CA1129157A - Process for improving the colour of sulphate pulp and deodorizing same - Google Patents

Process for improving the colour of sulphate pulp and deodorizing same

Info

Publication number: CA1129157A
Authority: CA; Canada
Prior art keywords: pulp; peroxide; kraft; sulphate; weight
Prior art date: 1979-02-16
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

CA345,493A

Other languages

English (en)

French (fr)

Inventor

Horst Kruger

Wilhelm Berndt

Jakob Wink

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.)

Evonik Operations GmbH

Original Assignee

Degussa GmbH

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.)

1979-02-16

Filing date

1980-02-13

Publication date

1982-08-10

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6063083&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1129157(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1980-02-13 Application filed by Degussa GmbH filed Critical Degussa GmbH

1982-08-10 Application granted granted Critical

1982-08-10 Publication of CA1129157A publication Critical patent/CA1129157A/en

Status Expired legal-status Critical Current

Links

QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 28
229910021653 sulphate ion Inorganic materials 0.000 title claims abstract description 28
238000000034 method Methods 0.000 title claims abstract description 19
230000008569 process Effects 0.000 title claims abstract description 19
230000001877 deodorizing effect Effects 0.000 title claims description 5
239000002655 kraft paper Substances 0.000 claims abstract description 21
150000002978 peroxides Chemical class 0.000 claims abstract description 21
238000005406 washing Methods 0.000 claims abstract description 13
238000004519 manufacturing process Methods 0.000 claims abstract description 11
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 9
238000009792 diffusion process Methods 0.000 claims abstract description 4
241000294754 Macroptilium atropurpureum Species 0.000 claims description 8
238000009835 boiling Methods 0.000 claims description 6
239000007832 Na2SO4 Substances 0.000 claims description 5
PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
235000011152 sodium sulphate Nutrition 0.000 claims description 5
238000005282 brightening Methods 0.000 claims description 4
239000002253 acid Substances 0.000 claims description 3
239000007864 aqueous solution Substances 0.000 claims description 2
239000005022 packaging material Substances 0.000 abstract description 6
235000013305 food Nutrition 0.000 abstract description 5
238000000354 decomposition reaction Methods 0.000 abstract 1
238000001704 evaporation Methods 0.000 abstract 1
230000008020 evaporation Effects 0.000 abstract 1
238000004061 bleaching Methods 0.000 description 4
238000004806 packaging method and process Methods 0.000 description 4
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
230000002349 favourable effect Effects 0.000 description 3
239000008267 milk Substances 0.000 description 3
210000004080 milk Anatomy 0.000 description 3
235000013336 milk Nutrition 0.000 description 3
238000003860 storage Methods 0.000 description 3
239000000725 suspension Substances 0.000 description 3
LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
150000001875 compounds Chemical class 0.000 description 2
239000000463 material Substances 0.000 description 2
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
239000005864 Sulphur Substances 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
239000007844 bleaching agent Substances 0.000 description 1
238000004332 deodorization Methods 0.000 description 1
238000001035 drying Methods 0.000 description 1
125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
238000009472 formulation Methods 0.000 description 1
229960002163 hydrogen peroxide Drugs 0.000 description 1
150000007522 mineralic acids Chemical class 0.000 description 1
239000000203 mixture Substances 0.000 description 1
230000009965 odorless effect Effects 0.000 description 1
150000007524 organic acids Chemical class 0.000 description 1
235000005985 organic acids Nutrition 0.000 description 1
239000000123 paper Substances 0.000 description 1
230000000149 penetrating effect Effects 0.000 description 1
230000002028 premature Effects 0.000 description 1
230000035484 reaction time Effects 0.000 description 1
238000012216 screening Methods 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
239000000243 solution Substances 0.000 description 1
239000003381 stabilizer Substances 0.000 description 1
235000011149 sulphuric acid Nutrition 0.000 description 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
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Artificial Filaments (AREA)

CA345,493A 1979-02-16 1980-02-13 Process for improving the colour of sulphate pulp and deodorizing same Expired CA1129157A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2905936A DE2905936B1 (de)	1979-02-16	1979-02-16	Verfahren zum Aufhellen und Desodorieren von Sulfatzellstoff
DEP2905936.7-45		1979-02-16

Publications (1)

Publication Number	Publication Date
CA1129157A true CA1129157A (en)	1982-08-10

Family

ID=6063083

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA345,493A Expired CA1129157A (en)	1979-02-16	1980-02-13	Process for improving the colour of sulphate pulp and deodorizing same

Country Status (6)

