GB763746A - Process for the continuous polymerisation of ª[-caprolactam - Google Patents
Process for the continuous polymerisation of ª[-caprolactamInfo
- Publication number
- GB763746A GB763746A GB17839/54A GB1783954A GB763746A GB 763746 A GB763746 A GB 763746A GB 17839/54 A GB17839/54 A GB 17839/54A GB 1783954 A GB1783954 A GB 1783954A GB 763746 A GB763746 A GB 763746A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- vessel
- pump
- polyamide
- caprolactam
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyamides (AREA)
Abstract
Shaped masses of polyamide are continuously formed by polymerizing e -caprolactam at 250-275 DEG C. and elevated pressure in presence of not more than 1 per cent water in a closed, filled vessel 4, to which is directly connected, e.g. by pipe 6, a pump 8 which presses the molten polyamide, with the entire water content, through a shaping nozzle or nozzles 9. The water is mixed with the lactam in mixing vessel 1 and delivered therefrom to vessel 4, by pump 3. Heating jackets 2, 5 and 6 enclose the whole apparatus. Pressure in the reaction vessel 4 is regulated by a pipe and valve (not shown) which returns excess caprolactam delivered by pump 3 to the vessel 1. The temperature in vessel 1 is below 110 DEG C. to prevent evaporation of the added water. Tube 4 is of such a length that the lactam-water mixture is retained there for about 8 hours. The pressure at the beginning of the tube is 15-35 atms. and at the end is about 5 atms. The extrusion device 9 may be a spinning nozzle for fine threads or monofils or may be a slot nozzle for bands or ribbons. Yarns may be stretched directly on a winding-machine after treatment with an emulsifying oil. Examples describe the production of stretched yarns. The water may be added as a substance which splits off water forming a polyamide, e.g. an amino acid or a diamine-dicarboxylic acid salt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH763746X | 1953-07-15 | ||
CH1103251X | 1953-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB763746A true GB763746A (en) | 1956-12-19 |
Family
ID=29421169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17839/54A Expired GB763746A (en) | 1953-07-15 | 1954-06-17 | Process for the continuous polymerisation of ª[-caprolactam |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1103251A (en) |
GB (1) | GB763746A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1093087B (en) * | 1957-04-06 | 1960-11-17 | Glanzstoff Ag | Process and device for the continuous production of polyamides from dicarboxylic acids and diamines |
US3156750A (en) * | 1959-06-18 | 1964-11-10 | Du Pont | Process of producing polycaprolactam monofilaments |
FR2414396A1 (en) * | 1978-01-16 | 1979-08-10 | Usi Far East Corp | INTEGRATED SYSTEM FOR THE FORMATION OF SYNTHETIC RESIN SHEETS |
-
1954
- 1954-06-17 GB GB17839/54A patent/GB763746A/en not_active Expired
- 1954-06-28 FR FR1103251D patent/FR1103251A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1093087B (en) * | 1957-04-06 | 1960-11-17 | Glanzstoff Ag | Process and device for the continuous production of polyamides from dicarboxylic acids and diamines |
US3156750A (en) * | 1959-06-18 | 1964-11-10 | Du Pont | Process of producing polycaprolactam monofilaments |
FR2414396A1 (en) * | 1978-01-16 | 1979-08-10 | Usi Far East Corp | INTEGRATED SYSTEM FOR THE FORMATION OF SYNTHETIC RESIN SHEETS |
Also Published As
Publication number | Publication date |
---|---|
FR1103251A (en) | 1955-11-02 |
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