GB1076310A - Process for the alkaline polymerisation of lactams - Google Patents
Process for the alkaline polymerisation of lactamsInfo
- Publication number
- GB1076310A GB1076310A GB2469266A GB2469266A GB1076310A GB 1076310 A GB1076310 A GB 1076310A GB 2469266 A GB2469266 A GB 2469266A GB 2469266 A GB2469266 A GB 2469266A GB 1076310 A GB1076310 A GB 1076310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbamate
- bis
- cocatalyst
- triethylene glycol
- lactams
- 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
- C08G69/18—Anionic polymerisation
- C08G69/20—Anionic polymerisation characterised by the catalysts used
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
Lactams having at least 5 ring carbon atoms are polymerized above their m.p. in the presence of an alkaline catalyst and as a cocatalyst a compound of formula <FORM:1076310/C3/1> where R is aliphatic, cycloaliphatic, or aromatic, R1 is H or Me, n is greater than 1 and p is greater than 2. Lactams specified include capro-, capryl- and dodecanolactams and mixture thereof. Catalysts specified include Na, K and alkali-metal/lactam salts, e.g. sodium caprolactamate. 0.1-4 mole per cent may be used. Cocatalysts specified include hexamethylene bis (triethylene glycol carbamate), dicyclohexyl methane - 4,41 - bis (triethylene glycol carbamate), tolylene bis (triethylene glycol carbamate), tolylene bis (heptaethylene glycol carbamate) and tolylene bis (triethylene glycol monomethyl ether carbamate). They may be derived from the corresponding polyalkylene glycol and diisocyanate. 0.05-2 Mole per cent of cocatalyst may be used. The polymerization may be under an inert atmosphere at a temperature below the m.p. of the polymer product or between 140 DEG and 180 DEG C. The cocatalyst may be added to the lactam which is melted before addition of the catalyst or alternatively the cocatalyst may be added last. The polymerization may take place in a mould.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR22793A FR1448966A (en) | 1965-06-29 | 1965-06-29 | Process for the alkaline polymerization of lactams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1076310A true GB1076310A (en) | 1967-07-19 |
Family
ID=8583373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2469266A Expired GB1076310A (en) | 1965-06-29 | 1966-06-02 | Process for the alkaline polymerisation of lactams |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT264835B (en) |
| BE (1) | BE683294A (en) |
| CH (1) | CH449259A (en) |
| ES (1) | ES328488A1 (en) |
| FR (1) | FR1448966A (en) |
| GB (1) | GB1076310A (en) |
| LU (1) | LU51419A1 (en) |
| NL (1) | NL6608591A (en) |
-
1965
- 1965-06-29 FR FR22793A patent/FR1448966A/en not_active Expired
-
1966
- 1966-06-02 GB GB2469266A patent/GB1076310A/en not_active Expired
- 1966-06-21 NL NL6608591A patent/NL6608591A/xx unknown
- 1966-06-28 LU LU51419A patent/LU51419A1/xx unknown
- 1966-06-28 BE BE683294D patent/BE683294A/xx unknown
- 1966-06-28 ES ES0328488A patent/ES328488A1/en not_active Expired
- 1966-06-29 AT AT623366A patent/AT264835B/en active
- 1966-06-29 CH CH940866A patent/CH449259A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE683294A (en) | 1966-12-28 |
| CH449259A (en) | 1967-12-31 |
| LU51419A1 (en) | 1966-08-29 |
| AT264835B (en) | 1968-09-10 |
| FR1448966A (en) | 1966-03-18 |
| NL6608591A (en) | 1966-12-30 |
| ES328488A1 (en) | 1967-04-01 |
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