CA1250704A - Pulping process - Google Patents

Pulping process

Info

Publication number
CA1250704A
CA1250704A CA000476860A CA476860A CA1250704A CA 1250704 A CA1250704 A CA 1250704A CA 000476860 A CA000476860 A CA 000476860A CA 476860 A CA476860 A CA 476860A CA 1250704 A CA1250704 A CA 1250704A
Authority
CA
Canada
Prior art keywords
liquor
cooking
group
alkyl
cooking liquor
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
CA000476860A
Other languages
English (en)
French (fr)
Inventor
Eric G. Fishlock-Lomax
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1250704A publication Critical patent/CA1250704A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00Pulping cellulose-containing materials
    • D21C3/22Other features of pulping processes
    • D21C3/222Use of compounds accelerating the pulping processes

Landscapes

  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
CA000476860A 1984-03-22 1985-03-19 Pulping process Expired CA1250704A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8407438 1984-03-22
GB848407438A GB8407438D0 (en) 1984-03-22 1984-03-22 Pulping process

Publications (1)

Publication Number Publication Date
CA1250704A true CA1250704A (en) 1989-03-07

Family

ID=10558503

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000476860A Expired CA1250704A (en) 1984-03-22 1985-03-19 Pulping process

Country Status (5)

Country Link
CA (1) CA1250704A (no)
FI (1) FI79358C (no)
GB (2) GB8407438D0 (no)
NO (1) NO164788C (no)
SE (1) SE463463B (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5728265A (en) * 1995-06-12 1998-03-17 Henkel Corporation Process for enhancing white liquor penetration into wood chips by contacting the chips with a mixture of the white liquor and a polymethylalkyl siloxane
CA2217415A1 (en) * 1997-10-20 1999-04-20 Tien-Feng Ling Method for sulfite pulping using surfactants
CA2417791C (en) * 2000-07-27 2008-01-08 Ashland Inc Process for digesting woodchips and digester additives
FI122815B (fi) 2005-04-18 2012-07-13 Cerefi Oy Menetelmä lignoselluloosamateriaalien ja niistä saatujen jakeiden fraktioimiseksi

Also Published As

Publication number Publication date
GB2155966A (en) 1985-10-02
GB8507304D0 (en) 1985-05-01
SE8501338D0 (sv) 1985-03-19
FI851171L (fi) 1985-09-23
NO164788C (no) 1990-11-14
FI79358B (fi) 1989-08-31
SE463463B (sv) 1990-11-26
SE8501338L (sv) 1985-09-23
FI851171A0 (fi) 1985-03-22
FI79358C (fi) 1989-12-11
NO851130L (no) 1985-09-23
NO164788B (no) 1990-08-06
GB2155966B (en) 1987-12-09
GB8407438D0 (en) 1984-05-02

Similar Documents

Publication Publication Date Title
AU620242B2 (en) Producing pulp
US3888727A (en) Treatment of lignocellulosic material in an alkaline pulping liquor containing anthraquinone sulphonic acid followed by oxygen delignification
AU600756B2 (en) Improved process for the bleaching of cellulosic pulps using hydrogen peroxide
EP0832319B1 (en) Process for enhancing white liquor penetration into wood chips
US4091749A (en) Alkaline pulping of lignocellulosic material with amine pretreatment
CA1250704A (en) Pulping process
CA1110412A (en) Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound
US2927082A (en) Peroxide bleaching compositions and their use
US4067768A (en) Alkaline pulping of lignocellulosic material with amine and sulfate pretreatment
AU641478B2 (en) Process for the preparation of bleached high-yield pulps
US3384534A (en) Bleaching of wood pulps with thiourea dioxide
US7081183B2 (en) Method of deresinating pulp using alkyl alcohol alkoxylate surfactants
US3479249A (en) Pretreatment of wood pulps with an alkaline solution of formaldehyde
US3795574A (en) Impregnation of wood with a formaldehyde free alkaline solution of sodium hydroxide at a ph between 12.4 and 13
EP0041401B1 (en) Method and mixture for producing cellulosic pulps
US5609723A (en) Oxygen bleaching process for cellulocis pulps with a polyhydric alcohol cellulose protector
CA1120210A (en) Bleaching of pulp
US4134787A (en) Delignification of lignocellulosic material with an alkaline liquor containing a cyclic amino compound
US8591702B2 (en) Increasing alkaline pulping yield for softwood with metal ions
FI71780B (fi) Kokningsfoerfarande foer lignocellulosamaterial i och foer framstaellning av pappersmassa
US3401076A (en) Increasing kraft pulp yield with hydroxylamine
US4484980A (en) Process for bleaching paper pulp using caffeine or guanine as a viscosity stabilizers
US3929559A (en) Stabilization of cellulosic material by treatment with ferricyanide ion
US5645688A (en) Bleaching compositions and processes employing sulfamates and polyaminocarboxylic acids
KR100228740B1 (ko) 고수율기계펄프의 표백방법

Legal Events

Date Code Title Description
MKEX Expiry