GB908220A - Improved polymerisation process - Google Patents
Improved polymerisation processInfo
- Publication number
- GB908220A GB908220A GB3021260A GB3021260A GB908220A GB 908220 A GB908220 A GB 908220A GB 3021260 A GB3021260 A GB 3021260A GB 3021260 A GB3021260 A GB 3021260A GB 908220 A GB908220 A GB 908220A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbamoyl
- caprolactam
- bis
- lactam
- phenyl
- 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
In a process for making polyamides by the alkaline polymerization of at least one monomeric lactam having at least six carbon atoms in the ring, an N-substituted carbamoyl lactam having at least six carbon atoms in the lactam ring is added to the anhydrous monomeric lactam and the mixture held at a temperature above the melting point of the lactam. Specified lactams are caprolactam, enantholactam, capryllactam, dodecanolactam, a -methylcaprolactam, b :d -dimethylcaprolactam and b -phenylcaprolactam. Conventional alkaline catalysts are specified. Specified N-substituted carbamoyl lactams are N-(phenyl-carbamoyl)-caprolactam, N-benzyl-carbamoylcaprolactam, N-cyclohexyl-carbamoyl-caprolactam, N-(a -naphthylcarbamoyl)-caprolactam, hexamethylene-bis-(N-carbamoyl-caprolactam), m-toluylene-bis-(N-carbamoyl-enantholactam), N-(p-brmoophenylcarbamoyl)-capryllactam, N-ethyl-carbamoyl-b -methyl caprolactam, ethylene-bis-(N-carbamoyl-b ,d -dimethyl caprolactam), N-methylcarbamoyl-b -phenyl-caprolactam, N-(p-nitrophenyl-carbamoyl)-a -methyl-caprolactam, N-isobutyl-carbamoyl-capralactam, N-(o-methoxyphenyl-carbamoyl)bis-caprolactam, N-allyl-carbamoyl-dodecanolactam and N-(b -chloroethyl-carbamoyl) caprolactam. Pigments and fillers, e.g. finely-divided metals, short glass fibres and graphite may also be present in the polymerization mixture. The examples describe the polymerization of caprolactam in the presence of sodium methoxide and:- (1) N-(phenyl-carbamoyl)-caprolactam; (2) N-(a -naphthyl-carbamoyl)-caprolactam and (3) hexamethylene bis-(N-carbamoyl-caprolactam).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3021260A GB908220A (en) | 1960-09-01 | 1960-09-01 | Improved polymerisation process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3021260A GB908220A (en) | 1960-09-01 | 1960-09-01 | Improved polymerisation process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB908220A true GB908220A (en) | 1962-10-17 |
Family
ID=10304059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3021260A Expired GB908220A (en) | 1960-09-01 | 1960-09-01 | Improved polymerisation process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB908220A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975191A1 (en) * | 2007-03-29 | 2008-10-01 | L. Brüggemann KG | Fiber reinforced anionic polyamide composites for structural applications and the manufacturing thereof |
US20130052444A1 (en) * | 2011-08-23 | 2013-02-28 | Basf Se | Process for producing moldings |
-
1960
- 1960-09-01 GB GB3021260A patent/GB908220A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975191A1 (en) * | 2007-03-29 | 2008-10-01 | L. Brüggemann KG | Fiber reinforced anionic polyamide composites for structural applications and the manufacturing thereof |
US20130052444A1 (en) * | 2011-08-23 | 2013-02-28 | Basf Se | Process for producing moldings |
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