ES395984A1 - Production of polyamide mouldings by the activated anionic poly merisation of lactams in injection-moulding apparatus - Google Patents

Production of polyamide mouldings by the activated anionic poly merisation of lactams in injection-moulding apparatus

Info

Publication number
ES395984A1
ES395984A1 ES395984A ES395984A ES395984A1 ES 395984 A1 ES395984 A1 ES 395984A1 ES 395984 A ES395984 A ES 395984A ES 395984 A ES395984 A ES 395984A ES 395984 A1 ES395984 A1 ES 395984A1
Authority
ES
Spain
Prior art keywords
carbon atoms
radical
atmospheres
pressure
alkyl radical
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
ES395984A
Other languages
Spanish (es)
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of ES395984A1 publication Critical patent/ES395984A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • 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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Polyamides (AREA)

Abstract

Procedure for obtaining polyamide molded parts, by polymerization of a storage stable polymerizable mixture consisting of a lactam having at least 6 ring members, of a catalyst chosen from the group consisting of an alkali metal salt and a salt of alkaline earth metal of a carboxylic acid corresponding to the general formula I, II, and III **(See formula)** where R and R', which are the same or different, represent an alkyl radical having 1 to 10 carbon atoms, aryl radical having 6 to 10 carbon atoms, hydrogen or another form of cycloaliphatic ring with 6 to 10 atoms carbon X represents an electrophilic group, such as an aryl, cyano, ester, acyl or aroyl radical, R'' represents a linear or branched alkyl radical having 1 to 16 carbon atoms or a mononuclear or polynuclear aryl radical having from 6 to 18 carbon atoms, and R'''represents a divalent organic radical, especially a linear or branched alkyl radical having 6 to 10 carbon atoms, and from an activator, characterized in that the polymerizable mixture is polymerized to a pressure of at least 50 atmospheres in the cylinder of a screw or piston injection molding apparatus injected into a mold at a pressure of at least 300 atmospheres, the molded part then being allowed to solidify at a pressure continuous of at least 100 atmospheres. (Machine-translation by Google Translate, not legally binding)
ES395984A 1970-10-14 1971-10-14 Production of polyamide mouldings by the activated anionic poly merisation of lactams in injection-moulding apparatus Expired ES395984A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702050440 DE2050440A1 (en) 1970-10-14 1970-10-14 Manufacture of molded parts from polyamides by activated anionic polymerization of lactams in injection molding machines

Publications (1)

Publication Number Publication Date
ES395984A1 true ES395984A1 (en) 1973-12-16

Family

ID=5785110

Family Applications (1)

Application Number Title Priority Date Filing Date
ES395984A Expired ES395984A1 (en) 1970-10-14 1971-10-14 Production of polyamide mouldings by the activated anionic poly merisation of lactams in injection-moulding apparatus

Country Status (9)

Country Link
BE (1) BE773872A (en)
CA (1) CA980965A (en)
CH (1) CH553236A (en)
DE (1) DE2050440A1 (en)
ES (1) ES395984A1 (en)
FR (1) FR2111400A5 (en)
GB (1) GB1348726A (en)
IT (1) IT942218B (en)
NL (1) NL7114151A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944629A (en) * 1974-06-24 1976-03-16 Monsanto Company Polyester initiated anionic catalyzed polymerization of lactam
JPS5959427A (en) * 1982-09-30 1984-04-05 Ube Ind Ltd Process for reaction injection molding
DE10303882A1 (en) * 2003-01-31 2004-08-12 Hennecke Gmbh Process for the production of molded polyurethane parts
EP4059989B1 (en) * 2019-11-11 2023-12-06 Kureha Corporation Method for producing polyamide, and polyamide

Also Published As

Publication number Publication date
FR2111400A5 (en) 1972-06-02
CH553236A (en) 1974-08-30
CA980965A (en) 1976-01-06
NL7114151A (en) 1972-04-18
BE773872A (en) 1972-01-31
DE2050440A1 (en) 1972-04-20
IT942218B (en) 1973-03-20
GB1348726A (en) 1974-03-20

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