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GB1130323A - Process for preparing lactam polymers - Google Patents

Process for preparing lactam polymers

Info

Publication number
GB1130323A
GB1130323A GB86966A GB86966A GB1130323A GB 1130323 A GB1130323 A GB 1130323A GB 86966 A GB86966 A GB 86966A GB 86966 A GB86966 A GB 86966A GB 1130323 A GB1130323 A GB 1130323A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
dimethyl
lactams
azetidinone
catalyst
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
GB86966A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1130323A publication Critical patent/GB1130323A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14Lactams
    • C08G69/22Beta-lactams

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyamides (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1,130,323. Poly-#-lactams. FARBWERKE HOECHST A.G. 7 Jan., 1966 [7 Jan., 1965], No. 869/66. Heading C3R. Poly-#-lactams are produced by adding the lactam dropwise to a solution or dispersion of a basic catalyst in an inert liquid. Suitable lactams are those which are unsubstituted in the N-position but may contain up to 4 substituents on the α- and #-carbon atoms, these substituents containing up to a total of 12 aliphatic carbon atoms or 1 aromatic group and up to 9 aliphatic carbon atoms. A divalent substituent may be present giving rise to a ring in the molecule. Specified lactams include 4-methyl azetidinone, 4-vinyl azetidinone, 3,3-dimethyl azetidinone and 4,4-dimethyl azetidinone. Basic catalysts specified include the potassium salt of α-pyrrolidone. Solvents or dispersing media for the catalyst specified include dimethyl sulphoxide, tetramethylene sulphone, phosphoric acid tris(dimethyl amide), dimethyl formamide and N-methyl pyrrolidone. An initiator may be added to the catalyst before or simultaneously with the addition of monomer. Initiators specified include oxalyl pyrrolidone. A chain terminator, e.g. water, may also be added. The rate of lactam addition may equal the rate of consumption and the polymerization temperature may be between -15‹ and + 120‹ C. In a particular embodiment of the invention the catalyst solution or dispersion is emulsified with a liquid with which it is only partially miscible. This liquid may, however, be completely miscible with the lactam. Suitable liquids are C 5-24 aliphatic or cycloaliphatic hydrocarbons, e.g. kerosene (b.p. 160-180‹ C.), aliphatic ethers having 1-3 ether oxygen atoms and 4-24 carbon atoms, e.g. isopropyl ether, araliphatic ethers having 1-3 ether oxygen atoms, 6-24 aliphatic carbon atoms and 1-3 phenyl radicals or araliphatic hydrocarbons having 1-3 phenyl radicals and 3-24 aliphatic carbon atoms, e.g. isododecyl benzene. The emulsion may be formed with the aid of an emulsifier, e.g. a sulphonamide of an ethylenepropylene copolymer of repeating unit a thickener or a protective colloid. In Examples (2-4) a small quantity of monomer is mixed with the catalyst before the solution is emulsified. In Example (2) polyisobutylene is present.
GB86966A 1965-01-07 1966-01-07 Process for preparing lactam polymers Expired GB1130323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0044889 1965-01-07

Publications (1)

Publication Number Publication Date
GB1130323A true GB1130323A (en) 1968-10-16

Family

ID=7100250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB86966A Expired GB1130323A (en) 1965-01-07 1966-01-07 Process for preparing lactam polymers

Country Status (4)

Country Link
BE (1) BE674838A (en)
DE (1) DE1570529A1 (en)
FR (1) FR1463301A (en)
GB (1) GB1130323A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116515102A (en) * 2022-01-21 2023-08-01 苏州万维生命科学技术有限公司 Star-shaped beta-antibacterial glycopeptide, and preparation method and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116515102A (en) * 2022-01-21 2023-08-01 苏州万维生命科学技术有限公司 Star-shaped beta-antibacterial glycopeptide, and preparation method and application thereof

Also Published As

Publication number Publication date
BE674838A (en) 1966-07-07
DE1570529A1 (en) 1970-03-05
FR1463301A (en) 1966-12-23

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