GB923896A - Improvements in or relating to the bleaching of cellulosic fibres - Google Patents
Improvements in or relating to the bleaching of cellulosic fibresInfo
- Publication number
- GB923896A GB923896A GB27713/59A GB2771359A GB923896A GB 923896 A GB923896 A GB 923896A GB 27713/59 A GB27713/59 A GB 27713/59A GB 2771359 A GB2771359 A GB 2771359A GB 923896 A GB923896 A GB 923896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- fibres
- bleaching
- aqueous solution
- hydrogen peroxide
- 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
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
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Copper-contaminated cellulosic fibres, i.e. natural cellulose fibres, e.g. scoured or unscoured cotton, linen and jute, regenerated cellulose and cellulose derivatives alone or in admixture with other natural fibres, e.g. wool, and/or synthetic fibres, e.g. nylon, are treated prior to bleaching with a peroxy compound, e.g. hydrogen peroxide, sodium peroxide and peracetic acid, with an aqueous solution containing oxalate ions and an acid other than oxalic acid, e.g. hydrochloric acid, sulphuric acid and Caro's acid, at a pH below 3,6. The oxalate ions, which are preferably present in a concentration of 0,1-2 gms./litre, may be derived from oxalic acid or a salt thereof, e.g. sodium oxalate. The acid content of the aqueous solution is preferably not greater than 2% by weight and the treatment is preferably carried out a temperature of 10 DEG -70 DEG C. Hydrogen peroxide bleaching solutions may contain sodium silicate, soda ash, caustic soda, magnesium sulphate and wetting agents.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB27713/59A GB923896A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to the bleaching of cellulosic fibres |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB27713/59A GB923896A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to the bleaching of cellulosic fibres |
Publications (1)
Publication Number | Publication Date |
---|---|
GB923896A true GB923896A (en) | 1963-04-18 |
Family
ID=10264087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27713/59A Expired GB923896A (en) | 1959-08-13 | 1959-08-13 | Improvements in or relating to the bleaching of cellulosic fibres |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB923896A (en) |
-
1959
- 1959-08-13 GB GB27713/59A patent/GB923896A/en not_active Expired
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