GB1102456A - Improvements in the bleaching of paper - Google Patents

Improvements in the bleaching of paper

Info

Publication number
GB1102456A
GB1102456A GB33090/64A GB3309064A GB1102456A GB 1102456 A GB1102456 A GB 1102456A GB 33090/64 A GB33090/64 A GB 33090/64A GB 3309064 A GB3309064 A GB 3309064A GB 1102456 A GB1102456 A GB 1102456A
Authority
GB
United Kingdom
Prior art keywords
solution
hydrosulphite
paper
weight
peracetic acid
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
GB33090/64A
Inventor
Morris Wayman
William Howard Rapson
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.)
Electric Reduction Company of Canada Ltd
Original Assignee
Electric Reduction Company of Canada Ltd
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 Electric Reduction Company of Canada Ltd filed Critical Electric Reduction Company of Canada Ltd
Priority to GB33090/64A priority Critical patent/GB1102456A/en
Priority to NO159121A priority patent/NO118204B/no
Priority to US476452A priority patent/US3467575A/en
Priority to FI651882A priority patent/FI51722C/en
Priority to BE667858D priority patent/BE667858A/xx
Publication of GB1102456A publication Critical patent/GB1102456A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/02—Chemical or biochemical treatment
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/32—Bleaching agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/1272—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of fibres which can be physically or chemically modified during or after web formation
    • D21H5/1281—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of fibres which can be physically or chemically modified during or after web formation by chemical treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

Paper is bleached by treating it with an aqueous solution of peracetic acid or a salt thereof, e.g. the sodium salt, heating it, e.g. at about 100 DEG C for up to 60 seconds, treating it with an aqueous solution of a hydrosulphite e.g. sodium or zinc hydrosulphite, and drying it. The solutions may be applied by immersing the paper in the solutions, by spraying or by transfer rolls. The peracetic acid or its salt may be present in the solution in a concentration of 0.1 - 2% by weight, the solution optionally being buffered to a pH of 6-9 and being stabilised by the addition of about 1% by weight of a phosphate, e.g. tetrasodium pyrophosphate. After the heating step and prior to treatment with the hydrosulphite solution the peracetic acid on the paper may be neutralized with an SO2 sulphite, bisulphite or metabisulphite solution. The hydrosulphite solution which may have a pH of 4 - 7, may contain 0.1 - 2% by weight of the hydrosulphite and may be stabilised by the addition of 1-3% by weight of a phosphate, e.g. KH2 PO4. After treatment with the hydrosulphite solution the paper may be heated at a temperature of about 100 DEG C for up to 120 seconds. The bleaching may be effected before the final drying step in the paper making process.
GB33090/64A 1964-08-13 1964-08-13 Improvements in the bleaching of paper Expired GB1102456A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB33090/64A GB1102456A (en) 1964-08-13 1964-08-13 Improvements in the bleaching of paper
NO159121A NO118204B (en) 1964-08-13 1965-07-28
US476452A US3467575A (en) 1964-08-13 1965-08-02 Process of bleaching paper with peracetic acid
FI651882A FI51722C (en) 1964-08-13 1965-08-04 Method for bleaching paper.
BE667858D BE667858A (en) 1964-08-13 1965-08-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33090/64A GB1102456A (en) 1964-08-13 1964-08-13 Improvements in the bleaching of paper

Publications (1)

Publication Number Publication Date
GB1102456A true GB1102456A (en) 1968-02-07

Family

ID=10348440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33090/64A Expired GB1102456A (en) 1964-08-13 1964-08-13 Improvements in the bleaching of paper

Country Status (5)

Country Link
US (1) US3467575A (en)
BE (1) BE667858A (en)
FI (1) FI51722C (en)
GB (1) GB1102456A (en)
NO (1) NO118204B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635806A (en) * 1969-10-27 1972-01-18 Procter & Gamble Photochemical bleaching of polymaleate homopolymers and copolymers in the presence of a peracid
US3709778A (en) * 1971-01-12 1973-01-09 Atlantic Richfield Co Method for bleaching groundwood pulp with tertiary butyl hydroperoxide
FI90680C (en) * 1992-04-24 1994-03-10 Kymin Paperiteollisuus Oy Bleaching of paper web with peroxide
US7914646B2 (en) * 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA461242A (en) * 1949-11-22 L. Mcewen Robert Bleached paper and method of bleaching the same
US1154851A (en) * 1915-04-19 1915-09-28 Edward P Foley Process of bleaching ground wood-pulp.
US1645061A (en) * 1924-08-21 1927-10-11 American Lakes Paper Company Method of bleaching paper pulp
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
US2347434A (en) * 1941-06-30 1944-04-25 Du Pont Stabilization of peracid solutions
US2492047A (en) * 1946-03-30 1949-12-20 Du Pont Bleaching wood pulp
US2598580A (en) * 1947-10-08 1952-05-27 Buffalo Electro Chem Co Bleaching or brightening a web of mixed fibers
US2862784A (en) * 1955-03-04 1958-12-02 Virginia Smelting Company Oxidative-reductive multi-stage bleaching of ground wood pulp
US2963395A (en) * 1958-03-31 1960-12-06 Crown Zellerbach Corp Process of bleaching lignocellulosic pulps
US2970882A (en) * 1958-12-03 1961-02-07 Kendall & Co Process for continuous purification of bulk fiber
US3085039A (en) * 1960-08-23 1963-04-09 Fmc Corp Process for the treatment of wood

Also Published As

Publication number Publication date
US3467575A (en) 1969-09-16
BE667858A (en) 1965-12-01
FI51722C (en) 1977-03-10
FI51722B (en) 1976-11-30
NO118204B (en) 1969-11-24

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