CH297856A - Process for the preparation of superbleached paper pulps, from chemical wood pulps. - Google Patents

Process for the preparation of superbleached paper pulps, from chemical wood pulps.

Info

Publication number
CH297856A
CH297856A CH297856DA CH297856A CH 297856 A CH297856 A CH 297856A CH 297856D A CH297856D A CH 297856DA CH 297856 A CH297856 A CH 297856A
Authority
CH
Switzerland
Prior art keywords
pulps
superbleached
preparation
chemical wood
paper
Prior art date
Application number
Other languages
French (fr)
Inventor
Inc Buffalo Electro-Ch Company
Original Assignee
Buffalo Electro Chem Co
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 Buffalo Electro Chem Co filed Critical Buffalo Electro Chem Co
Publication of CH297856A publication Critical patent/CH297856A/en

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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CH297856D 1950-06-30 1951-06-11 Process for the preparation of superbleached paper pulps, from chemical wood pulps. CH297856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US171548A US2661261A (en) 1950-06-30 1950-06-30 Method of superbleaching chemical pulp

Publications (1)

Publication Number Publication Date
CH297856A true CH297856A (en) 1954-04-15

Family

ID=22624155

Family Applications (1)

Application Number Title Priority Date Filing Date
CH297856D CH297856A (en) 1950-06-30 1951-06-11 Process for the preparation of superbleached paper pulps, from chemical wood pulps.

Country Status (5)

Country Link
US (1) US2661261A (en)
CH (1) CH297856A (en)
DE (1) DE973632C (en)
FR (1) FR1043060A (en)
GB (1) GB684742A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779656A (en) * 1953-06-16 1957-01-29 Du Pont Bleaching of kraft pulp
NL202075A (en) * 1954-11-19 Fmc Corp
US2822236A (en) * 1954-11-19 1958-02-04 Fmc Corp Process of maintaining brightness in high density wood pulp having a ph6-10 by adding hydrogen peroxide and composition produced thereby
US3020196A (en) * 1960-08-05 1962-02-06 Allied Chem Production of high brightness high strength wood pulps
US3020197A (en) * 1960-08-05 1962-02-06 Allied Chem Method for production of high brightness high strength wood pulps
FR2553444B1 (en) * 1983-10-13 1986-07-18 Centre Tech Ind Papier HYPOCHLORITE TREATMENT OF CHEMICAL PAPER PULP
DE102007036376A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Bleached pulp

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA461240A (en) * 1949-11-22 L. Mcewen Robert Paper furnish constituent and method of making the furnish
US1768820A (en) * 1922-03-16 1930-07-01 Bradley Mckeefe Corp Method of bleaching pulp
DE507759C (en) * 1924-09-23 1930-09-22 Degussa Process for bleaching unobstructed plant fibers (especially cotton) with alkaline hydrogen peroxide solutions
DE541303C (en) * 1926-04-28 1932-01-06 Max Steinschneider Dipl Ing Process for the production of a low-viscosity viscose solution for the manufacture of rayon
GB265055A (en) * 1926-06-01 1927-02-03 Robinson Fiber Corp Improvements in or relating to the treatment of paper pulp stock
DE573341C (en) * 1927-02-27 1933-03-31 Max Steinschneider Dipl Ing Process for the production of cellulose, in particular for the manufacture of rayon
DE573739C (en) * 1928-11-28 1933-04-05 Degussa Process for the production of highly viscous cellulose solutions
AT142240B (en) * 1931-09-17 1935-06-25 Carl Busch Thorne Method and apparatus for bleaching and cleaning pulp and the like. like
US2107297A (en) * 1934-03-08 1938-02-08 Buffalo Electro Chem Co Bleaching fiber
US2125634A (en) * 1937-03-29 1938-08-02 Oxford Paper Co Method of bleaching pulp or paper webs
US2150926A (en) * 1937-07-03 1939-03-21 Buffalo Electro Chem Co Process of making and bleaching paper
DE736070C (en) * 1938-07-01 1943-06-07 Degussa Process for treating pulp
US2377171A (en) * 1940-09-28 1945-05-29 Champion Paper & Fibre Co Process of bleaching pulp
US2465738A (en) * 1945-12-22 1949-03-29 Buffalo Electro Chem Co Method of bleaching mechanical wood fibers
FR947783A (en) * 1946-01-24 1949-07-12 Du Pont Improvements made to the bleaching of wood pulps
US2492047A (en) * 1946-03-30 1949-12-20 Du Pont Bleaching wood pulp
US2494542A (en) * 1946-05-02 1950-01-17 Niagara Alkali Company Method of bleaching pulp
US2513344A (en) * 1946-09-19 1950-07-04 Buffalo Electro Chem Co Method of bleaching high-density pulp
US2510595A (en) * 1946-09-20 1950-06-06 Buffalo Electro Chem Co Method of bleaching groundwood
US2514503A (en) * 1947-07-30 1950-07-11 Buffalo Electro Chem Co Method of bleaching moist felted groundwood pulp
US2466633A (en) * 1948-05-26 1949-04-05 James M Daily Method of bleaching cellulosic pulp

Also Published As

Publication number Publication date
FR1043060A (en) 1953-11-05
GB684742A (en) 1952-12-24
DE973632C (en) 1960-04-21
US2661261A (en) 1953-12-01

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