |
Two stage pulp bleaching reactor
|
US5554259A
(en)
*
|
1993-10-01 |
1996-09-10 |
Union Camp Patent Holdings, Inc. |
Reduction of salt scale precipitation by control of process stream Ph and salt concentration
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US20030131958A1
(en)
*
|
2001-11-30 |
2003-07-17 |
Thomas Jaschinski |
Use of ozone for increasing the wet strength of paper and nonwoven
|