GB645761A - Improvements relating to the saponification of cellulose acetate textile materials - Google Patents
Improvements relating to the saponification of cellulose acetate textile materialsInfo
- Publication number
- GB645761A GB645761A GB5495/48A GB549548A GB645761A GB 645761 A GB645761 A GB 645761A GB 5495/48 A GB5495/48 A GB 5495/48A GB 549548 A GB549548 A GB 549548A GB 645761 A GB645761 A GB 645761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- cellulose acetate
- materials
- saponification
- yarns
- 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
- 239000000463 material Substances 0.000 title abstract 7
- 229920002301 cellulose acetate Polymers 0.000 title abstract 6
- 238000007127 saponification reaction Methods 0.000 title abstract 4
- 239000004753 textile Substances 0.000 title abstract 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 9
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 abstract 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 4
- 229920000742 Cotton Polymers 0.000 abstract 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000000975 dye Substances 0.000 abstract 2
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 2
- 229920003043 Cellulose fiber Polymers 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000012932 acetate dye Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 238000004043 dyeing Methods 0.000 abstract 1
- 230000032050 esterification Effects 0.000 abstract 1
- 238000005886 esterification reaction Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 150000002895 organic esters Chemical class 0.000 abstract 1
- 239000004627 regenerated cellulose Substances 0.000 abstract 1
- 210000002268 wool Anatomy 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/22—Effecting variation of dye affinity on textile material by chemical means that react with the fibre
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
- D06M11/385—Saponification of cellulose-acetate
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Coloring (AREA)
Abstract
Textile materials comprising fibres of cellulose acetate of acetyl value (calculated as acetic acid) above 56 per cent are partially saponified so as to reduce the acetyl value to 53-55 per cent. The treatment improves the dyeing properties of the materials. Although of relatively high acetyl value, materials may be obtained which have affinity both for cotton dyes and for cellulose acetate dyes of the dispersed insoluble kind and which can be dyed with cotton dyes without substantial variation in depth of colour. The materials may be treated in the form of stretched or unstretched yarns in hank, skein, bobbin, cone, or other package. They may be treated in the form of staple fibres or in fabric form. Travelling yarns may be passed slowly and continuously through a heated saponifying bath. Saponification is preferably effected by treatment of the materials with a 1-5 per cent solution of sodium carbonate at 80 DEG -100 DEG C. The heat resistance, including resistance to glazing by a hot iron, is also improved by the treatment. The cellulose acetate fibres or yarns may be associated with wool, silk, cotton, or regenerated cellulose fibres. In an example cellulose acetate of acetyl value 59 per cent is spun into filaments from a solution in methylene chloride and alcohol. The yarns obtained are immersed for 1 hour in 2.5 per cent sodium carbonate solution at 97 DEG C. until the acetyl value is about 55 per cent. The Specification as open to inspection under Sect. 91 comprises also the saponification of materials of cellulose acetate of combined acetic acid content of 54-59 per cent or of another cellulose organic ester of equivalent degree of esterification, and the saponification may be continued till the combined acetic acid content has been reduced to 85-93 per cent of its original value. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US645761XA | 1947-02-24 | 1947-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645761A true GB645761A (en) | 1950-11-08 |
Family
ID=22056902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5495/48A Expired GB645761A (en) | 1947-02-24 | 1948-02-24 | Improvements relating to the saponification of cellulose acetate textile materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645761A (en) |
-
1948
- 1948-02-24 GB GB5495/48A patent/GB645761A/en not_active Expired
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