GB638328A - Moulding powders comprising fluorine-containing polymers - Google Patents

Moulding powders comprising fluorine-containing polymers

Info

Publication number
GB638328A
GB638328A GB32313/47A GB3231347A GB638328A GB 638328 A GB638328 A GB 638328A GB 32313/47 A GB32313/47 A GB 32313/47A GB 3231347 A GB3231347 A GB 3231347A GB 638328 A GB638328 A GB 638328A
Authority
GB
United Kingdom
Prior art keywords
liquid
fluorine
polymer
containing polymers
moulding powders
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
GB32313/47A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB638328A publication Critical patent/GB638328A/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Grainy, non-fibrous moulding powders are made by mixing a coarse, granular polymer or copolymer of tetrafluoroethylene with a liquid, vigorously agitating the mixture, preferably in an internally, vertically-finned vessel by means of a T-stirrer rotating on a vertical axis, until the grains of the polymer are reduced in size, then separating the polymer from the liquid and drying. The liquid may be water, ethanol or mixtures thereof. Specifications 572,265, 574,688 and 625,348 are referred to.
GB32313/47A 1946-12-07 1947-12-08 Moulding powders comprising fluorine-containing polymers Expired GB638328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638328XA 1946-12-07 1946-12-07

Publications (1)

Publication Number Publication Date
GB638328A true GB638328A (en) 1950-06-07

Family

ID=22051817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32313/47A Expired GB638328A (en) 1946-12-07 1947-12-08 Moulding powders comprising fluorine-containing polymers

Country Status (1)

Country Link
GB (1) GB638328A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106486B (en) * 1956-11-15 1961-05-10 Du Pont Polytetrafluoroethylene powder, especially for shaping into flat structures such as foils, and processes for its production
DE1149689B (en) * 1956-05-22 1963-06-06 Commissariat Energie Atomique Process for the production of a porous membrane carried by a metal fabric
DE1210765B (en) * 1956-05-22 1966-02-17 Commissariat Energie Atomique Use of a paste to produce a porous membrane for gas separation carried by a metal mesh
US3331825A (en) * 1963-11-05 1967-07-18 Thiokol Chemical Corp Polytetrafluoroethylene molding powders
DE1292835B (en) * 1956-11-15 1969-04-17 Du Pont Method for producing a fine powder from polytetrafluoroethylene
DE2338285A1 (en) * 1972-07-29 1974-02-14 Daikin Ind Ltd GRAINY POLYTETRAFLUORAETHYLENE POWDER
US4966331A (en) * 1986-12-11 1990-10-30 Basf Aktiengesellschaft Stirred ball mill for grinding pigments

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149689B (en) * 1956-05-22 1963-06-06 Commissariat Energie Atomique Process for the production of a porous membrane carried by a metal fabric
DE1210765B (en) * 1956-05-22 1966-02-17 Commissariat Energie Atomique Use of a paste to produce a porous membrane for gas separation carried by a metal mesh
DE1106486B (en) * 1956-11-15 1961-05-10 Du Pont Polytetrafluoroethylene powder, especially for shaping into flat structures such as foils, and processes for its production
DE1292835B (en) * 1956-11-15 1969-04-17 Du Pont Method for producing a fine powder from polytetrafluoroethylene
US3331825A (en) * 1963-11-05 1967-07-18 Thiokol Chemical Corp Polytetrafluoroethylene molding powders
DE2338285A1 (en) * 1972-07-29 1974-02-14 Daikin Ind Ltd GRAINY POLYTETRAFLUORAETHYLENE POWDER
US4966331A (en) * 1986-12-11 1990-10-30 Basf Aktiengesellschaft Stirred ball mill for grinding pigments

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