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GB762444A - Process for the polymerisation of cyclic lactams containing seven or more ring members - Google Patents

Process for the polymerisation of cyclic lactams containing seven or more ring members

Info

Publication number
GB762444A
GB762444A GB32454/54A GB3245454A GB762444A GB 762444 A GB762444 A GB 762444A GB 32454/54 A GB32454/54 A GB 32454/54A GB 3245454 A GB3245454 A GB 3245454A GB 762444 A GB762444 A GB 762444A
Authority
GB
United Kingdom
Prior art keywords
polymerization
polymerisation
ring members
caprolactam
polymerized
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
GB32454/54A
Inventor
Adolf Hamann
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.)
Filmfabrik Wolfen VEB
Original Assignee
Filmfabrik Wolfen VEB
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
Priority to DEV7721A priority Critical patent/DE1013868B/en
Application filed by Filmfabrik Wolfen VEB filed Critical Filmfabrik Wolfen VEB
Priority to GB32454/54A priority patent/GB762444A/en
Publication of GB762444A publication Critical patent/GB762444A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/14—Preparation of salts or adducts of lactams

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyamides (AREA)

Abstract

Lactams containing seven or more ring atoms are polymerized with an alkali metal hydroxide in two stages by first bringing about the reaction between the alkali and the lactam at the boiling-point under considerably reduced pressure and then carrying out the polymerization at the polymerization temperature. In a preferred embodiment of the invention, the pressure is such that the mixture boils within the range 120 DEG to 150 DEG C. Specified lactams are e -caprolactam, enantholactam, heptane acid lactam and c -octane acid lactam. In the example, e -caprolactam is polymerized in the presence of sodium hydroxide, the first stage taking place at 140 DEG C. and 12 mm. of mercury, followed by polymerization at 240 DEG C. in the presence of oxygen-free nitrogen.
GB32454/54A 1954-09-01 1954-11-09 Process for the polymerisation of cyclic lactams containing seven or more ring members Expired GB762444A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEV7721A DE1013868B (en) 1954-09-01 1954-09-01 Process for the preparation of polyamides by polymerizing lactams having seven or more ring members
GB32454/54A GB762444A (en) 1954-09-01 1954-11-09 Process for the polymerisation of cyclic lactams containing seven or more ring members

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV7721A DE1013868B (en) 1954-09-01 1954-09-01 Process for the preparation of polyamides by polymerizing lactams having seven or more ring members
GB32454/54A GB762444A (en) 1954-09-01 1954-11-09 Process for the polymerisation of cyclic lactams containing seven or more ring members

Publications (1)

Publication Number Publication Date
GB762444A true GB762444A (en) 1956-11-28

Family

ID=29421432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32454/54A Expired GB762444A (en) 1954-09-01 1954-11-09 Process for the polymerisation of cyclic lactams containing seven or more ring members

Country Status (2)

Country Link
DE (1) DE1013868B (en)
GB (1) GB762444A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7040429B2 (en) 2001-10-10 2006-05-09 Invacare Corporation Wheelchair suspension

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251519A (en) * 1939-02-07 1941-08-05 Du Pont Process for making polymeric materials
DE906512C (en) * 1942-04-25 1954-03-15 Bobingen Ag Fuer Textil Faser Process for polymerizing lactams having seven or more ring members
DE904948C (en) * 1942-10-22 1954-02-25 Bobingen Ag Fuer Textil Faser Process for polymerizing lactams from ªÏ-aminocarboxylic acids

Also Published As

Publication number Publication date
DE1013868B (en) 1957-08-14

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