GB648632A - Improvements in or relating to the treatment of cellulosic material - Google Patents
Improvements in or relating to the treatment of cellulosic materialInfo
- Publication number
- GB648632A GB648632A GB14203/48A GB1420348A GB648632A GB 648632 A GB648632 A GB 648632A GB 14203/48 A GB14203/48 A GB 14203/48A GB 1420348 A GB1420348 A GB 1420348A GB 648632 A GB648632 A GB 648632A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorite
- sodium
- acid
- alkali
- chemicking
- 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
- D06L4/20—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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Cellulosic materials (such as bast fibres) are purified and bleached by chemicking with neutral or acid hypochlorite, immersing in an anti-chlor solution and treating with an alkali or alkaline earth chlorite at an elevated temperature at a pH about 5 to 5.5. The chemicking, which is preferably preceded by a hot alkali scour, is usually carried out with sodium or calcium hypochlorite to which an acid such as sulphuric or acetic may be added. The anti-chlor solution may be an alkali sulphite, bisulphite or thiosulphate, preferably made slightly alkaline, e.g. with a bicarbonate, Sodium chlorite is preferred for the final step, using 2 g. or more per litre, and is buffered to the required pH value, e.g. with sodium dihydrogen phosphate or acid sodium acetate. Washing is desirable after each step in the process, and the chlorite step may be followed by a peroxide treatment. An example shows the treatment of linen yarn, and the process is also applicable to bast fibres of hemp and jute, and to cotton.ALSO:Cellulosic materials (such as bast fibres) are bleached by chemicking with neutral or acid hypochlorite, immersing in an anti-chlor solution and treating with an alkali or alkaline earth chlorite at an elevated temperature at a pH about 5 to 5.5. The chemicking, which is preferably preceded by a hot alkali scour, is usually carried out with sodium or calcium hypochlorite to which an acid such sulphuric or acetic may be added. The anti-chlor solution may be an alkali sulphite, bisulphite or thiosulphate, preferably made slightly alkaline, e.g. with a bicarbonate. Sodium chlorite is preferred for the final step, using 2 g. or more per litre, and is buffered to the required pH value, e.g. with sodium dihydrogen phosphate or acid sodium acetate. Washing is desirable after each step in the process, and the chlorite step may be followed by a peroxide treatment. An example shows the treatment of linen yarn, and the process is also applicable to bast fibres of hemp and jute, and to cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14203/48A GB648632A (en) | 1948-05-26 | 1948-05-26 | Improvements in or relating to the treatment of cellulosic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14203/48A GB648632A (en) | 1948-05-26 | 1948-05-26 | Improvements in or relating to the treatment of cellulosic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB648632A true GB648632A (en) | 1951-01-10 |
Family
ID=10036928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14203/48A Expired GB648632A (en) | 1948-05-26 | 1948-05-26 | Improvements in or relating to the treatment of cellulosic material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB648632A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2903326A (en) * | 1956-10-17 | 1959-09-08 | Pennsalt Chemicals Corp | Improved process for bleaching cellulose pulp using chlorate |
-
1948
- 1948-05-26 GB GB14203/48A patent/GB648632A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2903326A (en) * | 1956-10-17 | 1959-09-08 | Pennsalt Chemicals Corp | Improved process for bleaching cellulose pulp using chlorate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB576510A (en) | Improvements in or relating to the production of cellulose | |
| GB648632A (en) | Improvements in or relating to the treatment of cellulosic material | |
| US2018276A (en) | Art of treating vegetable fibers | |
| GB901687A (en) | Improvements in and relating to the bleaching of fibre material | |
| GB723566A (en) | Improved method of bleaching textile materials | |
| GB596192A (en) | Improvements in or relating to the bleaching of cellulose fibres | |
| GB682694A (en) | Improvements in or relating to bleaching processes | |
| GB497346A (en) | Improvements in or relating to the treatment of textiles | |
| GB569730A (en) | Improvements in the anti-shrinking treatment of animal fibres | |
| US1927022A (en) | Art of treating natural and artificial silk and agents therefor | |
| GB615519A (en) | Improvements in or relating to methods of conditioning vegetable bast fibres for spinning | |
| GB339550A (en) | Process for bleaching bast fibres especially flax, hemp and the like | |
| GB389803A (en) | Improved process for refining vegetable fibrous material | |
| GB614966A (en) | Improvements in and relating to the treatment of wool | |
| GB662890A (en) | Improvements in or relating to the treatment of cellulosic material | |
| GB586020A (en) | Improvements relating to the anti-shrink treatment of materials consisting wholly orpartly of wool or like animal fibres | |
| GB553923A (en) | Improvements in the treatment of textile materials consisting of or containing animal fibres to reduce their tendency to felt and shrink | |
| GB958360A (en) | A method of treating natural plant fibres such as flax fibres to render them suitable for textile purposes | |
| GB637150A (en) | An improved process of bleaching textile fibres | |
| GB1248826A (en) | Bleaching method | |
| GB739810A (en) | Improvements in process for bleaching textile and other fibres of vegetable origin | |
| GB829835A (en) | Method for the continuous bleaching or dyeing of cellulosic fibres | |
| GB489496A (en) | Improvements in or relating to the treatment of textiles | |
| ES393360A1 (en) | Method for producing bast fibres | |
| GB579584A (en) | Improvements in the treatment of textile materials consisting of or containing animal fibres to reduce their tendency to felt and shrink |