CA986662A - Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping - Google Patents

Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping

Info

Publication number
CA986662A
CA986662A CA170,283A CA170283A CA986662A CA 986662 A CA986662 A CA 986662A CA 170283 A CA170283 A CA 170283A CA 986662 A CA986662 A CA 986662A
Authority
CA
Canada
Prior art keywords
pretreatment
lignocellulosic material
alkaline pulping
anthraquinone
salts
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
CA170,283A
Other versions
CA170283S (en
Inventor
David L. Mccandless
Hans E. Worster
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.)
MacMillan Bloedel Ltd
Original Assignee
MacMillan Bloedel Ltd
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 MacMillan Bloedel Ltd filed Critical MacMillan Bloedel Ltd
Priority to CA170,283A priority Critical patent/CA986662A/en
Application granted granted Critical
Publication of CA986662A publication Critical patent/CA986662A/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
CA170,283A 1973-05-01 1973-05-01 Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping Expired CA986662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA170,283A CA986662A (en) 1973-05-01 1973-05-01 Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA170,283A CA986662A (en) 1973-05-01 1973-05-01 Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping

Publications (1)

Publication Number Publication Date
CA986662A true CA986662A (en) 1976-04-06

Family

ID=4096592

Family Applications (1)

Application Number Title Priority Date Filing Date
CA170,283A Expired CA986662A (en) 1973-05-01 1973-05-01 Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping

Country Status (1)

Country Link
CA (1) CA986662A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754991A1 (en) * 1976-12-10 1978-06-15 Honshu Paper Co Ltd METHOD FOR MANUFACTURING PULP
US4127439A (en) 1977-01-28 1978-11-28 Crown Zellerbach Corporation Pretreatment of lignocellulose with anthraquinone prior to pulping
FR2436845A1 (en) * 1978-09-22 1980-04-18 Mo Och Domsjoe Ab PROCESS FOR THE PREPARATION OF CELLULOSE PULP BY DELIGNIFICATION OF LIGNOCELLULOSIC MATERIALS
EP0010451A1 (en) * 1978-10-25 1980-04-30 C.I.L. Inc. Process for the delignification of lignocellulosic material and products thereof
AU641551B2 (en) * 1990-09-14 1993-09-23 Akio Mita Process for producing chemical pulp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754991A1 (en) * 1976-12-10 1978-06-15 Honshu Paper Co Ltd METHOD FOR MANUFACTURING PULP
USRE32943E (en) * 1976-12-10 1989-06-06 Honshu Seishi Kabushiki Kaisha Process for cooking lignocellulosic material in the presence of hydroxyanthracenes and derivatives thereof
US4127439A (en) 1977-01-28 1978-11-28 Crown Zellerbach Corporation Pretreatment of lignocellulose with anthraquinone prior to pulping
FR2436845A1 (en) * 1978-09-22 1980-04-18 Mo Och Domsjoe Ab PROCESS FOR THE PREPARATION OF CELLULOSE PULP BY DELIGNIFICATION OF LIGNOCELLULOSIC MATERIALS
US4561936A (en) * 1978-09-22 1985-12-31 Mo Och Domsjo Aktiebolag Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion both in the presence of a redox additive
EP0010451A1 (en) * 1978-10-25 1980-04-30 C.I.L. Inc. Process for the delignification of lignocellulosic material and products thereof
AU641551B2 (en) * 1990-09-14 1993-09-23 Akio Mita Process for producing chemical pulp

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