GB1137339A - A process for the production of foam from polymers and/or copolymers of vinyl chloride - Google Patents

A process for the production of foam from polymers and/or copolymers of vinyl chloride

Info

Publication number
GB1137339A
GB1137339A GB3771667A GB3771667A GB1137339A GB 1137339 A GB1137339 A GB 1137339A GB 3771667 A GB3771667 A GB 3771667A GB 3771667 A GB3771667 A GB 3771667A GB 1137339 A GB1137339 A GB 1137339A
Authority
GB
United Kingdom
Prior art keywords
zone
cooling
pressure
atm
weight
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
GB3771667A
Inventor
Carel Jan Breukink
Jacob Vermeulen
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1137339A publication Critical patent/GB1137339A/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
    • C08J9/12—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 physical blowing agent
    • C08J9/14—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 physical blowing agent organic
    • C08J9/142—Compounds containing oxygen but no halogen atom
    • 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
    • B29C44/3442—Mixing, kneading or conveying the foamable 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
    • 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
    • C08J9/12—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 physical blowing agent
    • C08J9/14—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 physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • 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
    • C08J2327/00—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
    • C08J2327/02—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 not modified by chemical after-treatment
    • C08J2327/04—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 not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

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

1,137,339. Extruding foamed polyvinyl chloride. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 16 Aug., 1967 [18 Aug., 1966], No. 37716/67. Heading B5A. [Also in Division C3] In the extrusion of films, sheets, rods or pipes of foamed polyvinyl chloride, the working temperature and pressure conditions within a single shaft extruder are as follows: (a) a polymer temperature of 170-230‹ C. under a pressure of at least 150 atm. immediately upstream of mixing zone 7, (b) a pressure of at least 50 atm. at the downstream end of cooling zone 8, (c) a pressure of at least 15 atm. just upstream of extrusion orifice 5, and (d) a temperature of 80-135‹ C. at the extrusion orifice. Mixing zone 7 comprises an inlet 2 for the injection of a liquid blowing agent whose normal boiling-point is below 100‹ C. The average residence time of the material between inlet 2 and the downstream end of cooling zone 8 is 1-7 mins. The extruder comprises a screw flight 10 on a tapered shaft 9 forming a plasticizing zone 6, and mixing zone 7 comprises collars 12 with axial or helical peripheral grooves terminated upstream by a throttle 11. Alternatively, collars 12 may be replaced by rounded projections. Cooling zone 8 comprises a stirrer 14 provided with blades 15 and cooling is by contact of the material with the barrel wall. If required, however, cooling and heating elements may be accommodated in the barrel and shaft 9. To the polymer may be added up to 5% by weight of a conventional plasticizer, 10-25% by weight of a blowing agent and 1-2% by weight of a nucleating agent. Numerous stabilizers, blowing and nucleating agents are listed and four examples are given in which the blowing agent is acetone. A preferred foam product has a density less than 0.3 g/ml. and an average cell diameter less than 0.05 cm.
GB3771667A 1966-08-18 1967-08-16 A process for the production of foam from polymers and/or copolymers of vinyl chloride Expired GB1137339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6611678A NL6611678A (en) 1966-08-18 1966-08-18

Publications (1)

Publication Number Publication Date
GB1137339A true GB1137339A (en) 1968-12-18

Family

ID=19797443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3771667A Expired GB1137339A (en) 1966-08-18 1967-08-16 A process for the production of foam from polymers and/or copolymers of vinyl chloride

Country Status (4)

Country Link
BE (1) BE702706A (en)
DE (1) DE1729005A1 (en)
GB (1) GB1137339A (en)
NL (1) NL6611678A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039117A1 (en) * 1980-04-26 1981-11-04 Stamicarbon B.V. Rigid polyvinyl chloride foam
EP0074647A1 (en) * 1981-09-14 1983-03-23 The B.F. GOODRICH Company Foamed chlorinated polyvinyl chloride and compositions for making same
GB2179886A (en) * 1985-07-24 1987-03-18 Sekisui Plastics Method and apparatus for production of foamed thermoplastics material
CH691046A5 (en) * 1996-06-05 2001-04-12 Veka Ag Thermoplastic material for use in baths and whirlpool tubs, cars, wall coverings and pay phone hoods consists at least partly of poly (vinyl chloride) foam
WO2005052042A2 (en) * 2003-11-25 2005-06-09 Honeywell International Inc. Mixtures of hydrofluorcarbons and acids as foam blowing agents

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK183380A (en) * 1979-05-11 1980-11-12 Shinetsu Chemical Co PROCEDURE FOR THE PREPARATION OF FOAMED CELL BODY OF VINYL CHLORIDE BASE RESIN
US4401612A (en) * 1981-06-17 1983-08-30 The B. F. Goodrich Company Method and apparatus for extruding foam polymeric materials involving the use of an extrusion screw having spaced multiple flight mixing means thereon
US4393017A (en) * 1981-06-18 1983-07-12 The B. F. Goodrich Company Apparatus and method for making foamed resin products
US4409165A (en) * 1981-06-18 1983-10-11 The B. F. Goodrich Company Method and apparatus for extruding a cellular product

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039117A1 (en) * 1980-04-26 1981-11-04 Stamicarbon B.V. Rigid polyvinyl chloride foam
EP0039118A1 (en) * 1980-04-26 1981-11-04 Stamicarbon B.V. Rigid polyvinyl chloride foam
EP0040443A2 (en) * 1980-04-26 1981-11-25 Stamicarbon B.V. Method for the preparation of rigid polyvinyl chloride foams
EP0040443A3 (en) * 1980-04-26 1981-12-02 Stamicarbon B.V. Method for the preparation of rigid polyvinyl chloride foams
EP0074647A1 (en) * 1981-09-14 1983-03-23 The B.F. GOODRICH Company Foamed chlorinated polyvinyl chloride and compositions for making same
GB2179886A (en) * 1985-07-24 1987-03-18 Sekisui Plastics Method and apparatus for production of foamed thermoplastics material
GB2179886B (en) * 1985-07-24 1989-09-20 Sekisui Plastics Method and apparatus for production of foamed thermoplastics material
CH691046A5 (en) * 1996-06-05 2001-04-12 Veka Ag Thermoplastic material for use in baths and whirlpool tubs, cars, wall coverings and pay phone hoods consists at least partly of poly (vinyl chloride) foam
WO2005052042A2 (en) * 2003-11-25 2005-06-09 Honeywell International Inc. Mixtures of hydrofluorcarbons and acids as foam blowing agents
WO2005052042A3 (en) * 2003-11-25 2005-12-08 Honeywell Int Inc Mixtures of hydrofluorcarbons and acids as foam blowing agents

Also Published As

Publication number Publication date
BE702706A (en) 1968-02-16
NL6611678A (en) 1968-02-19
DE1729005A1 (en) 1971-06-03

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