|
US4030969A
(en)
*
|
1972-06-13 |
1977-06-21 |
Defibrator Ab |
Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle
|
|
US3830690A
(en)
*
|
1972-08-03 |
1974-08-20 |
Virginia Chemicals Inc |
Groundwood pulp bleaching with sodium hydrosulfite in the presence of sodium salts of glucono-citrate complexes of polyaminoversenic acid
|
|
US3874993A
(en)
*
|
1972-10-06 |
1975-04-01 |
Virginia Chemicals Inc |
Groundwood pulp bleaching with sodium hydrosulfite in the presence of benzene polycarboxylates
|
|
FI61215B
(fi)
*
|
1976-11-23 |
1982-02-26 |
Defibrator Ab |
Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial
|
|
SE416481B
(sv)
*
|
1977-05-02 |
1981-01-05 |
Mo Och Domsjoe Ab |
Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
|
|
SE409476B
(sv)
*
|
1978-02-17 |
1979-08-20 |
Sca Development Ab |
Sett for fraffinering av lignocellulosahaltigt material
|
|
US4404061A
(en)
*
|
1981-08-17 |
1983-09-13 |
International Paper Company |
Bleaching of lignocellulosic materials with monopersulfuric acid or its salts
|
|
US4475984A
(en)
*
|
1981-08-17 |
1984-10-09 |
International Paper Co. |
Process for pretreating wood chips with monoperoxy sulfuric acid or its salts prior to alkaline pulping
|
|
ZA837927B
(en)
*
|
1983-05-23 |
1985-01-30 |
Process Evaluation Devel |
Thermomechanical digestion process using bleachants
|
|
SE456430B
(sv)
*
|
1985-11-06 |
1988-10-03 |
Sunds Defibrator |
Sett for framstellning av mekanisk massa
|
|
DE3610940A1
(de)
*
|
1986-03-04 |
1987-09-10 |
Escher Wyss Gmbh |
Hochtemperatur-hochkonsistenz-schnellbleiche
|
|
US4863564A
(en)
*
|
1987-12-23 |
1989-09-05 |
Virginia Chemicals Inc. |
Method of bleaching high yield pulp by using dithionite ion and excluding oxygen
|
|
GB2215350B
(en)
*
|
1988-03-16 |
1992-05-20 |
Thiokol Morton Inc |
Process for bleaching mechanical wood pulp
|
|
SE461919B
(sv)
*
|
1988-08-30 |
1990-04-09 |
Cellwood Machinery Ab |
Saett vid behandling av traefibermassa, saerskilt innehaallande returpapper, samt disperger foer genomfoerande av foerfarandet
|
|
DE19704183A1
(de)
*
|
1997-02-05 |
1998-08-06 |
Voith Sulzer Stoffaufbereitung |
Verfahren und Vorrichtung zur reduzierenden Bleiche von hochkonsistentem Papierfaserstoff
|
|
SE513790C2
(sv)
*
|
1999-03-08 |
2000-11-06 |
Mo Och Domsjoe Ab |
Blekning av mekanisk massa med reducerande blekmedel
|
|
US7967948B2
(en)
*
|
2006-06-02 |
2011-06-28 |
International Paper Company |
Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents
|
|
CN101678557B
(zh)
*
|
2007-04-24 |
2014-07-02 |
巴斯夫欧洲公司 |
生产漂白的木材颗粒和浅色至白色木料的方法
|