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GB822603A - Improvements in chlorite bleaching processes - Google Patents

Improvements in chlorite bleaching processes

Info

Publication number
GB822603A
GB822603A GB26085/55A GB2608555A GB822603A GB 822603 A GB822603 A GB 822603A GB 26085/55 A GB26085/55 A GB 26085/55A GB 2608555 A GB2608555 A GB 2608555A GB 822603 A GB822603 A GB 822603A
Authority
GB
United Kingdom
Prior art keywords
solution
allowed
treated
remain
goods
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
GB26085/55A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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
Priority claimed from DEF15697A external-priority patent/DE1013253B/en
Application filed by Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB822603A publication Critical patent/GB822603A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

Fibrous materials or fabrics of native or regenerated cellulose, cellulose esters, or organic condensation or polymerization products are impregnated with a chlorite solution having a pH of 3.5 to 5.0, removed from the solution and allowed to remain in the atmosphere at a temperature between 40 DEG C. and 73 DEG C. until the desired bleaching effect is achieved. In a modification of the process, the goods are impregnated with a neutral or weakly alkaline chlorite solution and, after removal from the solution, are treated with a volatile acid and steam to bring the pH to 3.5 to 5, whereafter the goods are allowed to remain in the atmosphere at a temperature between 40 DEG and 73 DEG C. In examples: (1) cotton goods, after treating with an aqueous solution containing sodium chlorite, an alkylaryl sulphonate and methyl taurine at a pH of 4.8 and temperature of 60 DEG C., are allowed to remain at 60 DEG C. for 5 hours; (2) cotton fabric, after treating at 30 DEG C. with a solution containing sodium chlorite and an alkylaryl sulphonate, remains at 60 DEG C. for 4 hours and is then treated with oleyl methyl taurine; (3) mercerized cotton, after being impregnated at 25 DEG C. with a solution containing sodium chlorite and a condensation product of a high M.W. fatty acid with an amino-carboxylic acid, lysalbine or a protalkinic acid at a pH of 8, is squeezed to a moisture content of 100%, heated to 70 DEG C. with steam containing acetic acid and allowed to remain at 63 DEG C. for 3 hours; (4) linen tow is treated at 30 DEG C. with sodium chlorite at a pH of 4.8 and allowed to remain overnight at 40 DEG C.; it is then treated with water at 60 DEG C. and with a solution at 75 DEG to 80 DEG C. containing hydrogen peroxide, sodium hydroxide, calcined sodium carbonate and water-glass. Example 5 relates to the treatment of viscose rayon and Example 6 to polyamide fibres. In Example 7, cotton goods are treated at 90 DEG C. with a solution containing a mixture of an alkylarylsulphonate and an alkylphenylpolyglycol ether. Cotton goods may be scoured before the process.
GB26085/55A 1954-09-09 1955-09-12 Improvements in chlorite bleaching processes Expired GB822603A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2900219X 1954-09-09
DEF15697A DE1013253B (en) 1954-09-11 1954-09-11 Method of bleaching with chlorites

Publications (1)

Publication Number Publication Date
GB822603A true GB822603A (en) 1959-10-28

Family

ID=32327382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26085/55A Expired GB822603A (en) 1954-09-09 1955-09-12 Improvements in chlorite bleaching processes

Country Status (4)

Country Link
US (1) US2900219A (en)
BE (1) BE541207A (en)
FR (1) FR1138346A (en)
GB (1) GB822603A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790343A (en) * 1971-12-10 1974-02-05 S Ikeda Method for bleaching fibrous materials and compositions therefor
US3962112A (en) * 1974-08-26 1976-06-08 Charles William Shaheen Composition and process for removing sulfur dioxide from combustion gases
US4880556A (en) * 1987-05-26 1989-11-14 The Drackett Company Aqueous alkali metal halogenite compositions containing a colorant
US4963287A (en) * 1987-05-26 1990-10-16 The Drackett Company Aqueous alkali metal halogenite compositions
US5370707A (en) * 1990-03-28 1994-12-06 Sando Iron Works Co., Ltd. Method for bleaching cloth

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2145062A (en) * 1930-04-17 1939-01-24 Mathieson Alkali Works Inc Bleaching of cellulosic materials
US2100496A (en) * 1936-02-18 1937-11-30 Mathieson Alkali Works Inc Bleaching of cellulosic materials
GB552711A (en) * 1940-09-18 1943-04-21 Mathieson Alkali Works Improvements in bleaching and finishing textiles
GB552567A (en) * 1940-09-27 1943-04-14 Mathieson Alkali Works Improvements in textile finishing
US2521340A (en) * 1945-05-16 1950-09-05 Olin Mathieson Bleaching of cellulosic textiles
DE941665C (en) * 1951-04-19 1956-04-19 Val Mehler Segeltuchweberei Ag Process for bleaching textiles
DE1008701B (en) * 1952-06-07 1957-05-23 Degussa Process for bleaching cellulosic material with sodium chlorite

Also Published As

Publication number Publication date
FR1138346A (en) 1957-06-12
US2900219A (en) 1959-08-18
BE541207A (en)

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