CA1080912A - Cellulosic pulp delignification using bromine - Google Patents

Cellulosic pulp delignification using bromine

Info

Publication number
CA1080912A
CA1080912A CA276,265A CA276265A CA1080912A CA 1080912 A CA1080912 A CA 1080912A CA 276265 A CA276265 A CA 276265A CA 1080912 A CA1080912 A CA 1080912A
Authority
CA
Canada
Prior art keywords
pulp
bromine
chlorine
weight percent
halogenation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA276,265A
Other languages
English (en)
French (fr)
Inventor
Jack F. Mills
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of CA1080912A publication Critical patent/CA1080912A/en
Expired legal-status Critical Current

Links

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA276,265A 1976-04-26 1977-04-15 Cellulosic pulp delignification using bromine Expired CA1080912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/680,245 US4096029A (en) 1976-04-26 1976-04-26 Cellulosic pulp delignification using an acidic bromine-chlorine mixture

Publications (1)

Publication Number Publication Date
CA1080912A true CA1080912A (en) 1980-07-08

Family

ID=24730332

Family Applications (1)

Application Number Title Priority Date Filing Date
CA276,265A Expired CA1080912A (en) 1976-04-26 1977-04-15 Cellulosic pulp delignification using bromine

Country Status (4)

Country Link
US (1) US4096029A (US20080293856A1-20081127-C00150.png)
CA (1) CA1080912A (US20080293856A1-20081127-C00150.png)
FI (1) FI771325A (US20080293856A1-20081127-C00150.png)
SE (1) SE7704743L (US20080293856A1-20081127-C00150.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255233A (en) * 1979-10-18 1981-03-10 Nalco Chemical Company Use of polyacrylic acid in pulp bleaching processes to preserve pulp strength and aid in brightness
US4298428A (en) * 1980-08-07 1981-11-03 Nalco Chemical Company Use of additives in pulp bleaching processes to preserve pulp strength
US4295928A (en) * 1980-08-07 1981-10-20 Nalco Chemical Company Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching
US4600406A (en) * 1985-03-22 1986-07-15 Diversey Wyandotte Corporation Method of low temperature bleaching with reduced amounts of chlorine requiring reduced bleaching intervals
US4740212A (en) * 1985-11-25 1988-04-26 Quantum Technologies, Inc. Process and composition for bleaching cellulosic material with hypochlorous acid
FI99148C (fi) * 1995-12-18 1997-10-10 Metsae Serla Oy Menetelmä paperimassan valmistamiseksi
US5942126A (en) * 1997-01-03 1999-08-24 Nalco Chemical Company Process to manufacture stabilized alkali or alkaline earth metal hypobromite and uses thereof in water treatment to control microbial fouling
US6440476B2 (en) 1997-01-03 2002-08-27 Nalco Chemical Company Method to improve quality and appearance of leafy vegetables by using stabilized bromine
JP6023953B2 (ja) * 2013-07-31 2016-11-09 ナルコジャパン合同会社 古紙パルプの漂白方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US125658A (en) * 1872-04-16 Improvement in processes for bleaching paper pulp
US1821237A (en) * 1928-04-27 1931-09-01 Mead Pulp And Paper Company Control mechanism
NL65914C (US20080293856A1-20081127-C00150.png) * 1946-01-01
US2989519A (en) * 1959-04-23 1961-06-20 Int Paper Canada Bromide as bleaching catalyst
GB940575A (en) * 1960-05-25 1963-10-30 Mini Of Commerce And Industry Flameproofed lignocellulosic articles and process for their manufacture
US3433702A (en) * 1965-06-28 1969-03-18 Hooker Chemical Corp Woodpulp bleaching process

Also Published As

Publication number Publication date
FI771325A (US20080293856A1-20081127-C00150.png) 1977-10-27
US4096029A (en) 1978-06-20
SE7704743L (sv) 1977-10-27

Similar Documents

Publication Publication Date Title
JP2843892B2 (ja) リグノセルロース含有パルプの漂白方法
US4459174A (en) Process for the delignification and bleaching of chemical and semi-chemical cellulosic pulps
US4222819A (en) Process for the acid bleaching of cellulose pulp with peroxides
EP0456626B1 (en) Process for bleaching of lignocellulose-containing material
CA1080912A (en) Cellulosic pulp delignification using bromine
US3874992A (en) Press alkaline extraction of cellulosic pulp
US5034096A (en) Process for bleaching and delignifying cellulose-containing products
JPH08511308A (ja) リグノセルロース材料を脱リグニン化する改良されたオゾン／過酸法
CA2074715C (en) Process for bleaching of ligno-cellulosic material
Brolin et al. On the selectivity of ozone delignification of softwood kraft pulps
US4002526A (en) Oxygen-alkali delignification of low consistency wood pulp
JP3325324B2 (ja) 粗セルロースの脱リグニン化方法
EP0508064A1 (de) Verfahren zur Delignifizierung von cellulosehaltigen Rohstoffen
US4764252A (en) Process for pulping lignocellulosic material with a preoxidized alkaline sulfide pulping liquor containing a cyclic organic compound
US4657633A (en) Delignification and bleaching of a cellulose pulp with an alkalioxygen-hypochlorite single stage sequential extraction
CA1080406A (en) Bleach hydrolysis of pulp with substantially reduced use of chlorine
US4295928A (en) Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching
CA1125955A (en) Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness
US2903326A (en) Improved process for bleaching cellulose pulp using chlorate
US3020196A (en) Production of high brightness high strength wood pulps
CA1227304A (en) Delignification of pulp
NO147761B (no) Fremgangsmaate til bleking av lignocellulosemateriale ved behandling med nitrogen-oksygen-forbindelser
DE4107357C1 (US20080293856A1-20081127-C00150.png)
US3695995A (en) Oxygen-peracetic acid-chlorine dioxide pulp bleaching sequence
JPS61179390A (ja) ケミカルまたはセミ‐ケミカル　バガスパルプの機械的性質の改良方法

Legal Events

Date Code Title Description
MKEX Expiry