GB640394A - Activating the oxidising power of chlorite solutions and bleaching cellulosic material therewith - Google Patents

Activating the oxidising power of chlorite solutions and bleaching cellulosic material therewith

Info

Publication number
GB640394A
GB640394A GB28912/47A GB2891247A GB640394A GB 640394 A GB640394 A GB 640394A GB 28912/47 A GB28912/47 A GB 28912/47A GB 2891247 A GB2891247 A GB 2891247A GB 640394 A GB640394 A GB 640394A
Authority
GB
United Kingdom
Prior art keywords
metal
vessel
chlorite
activator
bleaching
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
GB28912/47A
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Publication of GB640394A publication Critical patent/GB640394A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide
    • D06L4/26—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide combined with specific additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Paper (AREA)

Abstract

Cellulosic textile materials are bleached in a solution of a chlorite which has been activated by means of a multivalent metal or alloy or insoluble compound thereof which is in contact with the chlorite, the extent or time of contact of the activator with the chlorite solution being capable of regulation. Suitable metals are chromium, iron, cobalt, nickel, copper and manganese. In order to prevent uncontrollable activation of the chlorite by the metal of which the container is made, the metal is polarized by known electrical methods, e.g. a protecting metal which is more electropositive than the metal of the container may be introduced into the chlorite solution, and an electrical connection made between the two metals. In a modification, the protecting metal is in a separate vessel which is in hydraulic connection with the bleaching vessel. Other modifications are described in which the activating metal or compound is in a separate vessel and the chlorite solution is circulated through the bleaching vessel and the vessel containing the activator; in which the protecting metal is enclosed within a porous cell in the bleaching vessel; and in which the activator is in the form of a mass, e.g. of cobalt oxide, at the bottom of the vessel.ALSO:The oxidizing power of chlorite solutions is activated by means of a multivalent metal or alloy or insoluble compound thereof which is in contact with the chlorite, the extent or time of contact of the activator with the chlorite solution being capable of regulation. Suitable metals are chromium, iron, cobalt, nickel, copper and manganese. In order to prevent uncontrollable activation of the chlorite by the metal of which the container is made, the metal is polarized by known electrical methods, e.g. a protecting metal which is more electro-positive than the metal of the container may be introduced into the chlorite solution, and an electrical connection made between the two metals. In a modification, the protecting metal is in a separate vessel which is in hydraulic connection with the bleaching vessel. Other modifications are described in which the activating metal or compound is in a separate vessel and the chlorite solution is circulated through the bleaching vessel and the vessel containing the activator; in which the protecting metal is enclosed within a porous cell in the bleaching vessel; and in which the activator is in the form of a mass, e.g. cobalt oxide, at the bottom of the vessel.
GB28912/47A 1946-11-18 1947-10-29 Activating the oxidising power of chlorite solutions and bleaching cellulosic material therewith Expired GB640394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE868339X 1946-11-18

Publications (1)

Publication Number Publication Date
GB640394A true GB640394A (en) 1950-07-19

Family

ID=30773895

Family Applications (2)

Application Number Title Priority Date Filing Date
GB28912/47A Expired GB640394A (en) 1946-11-18 1947-10-29 Activating the oxidising power of chlorite solutions and bleaching cellulosic material therewith
GB16483/59A Expired GB868339A (en) 1946-11-18 1959-05-13 Improvements in oxidation processes with chlorites

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB16483/59A Expired GB868339A (en) 1946-11-18 1959-05-13 Improvements in oxidation processes with chlorites

Country Status (5)

Country Link
BE (2) BE469257A (en)
CH (1) CH274230A (en)
FR (1) FR953496A (en)
GB (2) GB640394A (en)
LU (2) LU28586A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739032A (en) * 1953-03-30 1956-03-20 William K Wilson Iron-catalyzed decomposition of sodium chlorite
US3035883A (en) * 1959-11-13 1962-05-22 Olin Mathieson Chlorite-permanganate cellulosic bleaching process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739032A (en) * 1953-03-30 1956-03-20 William K Wilson Iron-catalyzed decomposition of sodium chlorite
US3035883A (en) * 1959-11-13 1962-05-22 Olin Mathieson Chlorite-permanganate cellulosic bleaching process

Also Published As

Publication number Publication date
GB868339A (en) 1961-05-17
FR953496A (en) 1949-12-07
LU28586A1 (en)
BE469257A (en) 1900-01-01
LU37203A1 (en)
CH274230A (en) 1951-03-31
BE567747A (en) 1900-01-01

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