GB1042228A - Continuous production of polyamide articles - Google Patents
Continuous production of polyamide articlesInfo
- Publication number
- GB1042228A GB1042228A GB3891064A GB3891064A GB1042228A GB 1042228 A GB1042228 A GB 1042228A GB 3891064 A GB3891064 A GB 3891064A GB 3891064 A GB3891064 A GB 3891064A GB 1042228 A GB1042228 A GB 1042228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rate
- introduction
- tube
- polyamide
- factor
- 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
- C08G69/04—Preparatory processes
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
Filaments, films and ribbons of high M.W. linear polyamide are produced from either (a) a C6- 12 o -aminoaliphatic carboxylic acid, (b) a polymethylene diammonium salt of a C8- 24 aliphatic a ,o -dicarboxylic acid or (c) an aromatic diammonium dicarboxylate salt or aminocarboxylic acid as defined below, by (I) pumping the monomer in aqueous solution along a tube which has an internal diameter not exceeding 4.5 cm. and is heated to the polymerization temperature, the pressure being at least 14 atmospheres at the entry of the tube decreasing as a continuous monotoxic single-valued function of the distance along the tube to atmospheric or below at the exit but at any point permitting evolution of steam so that at least 90% of the total theoretical water of condensation is removed, (II) collecting the polyamide so formed in a heated reservoir and (III) withdrawing the collected material and melt spinning it characterized in that the rate of introduction of monomer into the tube is varied so that the polyamide level in the reservoir remains constant the rate being reduced from M + a to M - a by reducing the rate of introduction of solution by a factor (M + b)/(M + a) and reducing the solution concentration by a factor (M + b)/(M - a) and conversely increasing the rate of introduction of monomer by increasing the rate of introduction of solution by a factor (M + a)/(M + b) and increasing its concentration by a factor (M - a)/(M + b), M being the mean polyamide output required in mass per unit time and a and b being fractions of M, a between 0 and 1/5 M and b between 0 and 1/2 a. The aromatic diammonium dicarboxylate salt may be derived from a diamine of formula NH2-X-NH2 and a dicarboxylic acid of formula HOCO-Y-COOH wherein X represents a chain of p-methylene groups containing, not joined directly to nitrogen; 1-, m- or p-phenylene links and Y is a chain of r-methylene groups containing sm- or p-phenylene groups, q and s being 0-2 at least one not being 0, p being at least 2 but at least 6 if q is 0, r being at least 4 if s is 0, p+r being at least 6. The aromatic amino-carboxylic acid may be of formula NH2-Z-COOH wherein Z represents a chain of t-methylene groups and, not joined directly to nitrogen, um- or p-phenylene links, u being 1 or 2 and t at least 3. X, Y or Z may carry alkyl substituents and contain -O-links providing the groups: -O-O-, -O-CH2-N- and -O-CH2-CH2-CO-are absent. Monomers specified include hexamethylene diammonium adipate. Monofunctional acids and amines, e.g. acetic acid, and free diacids or diamines, e.g. hexamethylene diamine may be prosent in the reaction mixture. Other additives may be dyes, pigments, e.g. TiO2, dyestuff precursors, heat and light stabilizers, plasticizers, delustrants, other polyamides and other resins. The process may be carried out so that the rate of introduction of water into the polymerization tube is constant.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3891064A GB1042228A (en) | 1964-09-24 | 1964-09-24 | Continuous production of polyamide articles |
LU49513A LU49513A1 (en) | 1964-09-24 | 1965-09-22 | |
FR32643A FR1462289A (en) | 1964-09-24 | 1965-09-24 | Improvements in the manufacture of polyamides |
NL6512416A NL6512416A (en) | 1964-09-24 | 1965-09-24 | |
BE670118A BE670118A (en) | 1964-09-24 | 1965-09-24 | |
DE1965B0083876 DE1570299B2 (en) | 1964-09-24 | 1965-09-24 | CONTINUOUS PROCESS FOR MANUFACTURING LONGITUDINAL MOLDED OBJECTS FROM POLYAMIDES |
CH1324565A CH487950A (en) | 1964-09-24 | 1965-09-24 | Continuous process for the production of elongated objects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3891064A GB1042228A (en) | 1964-09-24 | 1964-09-24 | Continuous production of polyamide articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1042228A true GB1042228A (en) | 1966-09-14 |
Family
ID=10406450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3891064A Expired GB1042228A (en) | 1964-09-24 | 1964-09-24 | Continuous production of polyamide articles |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE670118A (en) |
CH (1) | CH487950A (en) |
DE (1) | DE1570299B2 (en) |
GB (1) | GB1042228A (en) |
LU (1) | LU49513A1 (en) |
NL (1) | NL6512416A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3010093A1 (en) * | 2013-09-04 | 2015-03-06 | Arkema France | |
CN104420001A (en) * | 2013-09-04 | 2015-03-18 | 苏州翰普高分子材料有限公司 | Monofilament based on polyamide composition |
-
1964
- 1964-09-24 GB GB3891064A patent/GB1042228A/en not_active Expired
-
1965
- 1965-09-22 LU LU49513A patent/LU49513A1/xx unknown
- 1965-09-24 NL NL6512416A patent/NL6512416A/xx unknown
- 1965-09-24 CH CH1324565A patent/CH487950A/en not_active IP Right Cessation
- 1965-09-24 BE BE670118A patent/BE670118A/xx unknown
- 1965-09-24 DE DE1965B0083876 patent/DE1570299B2/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3010093A1 (en) * | 2013-09-04 | 2015-03-06 | Arkema France | |
EP2845930A1 (en) * | 2013-09-04 | 2015-03-11 | Arkema France | Monofilament based on a polyamide composition |
CN104420003A (en) * | 2013-09-04 | 2015-03-18 | 阿克马法国公司 | Monofilament based on a polyamide composition |
CN104420001A (en) * | 2013-09-04 | 2015-03-18 | 苏州翰普高分子材料有限公司 | Monofilament based on polyamide composition |
Also Published As
Publication number | Publication date |
---|---|
DE1570299B2 (en) | 1973-06-28 |
CH487950A (en) | 1970-03-31 |
DE1570299A1 (en) | 1972-04-13 |
BE670118A (en) | 1966-03-24 |
NL6512416A (en) | 1966-03-25 |
LU49513A1 (en) | 1965-11-22 |
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