CH226031A - Process for the production of a pulp suitable for the preparation of viscose spinning solutions from raw materials rich in pentosan. - Google Patents

Process for the production of a pulp suitable for the preparation of viscose spinning solutions from raw materials rich in pentosan.

Info

Publication number
CH226031A
CH226031A CH226031DA CH226031A CH 226031 A CH226031 A CH 226031A CH 226031D A CH226031D A CH 226031DA CH 226031 A CH226031 A CH 226031A
Authority
CH
Switzerland
Prior art keywords
pentosan
preparation
production
raw materials
spinning solutions
Prior art date
Application number
Other languages
German (de)
Inventor
Phrix-Arbeitsgemeinschaft
Original Assignee
Phrix Arbeitsgemeinschaft
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 Phrix Arbeitsgemeinschaft filed Critical Phrix Arbeitsgemeinschaft
Publication of CH226031A publication Critical patent/CH226031A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
    • 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
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • 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
    • D21C3/26—Multistage processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
CH226031D 1939-12-13 1941-08-19 Process for the production of a pulp suitable for the preparation of viscose spinning solutions from raw materials rich in pentosan. CH226031A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE218203X 1939-12-13
DE211040X 1940-10-21

Publications (1)

Publication Number Publication Date
CH226031A true CH226031A (en) 1943-03-15

Family

ID=25760752

Family Applications (2)

Application Number Title Priority Date Filing Date
CH218203D CH218203A (en) 1939-12-13 1940-12-05 Blow chamber.
CH226031D CH226031A (en) 1939-12-13 1941-08-19 Process for the production of a pulp suitable for the preparation of viscose spinning solutions from raw materials rich in pentosan.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH218203D CH218203A (en) 1939-12-13 1940-12-05 Blow chamber.

Country Status (4)

Country Link
BE (1) BE442623A (en)
CH (2) CH218203A (en)
FR (1) FR890647A (en)
GB (1) GB575854A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761935A (en) * 1952-07-30 1956-09-04 David C Prince Circuit breaker
DE1069737B (en) * 1952-12-23 1959-11-26
FR1183278A (en) * 1957-11-05 1959-07-06 Merlin Gerin Improvements to magnetic blow switches
ZA766073B (en) * 1975-10-24 1977-09-28 D Econimidis Production of pulp
FI63267B (en) * 1980-12-08 1983-01-31 Ahlstroem Oy FOERFARANDE FOER FRAMSTAELLNING AV SPECIALCELLULOSA MED HOEGT ALFATAL GENOM FLERSTEGSKOKNING INNEFATTANDE SYRAFOERHYDROLYS
US4436586A (en) * 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction

Also Published As

Publication number Publication date
CH218203A (en) 1941-11-30
BE442623A (en)
GB575854A (en) 1946-03-07
FR890647A (en) 1944-02-14

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