GB688313A - Process for working up molten cellulose derivatives into threads and other shaped articles - Google Patents
Process for working up molten cellulose derivatives into threads and other shaped articlesInfo
- Publication number
- GB688313A GB688313A GB22665/50A GB2266550A GB688313A GB 688313 A GB688313 A GB 688313A GB 22665/50 A GB22665/50 A GB 22665/50A GB 2266550 A GB2266550 A GB 2266550A GB 688313 A GB688313 A GB 688313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- water
- cellulose
- content
- melting
- 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
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/22—Post-esterification treatments, including purification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Cosmetics (AREA)
- Artificial Filaments (AREA)
Abstract
A cellulose derivative having a content of water between that which it would normally have after being exposed to the open air and that of the saturation point observed on melting is brought into the molten state and worked up into threads or other shaped structures. On exposure to the open air, cellulose triacetate takes up 0.1-0.3 per cent of water; a partially hydrolysed cellulose acetate may take up about 1.5 per cent. The saturation point observed on melting is that content of water above which evaporation of the water with foaming occurs when the cellulose derivative is melted. The presence of water in the cellulose derivative considerably reduces the melting-point and thus the temperature of the working-up process. The upper limit of the moisture content is usually not more than 10 per cent. For cellulose triacetate it is about 6 per cent and for a hydrolysed cellulose acetate it may be 8-9 per cent. The cellulose derivative may be dried to the desired moisture content during the manufacturing process or it may be sprayed with the required amount of water after the moisture content has been determined. The cellulose derivative is preferably brought to a finely-divided state prior to the melting operation, e.g. it may be of such a particle size that it will pass through a screen of 1 mm. mesh. Dyes, pigments, or other materials may be incorporated in the cellulose derivative in milling machines or in melting vessels. In examples, there are used cellulose acetate with a combined acetic acid content of 52.5 per cent and a water content of 5.5 per cent (m.p. 150 DEG C.); cellulose acetate with an acetic acid content of 56.3 per cent and water content of 4.0 per cent (m.p. 180 DEG C.) or 9.0 per cent (m.p. 140 DEG C.); cellulose triacetate with a water content of 3.0 per cent (m.p. 200 DEG C.) or 6.0 per cent (m.p. 160 DEG C.); cellulose tripropionate with a water content of 2.0 per cent (m.p. 160 DEG C.) or 5.0 per cent (m.p. 150 DEG C.).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH688313X | 1949-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB688313A true GB688313A (en) | 1953-03-04 |
Family
ID=4529039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22665/50A Expired GB688313A (en) | 1949-09-14 | 1950-09-14 | Process for working up molten cellulose derivatives into threads and other shaped articles |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2673163A (en) |
| BE (1) | BE498083A (en) |
| CH (1) | CH277668A (en) |
| FR (1) | FR1042620A (en) |
| GB (1) | GB688313A (en) |
| NL (1) | NL156003B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6224811B1 (en) * | 1999-01-29 | 2001-05-01 | Celanese Acetate Llc | Thermal bonding of wet cellulose based fibers |
| US20070017395A1 (en) * | 2005-07-22 | 2007-01-25 | Neri Joel D | Method and apparatus for uniformly heating a substrate |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1516225A (en) * | 1923-11-15 | 1924-11-18 | Eastman Kodak Co | Process of manufacturing cellulose acetate |
| GB285829A (en) * | 1927-02-22 | 1928-12-06 | Ste Chim Usines Rhone | Process of manufacture of powdered plastic material |
| US1987610A (en) * | 1930-07-08 | 1935-01-15 | Celanese Corp | Organic ester of cellulose and method of treating the same |
| GB413262A (en) * | 1932-10-06 | 1934-07-12 | British Celanese | Treatment of cellulose derivatives |
| GB447187A (en) * | 1934-11-06 | 1936-05-06 | Arthur Eichengruen | Process for the production of moulding powders |
| US2180009A (en) * | 1938-06-16 | 1939-11-14 | Eastman Kodak Co | Precipitation of cellulose triacetate |
| US2303339A (en) * | 1938-10-18 | 1942-12-01 | Celanese Corp | Manufacture of artificial materials |
| US2303340A (en) * | 1939-05-16 | 1942-12-01 | Celanese Corp | Production of artificial materials |
| US2356277A (en) * | 1940-10-25 | 1944-08-22 | Celanese Corp | Treatment of cellulose acetate |
| US2346210A (en) * | 1941-02-05 | 1944-04-11 | Du Pont | Method for improving organic derivatives of cellulose |
| US2571975A (en) * | 1947-05-10 | 1951-10-16 | Du Pont | Melt spinning process |
-
0
- NL NL7312157.A patent/NL156003B/en unknown
- BE BE498083D patent/BE498083A/xx unknown
-
1949
- 1949-09-14 CH CH277668D patent/CH277668A/en unknown
-
1950
- 1950-09-11 US US184333A patent/US2673163A/en not_active Expired - Lifetime
- 1950-09-13 FR FR1042620D patent/FR1042620A/en not_active Expired
- 1950-09-14 GB GB22665/50A patent/GB688313A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL156003B (en) | |
| BE498083A (en) | |
| CH277668A (en) | 1951-09-15 |
| FR1042620A (en) | 1953-11-03 |
| US2673163A (en) | 1954-03-23 |
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