GB1348726A - 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
GB1348726A
GB1348726A GB4503871A GB4503871A GB1348726A GB 1348726 A GB1348726 A GB 1348726A GB 4503871 A GB4503871 A GB 4503871A GB 4503871 A GB4503871 A GB 4503871A GB 1348726 A GB1348726 A GB 1348726A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
lactam
injection
atms
pressure
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
GB4503871A
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 GB1348726A publication Critical patent/GB1348726A/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

Abstract

1348726 Injection moulding polyamides BAYER AG 28 Sept 1971 [14 Oct 1970] 45038/71 Heading B5A [Also in Division C3] Polymerizable lactam mixtures which are storage stable are produced by using a weakly basic catalyst precursor which is converted by decarboxylation, into a strongly basic catalyst on heating. A mixture containing a lactam having at least 5 ring members, a catalyst precursor and an activator is polymerized at a pressure of at least 50 atms. in the barrel of a screw or piston injection apparatus, injected into the mould at a pressure of at least 300 atms., and subsequently solidified in the mould under a follow up pressure of at least 100 atms.; the catalyst precursor is an alkali metal or an alkaline earth metal salt of a carboxylic acid having one of the general Formulae I, II, III where R and R<SP>1</SP>, which can be the same or different, each represents an alkyl radical having 1-10 carbon atoms, an aryl radical having 6- 10 carbon atoms, or hydrogen, or together with the carbon atom to which they are attached form a cycloaliphatic ring having 6-10 carbon atoms, X represents an electron attracting group, R<SP>11</SP> represents a linear or branched alkyl radical having 1-16 carbon atoms or a mononuclear or polynuclear aryl radical having 6-18 carbon atoms, and R<SP>111</SP> represents a divalent organic radical. The lactam used may be pyrrolidone, caprolactam, caprylic lactam or lauric lactam. Polymerization may be completed before injection into the mould or may continue during the moulding process.
GB4503871A 1970-10-14 1971-09-28 Production of polyamide mouldings by the activated anionic poly merisation of lactams in injection-moulding apparatus Expired GB1348726A (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
GB1348726A true GB1348726A (en) 1974-03-20

Family

ID=5785110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4503871A Expired GB1348726A (en) 1970-10-14 1971-09-28 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1442872A1 (en) * 2003-01-31 2004-08-04 Hennecke GmbH Process and apparatus for manufacturing molded polyurethane parts
CN114514262A (en) * 2019-11-11 2022-05-17 株式会社吴羽 Method for producing polyamide, and polyamide

Families Citing this family (2)

* 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1442872A1 (en) * 2003-01-31 2004-08-04 Hennecke GmbH Process and apparatus for manufacturing molded polyurethane parts
CN114514262A (en) * 2019-11-11 2022-05-17 株式会社吴羽 Method for producing polyamide, and polyamide

Also Published As

Publication number Publication date
FR2111400A5 (en) 1972-06-02
IT942218B (en) 1973-03-20
CA980965A (en) 1976-01-06
ES395984A1 (en) 1973-12-16
CH553236A (en) 1974-08-30
BE773872A (en) 1972-01-31
DE2050440A1 (en) 1972-04-20
NL7114151A (en) 1972-04-18

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees