CA949263A - Method of bleaching wood pulp - Google Patents

Method of bleaching wood pulp

Info

Publication number
CA949263A
CA949263A CA113,960A CA113960A CA949263A CA 949263 A CA949263 A CA 949263A CA 113960 A CA113960 A CA 113960A CA 949263 A CA949263 A CA 949263A
Authority
CA
Canada
Prior art keywords
wood pulp
bleaching wood
bleaching
pulp
wood
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
CA113,960A
Other versions
CA113960S (en
Inventor
Joseph A. Meyers (Iii)
Robert M. Lincoln
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.)
Atlantic Richfield Co
Original Assignee
Atlantic Richfield 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 Atlantic Richfield Co filed Critical Atlantic Richfield Co
Application granted granted Critical
Publication of CA949263A publication Critical patent/CA949263A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/02—Roof covering by making use of flexible material, e.g. supplied in roll form of materials impregnated with sealing substances, e.g. roofing felt
    • 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
    • D21C3/003—Pulping cellulose-containing materials with organic 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
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
    • Y10T156/1085—One web only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24413—Metal or metal compound
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y10T428/24421—Silicon containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
    • Y10T428/249933—Fiber embedded in or on the surface of a natural or synthetic rubber matrix
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/50—FELT FABRIC
    • Y10T442/59—At least three layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
CA113,960A 1970-07-24 1971-05-26 Method of bleaching wood pulp Expired CA949263A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US5879870A 1970-07-24 1970-07-24
US5819870A 1970-07-24 1970-07-24
US14130971A 1971-05-07 1971-05-07

Publications (1)

Publication Number Publication Date
CA949263A true CA949263A (en) 1974-06-18

Family

ID=27369412

Family Applications (2)

Application Number Title Priority Date Filing Date
CA113,960A Expired CA949263A (en) 1970-07-24 1971-05-26 Method of bleaching wood pulp
CA141,414A Expired CA977520A (en) 1970-07-24 1972-05-05 Reinforced fibrous felts for roofing shingle manufacture

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA141,414A Expired CA977520A (en) 1970-07-24 1972-05-05 Reinforced fibrous felts for roofing shingle manufacture

Country Status (7)

Country Link
US (2) US3707437A (en)
BE (1) BE769478A (en)
CA (2) CA949263A (en)
DE (2) DE2128723A1 (en)
FR (2) FR2100243A5 (en)
GB (1) GB1305496A (en)
NL (1) NL7109280A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789730A (en) * 1971-10-07 1973-04-05 Bitumarin Nv PROCESS FOR MANUFACTURING LARGE SHEETS OF COATED MATERIAL AND THEIR APPLICATION TO HYDRAULIC ENGINEERING
US4032491A (en) * 1973-10-19 1977-06-28 Butler-Schoenke Roofing Specialties, Inc. Roofing composition and resulting product
US4250221A (en) * 1976-04-29 1981-02-10 Consolidated Fiberglass Products Co. Fiberglass mat
GB1577561A (en) * 1976-04-29 1980-10-29 Cons Fiberglass Prod Fibreglass mat
US4559103A (en) * 1982-08-05 1985-12-17 Honshu Seishi Kabushiki Kaisha Packaging paper and packaging material for packaging metallic material and method of producing the same
FR2640288B1 (en) * 1988-12-13 1993-06-18 Rhone Poulenc Fibres NON-WOVEN TABLECLOTH SUPPORT IN CHEMICAL TEXTILE AND METHOD OF MANUFACTURING THE SAME
US5274139A (en) * 1993-02-26 1993-12-28 University Of Florida Method for effective reaction between oxygen and organic substance utilizing regenerable hydroperioxide oxidant
US9631367B2 (en) 2011-08-05 2017-04-25 Certainteed Corporation System, method and apparatus for increasing surface solar reflectance of roofing
CA2783921A1 (en) 2011-08-05 2013-02-05 Certainteed Corporation System, method and apparatus for increasing surface solar reflectance of roofing
USD855220S1 (en) * 2016-04-01 2019-07-30 Certainteed Corporation Shingle

Also Published As

Publication number Publication date
CA977520A (en) 1975-11-11
BE769478A (en) 1972-01-03
FR2100243A5 (en) 1972-03-17
DE2222915B2 (en) 1974-09-19
US3707432A (en) 1972-12-26
DE2222915A1 (en) 1973-05-24
US3707437A (en) 1972-12-26
NL7109280A (en) 1972-01-26
DE2128723A1 (en) 1972-01-27
DE2222915C3 (en) 1975-05-07
FR2139310A5 (en) 1973-01-05
GB1305496A (en) 1973-01-31

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