Country	Link
EP (1)	EP0014753B1 (de)
AT (1)	ATE2019T1 (de)
CA (1)	CA1129157A (de)
DE (2)	DE2905936B1 (de)
FI (1)	FI68684C (de)
NO (1)	NO793959L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0073872A1 (de) *	1981-09-03	1983-03-16	Billerud Uddeholm AB	Chemisches Verfahren in der Papierherstellung
SE442414B (sv) *	1981-09-22	1985-12-23	Holmens Bruk Ab	Sett att minska eller inhibera morkfergningen av massa eller papper i bakvattensystem
US4559103A (en) *	1982-08-05	1985-12-17	Honshu Seishi Kabushiki Kaisha	Packaging paper and packaging material for packaging metallic material and method of producing the same
RU2504375C1 (ru) *	2012-05-23	2014-01-20	Галина Викторовна Сукоян	Фармацевтический состав для лечения заболеваний, связанных с эндотелиальной дисфункцией

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1454339A (en) *	1921-11-28	1923-05-08	Brown Co	Method of treating cellulose pulp to remove odors therefrom
US1632802A (en) *	1926-08-10	1927-06-21	Brown Co	Process of and apparatus for treating fiber
US1774403A (en) *	1926-09-16	1930-08-26	Brown Co	Process of producing fiber of high alpha cellulose content
US2030384A (en) *	1934-10-18	1936-02-11	Nekoosa Edwards Paper Co	Method of bleaching pulp
BE450336A (de) *	1942-12-09	1943-05-31
FR2192981B1 (de) *	1972-07-21	1988-11-10	Air Liquide Fr
IT1071347B (it) *	1976-03-12	1985-04-02	Interox Sa	Processo per la disinfezione di carta vecchia

1979
- 1979-02-16 DE DE2905936A patent/DE2905936B1/de not_active Withdrawn
- 1979-11-27 FI FI793720A patent/FI68684C/fi not_active IP Right Cessation
- 1979-12-04 DE DE7979104899T patent/DE2964319D1/de not_active Expired
- 1979-12-04 AT AT79104899T patent/ATE2019T1/de not_active IP Right Cessation
- 1979-12-04 EP EP79104899A patent/EP0014753B1/de not_active Expired
- 1979-12-05 NO NO793959A patent/NO793959L/no unknown
1980
- 1980-02-13 CA CA345,493A patent/CA1129157A/en not_active Expired

Also Published As

Publication number	Publication date
DE2905936B1 (de)	1980-04-30
DE2964319D1 (en)	1983-01-20
FI68684B (fi)	1985-06-28
EP0014753A1 (de)	1980-09-03
FI68684C (fi)	1985-10-10
EP0014753B1 (de)	1982-12-15
ATE2019T1 (de)	1982-12-15
FI793720A7 (fi)	1980-08-17
NO793959L (no)	1980-08-19

Legal Events

Date	Code	Title	Description
1999-08-10	MKEX	Expiry

Publication	Publication Date	Title
US2587064A (en)	1952-02-26	Method of bleaching wood pulp
US3663357A (en)	1972-05-16	Bleaching of mechanical cellulosic pulp with ozone in the presence of a peroxygen compound
US2466633A (en)	1949-04-05	Method of bleaching cellulosic pulp
MX9201966A (es)	1992-11-01	Proceso para blanqueo de pasta que contiene lignocelulosa.
US2165270A (en)	1939-07-11	Cotton bleaching
US4938842A (en)	1990-07-03	High consistency peroxide bleaching
GB2227759A (en)	1990-08-08	Hydrogen peroxide bleaching process
US5639348A (en)	1997-06-17	Bleaching compositions comprising sulfamates and borates or gluconates and processes
RU96100538A (ru)	1998-03-10	Способ отбеливания целлюлозы
US2882965A (en)	1959-04-21	High viscosity, high percentage alpha cellulose from sulfite pulp
CA1129157A (en)	1982-08-10	Process for improving the colour of sulphate pulp and deodorizing same
USH479H (en)	1988-06-07	Wood pulp bleaching process
US4731161A (en)	1988-03-15	Semibleaching liquor for Kraft paper products
US5698075A (en)	1997-12-16	Process for bleaching a chemical paper pulp in an oxygen-peroxymonosulfuric acid-hydrogen peroxide sequence
US3384534A (en)	1968-05-21	Bleaching of wood pulps with thiourea dioxide
US2195302A (en)	1940-03-26	Bleaching pulp
US2779656A (en)	1957-01-29	Bleaching of kraft pulp
NO149394B (no)	1984-01-02	Fremgangsmaate for aa fjerne opploest metallisk natrium fra aluminiumsmelter
US1768819A (en)	1930-07-01	Bleaching
JP3325324B2 (ja)	2002-09-17	粗セルロースの脱リグニン化方法
US2199376A (en)	1940-04-30	Bleaching of ground wood pulp
US1310694A (en)	1919-07-22	Vance p
US1795757A (en)	1931-03-10	Method of bleaching and process for preparing liquors therefor
NO884398L (no)	1989-04-06	Fremgangsmaate for bleking av mekanisk masse.
US2026068A (en)	1935-12-31	Process for the improvement of cellulose