ITRM910670A0 - Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131) - Google Patents
Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131)Info
- Publication number
- ITRM910670A0 ITRM910670A0 IT91RM670A ITRM910670A ITRM910670A0 IT RM910670 A0 ITRM910670 A0 IT RM910670A0 IT 91RM670 A IT91RM670 A IT 91RM670A IT RM910670 A ITRM910670 A IT RM910670A IT RM910670 A0 ITRM910670 A0 IT RM910670A0
- Authority
- IT
- Italy
- Prior art keywords
- procedure
- case
- wood pulp
- elementary chlorine
- whitening wood
- Prior art date
Links
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 title 1
- 229920001131 Pulp (paper) Polymers 0.000 title 1
- 229910052801 chlorine Inorganic materials 0.000 title 1
- 239000000460 chlorine Substances 0.000 title 1
- 230000002087 whitening effect Effects 0.000 title 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58074390A | 1990-09-11 | 1990-09-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM910670A0 true ITRM910670A0 (it) | 1991-09-10 |
ITRM910670A1 ITRM910670A1 (it) | 1993-03-10 |
IT1249694B IT1249694B (it) | 1995-03-09 |
Family
ID=24322372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM910670A IT1249694B (it) | 1990-09-11 | 1991-09-10 | Procedimento per la sbianca di pasta di legno senza impiego di cloro elementare. (caso 156-7131) |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPH04245988A (it) |
CA (1) | CA2050986A1 (it) |
DE (1) | DE4129739A1 (it) |
FR (1) | FR2666597B1 (it) |
GB (1) | GB2248075B (it) |
IT (1) | IT1249694B (it) |
SE (1) | SE9102589L (it) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06116889A (ja) * | 1992-09-30 | 1994-04-26 | New Oji Paper Co Ltd | 木材化学パルプの漂白法 |
JP3262646B2 (ja) * | 1993-07-09 | 2002-03-04 | 日本製紙株式会社 | パルプの漂白方法 |
JPH0734396A (ja) * | 1993-07-15 | 1995-02-03 | Nippon Paper Ind Co Ltd | 積層板用原紙 |
JP3244887B2 (ja) * | 1993-10-21 | 2002-01-07 | 三菱製紙株式会社 | 食品容器用の紙 |
FI935187A (fi) * | 1993-11-22 | 1995-05-23 | Valtion Teknillinen | Menetelmä valkaistun selluloosamassan valmistamiseksi |
JP3610686B2 (ja) * | 1996-07-31 | 2005-01-19 | 王子製紙株式会社 | 印刷用塗被紙の製造方法 |
EP1325961A1 (en) * | 1997-06-10 | 2003-07-09 | Danisco Sweeteners Oy | A process for the production of crystalline xylose |
CA2432788C (en) | 2000-12-22 | 2008-10-07 | Iogen Bio-Products Corporation | Alkaline extraction stages comprising xylanase |
WO2002057541A2 (en) | 2001-01-18 | 2002-07-25 | Iogen Bio-Products Corporation | Use of xylanase in pulp bleaching |
AU2002351904A1 (en) * | 2001-12-03 | 2003-06-17 | Iogen Bio-Products Corporation | Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof |
CN100346030C (zh) * | 2002-03-06 | 2007-10-31 | 埃欧金生物制品公司 | 化学纸浆的木聚糖酶处理 |
WO2009138090A2 (en) * | 2008-05-14 | 2009-11-19 | Rådet For Agroindustri | A process for the production of hydrolysed plant material |
CA2821954C (en) | 2010-12-22 | 2019-02-26 | Akzo Nobel Chemicals International B.V. | Process for improving chlorine dioxide bleaching of pulp |
CN102182094B (zh) * | 2011-04-12 | 2012-03-14 | 山东轻工业学院 | 一种沙柳硫酸盐浆漂白工艺 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE20680T1 (de) * | 1982-04-30 | 1986-07-15 | Ici Plc | Delignifizierung von lignocellulosematerial. |
FI81395B (fi) * | 1988-03-14 | 1990-06-29 | Cultor Oy | Foerfarande foer blekning av cellulosamassa. |
DE68914112T2 (de) * | 1988-11-23 | 1994-08-04 | Sandoz Ag | Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff. |
US5179021A (en) * | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
FI90888B (fi) * | 1989-02-14 | 1993-12-31 | Enso Gutzeit Oy | Menetelmä selluloosamassan valkaisemiseksi |
FI86896B (fi) * | 1989-05-04 | 1992-07-15 | Enso Gutzeit Oy | Foerfarande foer blekning av cellulosamassa. |
DK420289D0 (da) * | 1989-08-25 | 1989-08-25 | Novo Nordisk As | Fremgangsmaade til behandling af lignocellulosepulp |
NZ235679A (en) * | 1989-10-18 | 1993-01-27 | Int Paper Co | Bleaching lignocellulosic pulp using (a) treatment with xylanase and (b) one or more chemical bleaching stages |
-
1991
- 1991-09-06 DE DE4129739A patent/DE4129739A1/de not_active Withdrawn
- 1991-09-09 SE SE9102589A patent/SE9102589L/ not_active Application Discontinuation
- 1991-09-09 GB GB9119218A patent/GB2248075B/en not_active Expired - Fee Related
- 1991-09-09 CA CA002050986A patent/CA2050986A1/en not_active Abandoned
- 1991-09-10 IT ITRM910670A patent/IT1249694B/it active IP Right Grant
- 1991-09-10 JP JP3230395A patent/JPH04245988A/ja active Pending
- 1991-09-11 FR FR9111356A patent/FR2666597B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2666597B1 (fr) | 1996-10-31 |
CA2050986A1 (en) | 1992-03-12 |
GB2248075B (en) | 1994-06-29 |
FR2666597A1 (fr) | 1992-03-13 |
GB9119218D0 (en) | 1991-10-23 |
SE9102589L (sv) | 1992-03-12 |
IT1249694B (it) | 1995-03-09 |
GB2248075A (en) | 1992-03-25 |
ITRM910670A1 (it) | 1993-03-10 |
JPH04245988A (ja) | 1992-09-02 |
SE9102589D0 (sv) | 1991-09-09 |
DE4129739A1 (de) | 1992-03-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950929 |