FR880221A - Cellulose improvement process - Google Patents

Cellulose improvement process

Info

Publication number
FR880221A
FR880221A FR880221DA FR880221A FR 880221 A FR880221 A FR 880221A FR 880221D A FR880221D A FR 880221DA FR 880221 A FR880221 A FR 880221A
Authority
FR
France
Prior art keywords
cellulose
improvement process
improvement
cellulose improvement
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
Other languages
French (fr)
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.)
SU DDEUTSCHE ZELLWOLLE AG
Original Assignee
SU DDEUTSCHE ZELLWOLLE AG
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 SU DDEUTSCHE ZELLWOLLE AG filed Critical SU DDEUTSCHE ZELLWOLLE AG
Application granted granted Critical
Publication of FR880221A publication Critical patent/FR880221A/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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
    • C07C37/055—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/20—Contact mechanisms of dynamic converters
    • H02M1/26—Contact mechanisms of dynamic converters incorporating cam-operated contacts
FR880221D 1941-05-13 1942-03-14 Cellulose improvement process Expired FR880221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE130541X 1941-05-13

Publications (1)

Publication Number Publication Date
FR880221A true FR880221A (en) 1943-03-17

Family

ID=5663685

Family Applications (1)

Application Number Title Priority Date Filing Date
FR880221D Expired FR880221A (en) 1941-05-13 1942-03-14 Cellulose improvement process

Country Status (3)

Country Link
BE (1) BE444985A (en)
CH (5) CH130541A (en)
FR (1) FR880221A (en)

Also Published As

Publication number Publication date
BE444985A (en)
CH225875A (en) 1943-02-28
CH227314A (en) 1943-06-15
CH226690A (en) 1943-04-30
CH130541A (en) 1928-12-15
CH227141A (en) 1943-05-31

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