GB1354000A - Production of profiled articles of expanded plastics material - Google Patents

Production of profiled articles of expanded plastics material

Info

Publication number
GB1354000A
GB1354000A GB1354000DA GB1354000A GB 1354000 A GB1354000 A GB 1354000A GB 1354000D A GB1354000D A GB 1354000DA GB 1354000 A GB1354000 A GB 1354000A
Authority
GB
United Kingdom
Prior art keywords
extruder
weight
screw
mixture
plastics
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
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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
Priority claimed from DE19702044360 external-priority patent/DE2044360A1/en
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1354000A publication Critical patent/GB1354000A/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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • 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
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1354000 Extruded plastics foam BADISCHE ANILIN- & SODA-FABRIK AG 7 Sept 1971 [8 Sept 1970] 41632/71 Heading B5A [Also in Division C3] A process for the continuous production of profiled articles of expanded plastics material comprises forcing a plastics melt containing an expanding agent or mixture of expanding agents with or without other additives through a die followed by expansion, wherein a plastics melt is used which consists apart from expanding agent and any other additives of a mixture of 10-90 parts by weight of polyvinyl chloride or a vinyl chloride copolymer and 90-10 parts by weight of a copolymer of styrene and maleic anhydride or α-methyl-styrene having a comonomer content of 2-35% by weight of maleic anhydride or 2-80% by weight of α-methylstyrene and a mean molecular weight of 50,000-400,000 or 25,000-250,000 respectively. In Example 1 a twin-screw extruder having two temperature zones is used. The polymer mixture is melted in the first zone of the extruder at a barrel temperature of 170‹ C. after which methyl chloride under pressure is pumped into the extruder and in the second temperature zone cooling of the melt is effected at a barrel temperature of 70‹ C. Expansion takes place after extrusion through an outlet having a circular opening. In the second example a combination of two screw extruders is used, the first being the twin-screw extruder used in Example 1 and the second, arranged downstream of the first being a singlescrew extruder. The rotational speed in the first extruder is 60 r.p.m. and in the second is 4 r.p.m. whilst the screw fits snugly in the first extruder but in the second has a clearance of at least 0À4 cm.
GB1354000D 1970-09-08 1971-09-07 Production of profiled articles of expanded plastics material Expired GB1354000A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702044360 DE2044360A1 (en) 1970-09-08 1970-09-08 Process for the continuous Her position of profiled foam certificates
GB4163271 1971-09-07

Publications (1)

Publication Number Publication Date
GB1354000A true GB1354000A (en) 1974-05-22

Family

ID=25759696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1354000D Expired GB1354000A (en) 1970-09-08 1971-09-07 Production of profiled articles of expanded plastics material

Country Status (1)

Country Link
GB (1) GB1354000A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329272A (en) 1981-03-17 1982-05-11 Monsanto Company Flame-retardant polymers
CN111848909A (en) * 2020-07-31 2020-10-30 江苏绿艳高分子材料有限公司 NDI-based closed-cell microporous elastomer and one-step production method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329272A (en) 1981-03-17 1982-05-11 Monsanto Company Flame-retardant polymers
CN111848909A (en) * 2020-07-31 2020-10-30 江苏绿艳高分子材料有限公司 NDI-based closed-cell microporous elastomer and one-step production method thereof

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Legal Events

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