UST101402I4 - Process of paste extrusion - Google Patents

Process of paste extrusion Download PDF

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Publication number
UST101402I4
UST101402I4 US06/201,974 US20197480A UST101402I4 US T101402 I4 UST101402 I4 US T101402I4 US 20197480 A US20197480 A US 20197480A US T101402 I4 UST101402 I4 US T101402I4
Authority
US
United States
Prior art keywords
ptfe
paste extrusion
mixture
weight
extrusion
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.)
Pending
Application number
US06/201,974
Inventor
Jeffrey R. Pateman
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.)
Imperial Chemical Industries Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to IMPERIAL CHEMICAL INDUSTRIES, LIMITED, A CORP. OF GREAT BRITAIN reassignment IMPERIAL CHEMICAL INDUSTRIES, LIMITED, A CORP. OF GREAT BRITAIN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PATEMAN JEFFREY R.
Application granted granted Critical
Publication of UST101402I4 publication Critical patent/UST101402I4/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/18—Spheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms

Landscapes

  • Chemical & Material Sciences (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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Lubricants (AREA)

Abstract

Pipes with walls thicker than 4 mm are made by paste extrusion of PTFE powder in the presence of a lubricant. The extrusion is carried out at a reduction ratio below 20:1. The PTFE powder is a mixture of 80 to 99% by weight of coagulated dispersion grade PTFE and 20 to 1% by weight of PTFE having a median particle size less than 50 micrometers. The mixture is preferably a co-coagulation of the two forms of PTFE.
US06/201,974 1979-11-19 1980-10-29 Process of paste extrusion Pending UST101402I4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7939952A GB2065142A (en) 1979-11-19 1979-11-19 PTFE for paste extrusion
GB7939952/79 1979-11-19

Publications (1)

Publication Number Publication Date
UST101402I4 true UST101402I4 (en) 1982-01-05

Family

ID=10509294

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/201,974 Pending UST101402I4 (en) 1979-11-19 1980-10-29 Process of paste extrusion

Country Status (2)

Country Link
US (1) UST101402I4 (en)
GB (1) GB2065142A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD746148S1 (en) * 2014-07-14 2015-12-29 Berlin Packaging, Llc Bottle
CN104672728B (en) * 2015-03-16 2017-05-24 深圳市格瑞斯特环保技术有限公司 Silicon pump pipe and manufacturing method thereof
TWD177367S (en) * 2015-11-24 2016-08-01 Yuen Foong Yu Consumer Products Co Ltd Portion of container
TWD177368S (en) * 2015-11-24 2016-08-01 Yuen Foong Yu Consumer Products Co Ltd Portion of container

Also Published As

Publication number Publication date
GB2065142A (en) 1981-06-24

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