GB1363562A - Production of polyamide foam mouldings in injection-moulding apparatus - Google Patents

Production of polyamide foam mouldings in injection-moulding apparatus

Info

Publication number
GB1363562A
GB1363562A GB122972A GB122972A GB1363562A GB 1363562 A GB1363562 A GB 1363562A GB 122972 A GB122972 A GB 122972A GB 122972 A GB122972 A GB 122972A GB 1363562 A GB1363562 A GB 1363562A
Authority
GB
United Kingdom
Prior art keywords
lactam
mixture
injection
polyamide
caprolactam
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
GB122972A
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 GB1363562A publication Critical patent/GB1363562A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
    • 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
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyamides (AREA)

Abstract

1363562 Injection moulded polyamide foams BAYER AG 11 Jan 1972 [12 Jan 1971] 1229/72 Heading C3C Polyamide foam mouldings are continuously made by introducing a foamable and polymerizable mixture comprising (a) a lactam having at least 5 ring members (b) a polyisocyanate, or a mixture of a mono-isocyanate and a polyisocyanate, both the isocyanates may be masked, and (c) an alkaline polymerization catalyst into the feed opening of an injection moulder under a pressure of at least 1À2 atmospheres, polymerizing the mixture in the barrel of the injection moulder at a temperature above the m.p. of the resulting polyamide, injecting the mixture while foaming through a nozzle heated to 210-290‹ C. into a mould and after cooling, removing the moulding. The lactam may be α-pyrrolidone, #-caprolactam, oenanthic lactam, caprylic lactam, decanolactam, undecanolactam, lauric lactam, pentadecanolactam, hexadecanolactam or methyl cyclohexanone isoxime. In the examples the polymerizable mixture consisted of a lactam, sodium formate, N-benzyl acetamide, the addition product of hexamethylene diisocyanate or diphenyl methane-4,4<SP>1</SP>-diisocyanate and caprolactam and an organosiloxane hydroxyalkylene block copolymer, with optionally aluminium powder, glass fibres or a silicone.
GB122972A 1971-01-12 1972-01-11 Production of polyamide foam mouldings in injection-moulding apparatus Expired GB1363562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712101153 DE2101153A1 (en) 1971-01-12 1971-01-12 Manufacture of molded parts from polyamide foam by activated anionic polymerization of lactams in injection molding machines

Publications (1)

Publication Number Publication Date
GB1363562A true GB1363562A (en) 1974-08-14

Family

ID=5795634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB122972A Expired GB1363562A (en) 1971-01-12 1972-01-11 Production of polyamide foam mouldings in injection-moulding apparatus

Country Status (4)

Country Link
DE (1) DE2101153A1 (en)
GB (1) GB1363562A (en)
IT (1) IT948153B (en)
NL (1) NL7200338A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474945A1 (en) * 1980-02-04 1981-08-07 Rhone Poulenc Ind Lightweight polyamide foam moulding prodn. - by injection moulding in moulds provided with gas venting means
EP0106545A1 (en) * 1982-09-30 1984-04-25 Ube Industries, Ltd. Reaction injection molding method
CZ303182B6 (en) * 2010-08-06 2012-05-16 Kubánek@Vladimír Process for preparing modified synthetic fibrous material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474945A1 (en) * 1980-02-04 1981-08-07 Rhone Poulenc Ind Lightweight polyamide foam moulding prodn. - by injection moulding in moulds provided with gas venting means
EP0106545A1 (en) * 1982-09-30 1984-04-25 Ube Industries, Ltd. Reaction injection molding method
CZ303182B6 (en) * 2010-08-06 2012-05-16 Kubánek@Vladimír Process for preparing modified synthetic fibrous material

Also Published As

Publication number Publication date
DE2101153A1 (en) 1972-08-03
NL7200338A (en) 1972-07-14
IT948153B (en) 1973-05-30

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Legal Events

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