GB908220A - Improved polymerisation process - Google Patents

Improved polymerisation process

Info

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
Application number
GB3021260A
Inventor
Gerard Dunstan Buckley
Erno Laszlo Zichy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3021260A priority Critical patent/GB908220A/en
Publication of GB908220A publication Critical patent/GB908220A/en
Expired legal-status Critical Current

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).
GB3021260A 1960-09-01 1960-09-01 Improved polymerisation process Expired GB908220A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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