FR2457338A1 - Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln. - Google Patents

Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln.

Info

Publication number
FR2457338A1
FR2457338A1 FR7913555A FR7913555A FR2457338A1 FR 2457338 A1 FR2457338 A1 FR 2457338A1 FR 7913555 A FR7913555 A FR 7913555A FR 7913555 A FR7913555 A FR 7913555A FR 2457338 A1 FR2457338 A1 FR 2457338A1
Authority
FR
France
Prior art keywords
soln
cellulosic material
material during
alkaline treatment
carboxylated polymer
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.)
Withdrawn
Application number
FR7913555A
Other languages
French (fr)
Inventor
William Reid Logan
Pierre Ledoux
Lucien Plumet
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.)
Solvay Chimie SA
Original Assignee
Interox SA
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 Interox SA filed Critical Interox SA
Priority to FR7913555A priority Critical patent/FR2457338A1/en
Publication of FR2457338A1 publication Critical patent/FR2457338A1/en
Withdrawn legal-status Critical Current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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Abstract

Cellulosic material are protected during their treatment with an aq. alkaline soln. by adding a hydroxycarboxylated polymer to the soln. Polymer pref. has units of formula (I) (where R1 and R2 are H (pref.) or 1-3C alkyl opt. substd. by OH or halogen and are opt. identical, and M is H, alkali metal or ammonium.) Partic used for protecting cellulose chains against degradation in the prodn. of paper pulp.
FR7913555A 1979-05-25 1979-05-25 Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln. Withdrawn FR2457338A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7913555A FR2457338A1 (en) 1979-05-25 1979-05-25 Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7913555A FR2457338A1 (en) 1979-05-25 1979-05-25 Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln.

Publications (1)

Publication Number Publication Date
FR2457338A1 true FR2457338A1 (en) 1980-12-19

Family

ID=9225940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7913555A Withdrawn FR2457338A1 (en) 1979-05-25 1979-05-25 Protecting cellulosic material during alkaline treatment - by adding hydroxy-carboxylated polymer to the soln.

Country Status (1)

Country Link
FR (1) FR2457338A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601025A1 (en) * 1986-07-03 1988-01-08 Sandoz Sa STABILIZATION OF PEROXIDE-BASED BLEACHING AGENTS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084031A5 (en) * 1970-03-02 1971-12-17 Mo Och Domsjoe Ab
FR2342365A1 (en) * 1976-02-25 1977-09-23 Solvay PROCESS FOR THE STABILIZATION OF SOLUTIONS OF PEROXIDE COMPOUNDS USED FOR BLEACHING

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084031A5 (en) * 1970-03-02 1971-12-17 Mo Och Domsjoe Ab
FR2342365A1 (en) * 1976-02-25 1977-09-23 Solvay PROCESS FOR THE STABILIZATION OF SOLUTIONS OF PEROXIDE COMPOUNDS USED FOR BLEACHING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601025A1 (en) * 1986-07-03 1988-01-08 Sandoz Sa STABILIZATION OF PEROXIDE-BASED BLEACHING AGENTS

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Legal Events

Date Code Title Description
ST Notification of lapse