GB561834A - Improvements in processes of bleaching cellulosic textile materials - Google Patents

Improvements in processes of bleaching cellulosic textile materials

Info

Publication number
GB561834A
GB561834A GB10386/42A GB1038642A GB561834A GB 561834 A GB561834 A GB 561834A GB 10386/42 A GB10386/42 A GB 10386/42A GB 1038642 A GB1038642 A GB 1038642A GB 561834 A GB561834 A GB 561834A
Authority
GB
United Kingdom
Prior art keywords
chlorite
solution
bleaching
hypochlorite
sodium
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
GB10386/42A
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.)
Mathieson Alkali Works Inc
Original Assignee
Mathieson Alkali Works Inc
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 Mathieson Alkali Works Inc filed Critical Mathieson Alkali Works Inc
Publication of GB561834A publication Critical patent/GB561834A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D06L4/23—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 hypohalogenites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Paper (AREA)

Abstract

Cellulosic textile materials are bleached by treatment with an alkaline solution of an alkali metal chlorite, e.g. sodium chlorite and a hypochlorite, e.g. sodium or calcium hypochlorite. The solution advantageoysly contains 1 to 3 grams of available chlorine per litre, the ratio of hypochlorite to chlorite being preferably about 1.5 to 1, based on the available chlorine and the preferred pH value of the solution being between 8.7 and 10.0. The process described and claimed in Specification 519,522, wherein chlorine is introduced into a chlorite bleaching liquor, is disclaimed. The required pH value may be obtained by addition of sodium carbonate and/or bicarbonate. The material to be bleached is advantageously subjected to a preliminary kier-boiling followed by washing, souring with sulphuric acid or aqueous sulphur dioxide and again washing, and, after treatment with the bleaching solution, the material is squeezed, washed, soured, e.g. with aqueous sulphur dioxide, washed and finished. Various examples of the bleaching process, employing temperatures up to 80 DEG F. are given.
GB10386/42A 1941-08-08 1942-07-24 Improvements in processes of bleaching cellulosic textile materials Expired GB561834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US561834XA 1941-08-08 1941-08-08

Publications (1)

Publication Number Publication Date
GB561834A true GB561834A (en) 1944-06-07

Family

ID=22002720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10386/42A Expired GB561834A (en) 1941-08-08 1942-07-24 Improvements in processes of bleaching cellulosic textile materials

Country Status (3)

Country Link
DE (1) DE912564C (en)
FR (1) FR916389A (en)
GB (1) GB561834A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521340A (en) * 1945-05-16 1950-09-05 Olin Mathieson Bleaching of cellulosic textiles
US2662884A (en) * 1951-05-17 1953-12-15 Hercules Powder Co Ltd Method of bleaching cellulose derivatives
US2746958A (en) * 1951-05-17 1956-05-22 Hercules Powder Co Ltd Cellulose derivatives and their method of preparation
US2912431A (en) * 1956-10-01 1959-11-10 Hercules Powder Co Ltd Preparation of carboxyalkyl cellulose derivatives

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1111592B (en) * 1957-07-05 1961-07-27 Bayer Ag Method of bleaching with chlorites

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87402A (en) * 1918-10-24 1920-12-01 Original Odhner Ab Device on calculating machines for moving the sliding carriage step by step.
SE87402C1 (en) * 1931-03-18 1936-09-15

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521340A (en) * 1945-05-16 1950-09-05 Olin Mathieson Bleaching of cellulosic textiles
US2662884A (en) * 1951-05-17 1953-12-15 Hercules Powder Co Ltd Method of bleaching cellulose derivatives
US2746958A (en) * 1951-05-17 1956-05-22 Hercules Powder Co Ltd Cellulose derivatives and their method of preparation
US2912431A (en) * 1956-10-01 1959-11-10 Hercules Powder Co Ltd Preparation of carboxyalkyl cellulose derivatives

Also Published As

Publication number Publication date
FR916389A (en) 1946-12-04
DE912564C (en) 1954-05-31

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