DE2161858C3 - Verfahren zur Herstellung von ggf. mit Füllstoffen versehenen rieselfähigen Polytetrafluoräthylen-Formpulvern - Google Patents

Verfahren zur Herstellung von ggf. mit Füllstoffen versehenen rieselfähigen Polytetrafluoräthylen-Formpulvern

Info

Publication number
DE2161858C3
DE2161858C3 DE19712161858 DE2161858A DE2161858C3 DE 2161858 C3 DE2161858 C3 DE 2161858C3 DE 19712161858 DE19712161858 DE 19712161858 DE 2161858 A DE2161858 A DE 2161858A DE 2161858 C3 DE2161858 C3 DE 2161858C3
Authority
DE
Germany
Prior art keywords
powder
weight
sieve
fillers
ptfe
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
DE19712161858
Other languages
German (de)
English (en)
Other versions
DE2161858B2 (de
DE2161858A1 (de
Inventor
Howard Edmund Welwyn Hertfordshire Browning (Ver. Koenigreich)
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
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of DE2161858A1 publication Critical patent/DE2161858A1/de
Publication of DE2161858B2 publication Critical patent/DE2161858B2/de
Application granted granted Critical
Publication of DE2161858C3 publication Critical patent/DE2161858C3/de
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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/08—Making granules by agglomerating smaller particles
    • 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
    • C08J2327/12—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 fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
DE19712161858 1970-12-11 1971-12-13 Verfahren zur Herstellung von ggf. mit Füllstoffen versehenen rieselfähigen Polytetrafluoräthylen-Formpulvern Expired DE2161858C3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5901670 1970-12-11
GB3495071A GB1369980A (en) 1970-12-11 1971-07-26 Polytetrafluoroethylene moulding powders

Publications (3)

Publication Number Publication Date
DE2161858A1 DE2161858A1 (de) 1972-06-29
DE2161858B2 DE2161858B2 (de) 1980-06-04
DE2161858C3 true DE2161858C3 (de) 1981-02-12

Family

ID=26262511

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712161858 Expired DE2161858C3 (de) 1970-12-11 1971-12-13 Verfahren zur Herstellung von ggf. mit Füllstoffen versehenen rieselfähigen Polytetrafluoräthylen-Formpulvern

Country Status (6)

Country Link
JP (1) JPS5417783B1 (cg-RX-API-DMAC7.html)
DE (1) DE2161858C3 (cg-RX-API-DMAC7.html)
FR (1) FR2117685A5 (cg-RX-API-DMAC7.html)
GB (1) GB1369980A (cg-RX-API-DMAC7.html)
IT (1) IT946139B (cg-RX-API-DMAC7.html)
NL (1) NL170425C (cg-RX-API-DMAC7.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980612A (en) * 1975-04-11 1976-09-14 E. I. Du Pont De Nemours And Company Process for reducing filler loss during polytetrafluoroethylene agglomeration
US3980596A (en) * 1975-04-11 1976-09-14 E. I. Du Pont De Nemours And Co. Process for reducing filler loss
JP3774985B2 (ja) * 1997-04-24 2006-05-17 ダイキン工業株式会社 ポリテトラフルオロエチレン粒状粉末およびその製法
WO1999006475A1 (en) * 1997-08-01 1999-02-11 Daikin Industries, Ltd. Process for producing granular polytetrafluoroethylene powder
US6911489B2 (en) * 2002-06-10 2005-06-28 Asahi Glass Fluoropolymers Usa, Inc. Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby

Also Published As

Publication number Publication date
DE2161858B2 (de) 1980-06-04
NL7116978A (cg-RX-API-DMAC7.html) 1972-06-13
NL170425C (nl) 1982-11-01
IT946139B (it) 1973-05-21
DE2161858A1 (de) 1972-06-29
NL170425B (nl) 1982-06-01
FR2117685A5 (cg-RX-API-DMAC7.html) 1972-07-21
JPS5417783B1 (cg-RX-API-DMAC7.html) 1979-07-03
GB1369980A (en) 1974-10-09

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Legal Events

Date Code Title Description
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee