GB472933A - Improvements in and relating to the manufacture of artificial structures - Google Patents
Improvements in and relating to the manufacture of artificial structuresInfo
- Publication number
- GB472933A GB472933A GB18097/36A GB1809736A GB472933A GB 472933 A GB472933 A GB 472933A GB 18097/36 A GB18097/36 A GB 18097/36A GB 1809736 A GB1809736 A GB 1809736A GB 472933 A GB472933 A GB 472933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- cellulose ether
- xanthate
- alkali
- bath
- 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
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
- D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Artificial threads, films, dressings, finishings printings, cements, adhesives, plates and artificial structures in general are prepared from caustic alkali solutions of cellulose ether xanthates, preferably xanthates of alkali-soluble cellulose ethers, by using for the coagulation of the shaped structure a secondary alkali carbonate, the cellulose ether xanthate employed being made with a proportion of carbon bisulphide smaller than 20, 15 or even 10 per cent of the weight of the cellulose ether. Instead of a cellulose ether xanthate there may be employed a product obtained by bringing together an alkali-soluble cellulose ether and a cellulose xanthate, in this case the limiting proportion of carbon bisulphide being calculated on the sum of the weights of the cellulose ether and the cellulose of the xanthate; or, alternatively, there may be used a product prepared by bringing together a cellulose ether xanthate and an alkali-soluble cellulose ether, in this case the proportion of carbon bisulphide p being calculated with respect to the total proportion of cellulose ether, that is, xanthated and otherwise. The cellulose ether xanthate may also contain cellulose xanthate, and in its preparation, particularly its dissolution, a temperature below 5 DEG C., even below -10 DEG C., may be at least temporarily employed. An aqueous solution of sodium carbonate is preferably used as the coagulation bath; and the bath may also contain a salt of alkaline reaction such as dibasic or tribasic alkali phosphate, an alkali borate, silicate, thiosulphate, acetate, &c., or a neutral salt such as alkali sulphate or chloride, and an organic substance such as glycerine, a sugar, or turkey red oil. The secondary alkali carbonate may be used as a primary coagulation bath; or the structure may be preliminarily coagulated in a bath, say of ammonium sulphate or chloride, acid sodium silicate, sodium bisulphite, methanol or ethanol, and afterwards the coagulation completed in the bath of secondary alkali carbonate. The coagulated product may be washed with water, or it may be treated, with or without washing, with a bath containing an acid, or a neutral, acid or alkaline salt, or with another bath capable of coagulating viscose etc.; or alternatively, the product may be first treated with a cold, warm or hot solution of a primary or secondary alkali carbonate. The cellulose ether xanthate may be derived from an alkyl cellulose, hydroxyalkyl cellulose, alkylhydroxyalkyl cellulose in an hydroxy-acid ether of cellulose; it may be prepared by xanthating the cellulose ethers of Specifications 459,122, 459,123, 462,283, 462,456, 462,712, and 462,713; and the cellulose ether used may contain not more than one ether group to 2, 4 or even 6 C6H10O5 units. The secondary alkali carbonate may be reconstituted in the coagulation bath as the coagulation proceeds, by introducing carbon dioxide. Specifications 25246/11, [Class 2 (iii)], 231,808, 231,811, 281,352, 312,197, 319,293, 323,731, 323,732, 335,906, 335,994, [all in Class 2 (ii)], 341,843, 341,899, 357,121, 357,154, 357,167, 357,526, 357,527, 357,595, 362,437, 367,920, 368,288, 374, 64, 385,979, 390,518, 390,519, 408,932, 408,950, 459,124, 469,007, and 470,747 also are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21347/35A GB472888A (en) | 1935-12-27 | 1935-12-27 | Improvements in and relating to the manufacture of artificial structures |
Publications (1)
Publication Number | Publication Date |
---|---|
GB472933A true GB472933A (en) | 1937-09-27 |
Family
ID=10161352
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21347/35A Expired GB472888A (en) | 1935-12-27 | 1935-12-27 | Improvements in and relating to the manufacture of artificial structures |
GB18097/36A Expired GB472933A (en) | 1935-12-27 | 1935-12-27 | Improvements in and relating to the manufacture of artificial structures |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21347/35A Expired GB472888A (en) | 1935-12-27 | 1935-12-27 | Improvements in and relating to the manufacture of artificial structures |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB472888A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105517955A (en) | 2013-07-01 | 2016-04-20 | Ihk纤维公司 | Alkali recycling in cellulose spinning process |
-
1935
- 1935-12-27 GB GB21347/35A patent/GB472888A/en not_active Expired
- 1935-12-27 GB GB18097/36A patent/GB472933A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB472888A (en) | 1937-09-27 |
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