GB1364201A - Continuous production of extruded articles of polyamide foam - Google Patents

Continuous production of extruded articles of polyamide foam

Info

Publication number
GB1364201A
GB1364201A GB79372A GB79372A GB1364201A GB 1364201 A GB1364201 A GB 1364201A GB 79372 A GB79372 A GB 79372A GB 79372 A GB79372 A GB 79372A GB 1364201 A GB1364201 A GB 1364201A
Authority
GB
United Kingdom
Prior art keywords
lactam
mixture
polyamide foam
caprolactam
jan
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
GB79372A
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 GB1364201A publication Critical patent/GB1364201A/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
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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

1364201 Extruded polyamide foam articles BAYER AG 7 Jan 1972 [12 Jan 1971] 793/72 Heading C3C [Also in Division B5] Extruded polyamide foam articles are continuously produced by introducing a polymerisable and foamable mixture comprising (a) a lactam having at least 5 ring members, (b) a polyisocyanate and optionally a mono-isocyanate, both of which may be masked, and (c) an alkaline catalyst into the feed of a screw extruder under a pressure of at least 1À2 atmospheres, polymerizing the mixture in the barrel of the extruder at a temperature above the m.p. of the resulting polyamide, and extruding the mixture while foaming through a nozzle heated to 210-290‹ C. The lactam may be α-pyrrolidone, #-caprolactam, oenanthic lactam, caprylic lactam, decanolactam, undecanolactam, lauric lactam, pentadecanolactam, hexadecanolactam or methylcyclohexanone isoxirne. 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 carbon black calcium carbonate or aluminium powder.
GB79372A 1971-01-12 1972-01-07 Continuous production of extruded articles of polyamide foam Expired GB1364201A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712101152 DE2101152A1 (en) 1971-01-12 1971-01-12 Process for the continuous production of extrusion profiles from polyamide foam by activated anionic polymerization of lactams

Publications (1)

Publication Number Publication Date
GB1364201A true GB1364201A (en) 1974-08-21

Family

ID=5795633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB79372A Expired GB1364201A (en) 1971-01-12 1972-01-07 Continuous production of extruded articles of polyamide foam

Country Status (4)

Country Link
DE (1) DE2101152A1 (en)
GB (1) GB1364201A (en)
IT (1) IT948152B (en)
NL (1) NL7200337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938306B2 (en) 1997-08-08 2005-09-06 Joubert S.A. High strength hook, in particular for elastic cable
CN117024951A (en) * 2023-10-10 2023-11-10 季华合越科技(佛山)有限公司 Resin composition, glass fiber composite material, preparation method and application thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2361452C2 (en) * 1973-12-10 1985-03-07 Bayer Ag, 5090 Leverkusen Process for the production of polyamides with integral skin foam structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938306B2 (en) 1997-08-08 2005-09-06 Joubert S.A. High strength hook, in particular for elastic cable
CN117024951A (en) * 2023-10-10 2023-11-10 季华合越科技(佛山)有限公司 Resin composition, glass fiber composite material, preparation method and application thereof
CN117024951B (en) * 2023-10-10 2024-01-09 季华合越科技(佛山)有限公司 Resin composition, glass fiber composite material, preparation method and application thereof

Also Published As

Publication number Publication date
DE2101152A1 (en) 1972-08-03
IT948152B (en) 1973-05-30
NL7200337A (en) 1972-07-14

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Legal Events

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