GB571814A - Process for the preparation of polymerised hydrocarbons in powder form - Google Patents

Process for the preparation of polymerised hydrocarbons in powder form

Info

Publication number
GB571814A
GB571814A GB352442A GB352442A GB571814A GB 571814 A GB571814 A GB 571814A GB 352442 A GB352442 A GB 352442A GB 352442 A GB352442 A GB 352442A GB 571814 A GB571814 A GB 571814A
Authority
GB
United Kingdom
Prior art keywords
powder
solvent
elevated temperature
cooling
powder form
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
GB352442A
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.)
HAROLD FREDERIC WILSON
Telegraph Construction and Maintenance Co Ltd
Original Assignee
HAROLD FREDERIC WILSON
Telegraph Construction and Maintenance Co 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
Priority to BE472953D priority Critical patent/BE472953A/xx
Application filed by HAROLD FREDERIC WILSON, Telegraph Construction and Maintenance Co Ltd filed Critical HAROLD FREDERIC WILSON
Priority to GB352442A priority patent/GB571814A/en
Publication of GB571814A publication Critical patent/GB571814A/en
Priority to FR945962D priority patent/FR945962A/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
    • C08J3/14—Powdering or granulating by precipitation from solutions
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Polyethylene is prepared in powder form by dissolving it, at elevated temperature, in a solvent, e.g. a hydrocarbon or chlorinated hydrocarbon, in which it is soluble to a considerable extent at such elevated temperature, but substantially insoluble at lower temperatures, and then cooling to solution to such lower temperature. Solution is preferably effected near the boiling point of the solvent and cooling effected rapidly by applied cooling means. The precipitated powder is separated, e.g. by filtering and dried at elevated temperature insufficient to cause softening. A fine powder is obtained by tumbling the separated powder in a machine provided with an exhaust for the liquid vapour, heat being applied, if desired. An example, using petroleum spirit as solvent, is given. The powder may be used for moulding in presses or injection machines, or, in a spray pistol, to produce films. Specification 491,804 is referred to.
GB352442A 1942-03-17 1942-03-17 Process for the preparation of polymerised hydrocarbons in powder form Expired GB571814A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE472953D BE472953A (en) 1942-03-17
GB352442A GB571814A (en) 1942-03-17 1942-03-17 Process for the preparation of polymerised hydrocarbons in powder form
FR945962D FR945962A (en) 1942-03-17 1947-04-29 Process for preparing powdered polyethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB352442A GB571814A (en) 1942-03-17 1942-03-17 Process for the preparation of polymerised hydrocarbons in powder form

Publications (1)

Publication Number Publication Date
GB571814A true GB571814A (en) 1945-09-11

Family

ID=9759940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB352442A Expired GB571814A (en) 1942-03-17 1942-03-17 Process for the preparation of polymerised hydrocarbons in powder form

Country Status (3)

Country Link
BE (1) BE472953A (en)
FR (1) FR945962A (en)
GB (1) GB571814A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589417A (en) * 1949-03-22 1952-03-18 Henry Jenett Apparatus for heating and mixing plastic compositions
US2977351A (en) * 1956-06-28 1961-03-28 Phillips Petroleum Co Process for recovery of polyolefin by precipitation in water
US3008946A (en) * 1956-05-25 1961-11-14 Nu Plastics Inc Production of polyethylene powder
US3050514A (en) * 1956-07-16 1962-08-21 Allied Chem Process and product of polymerizing ethylenic hydrocarbons
US3245934A (en) * 1960-12-19 1966-04-12 Pennsalt Chemicals Corp Production of finely divided polyolefin from preformed polymeric gel
DE1217589B (en) * 1960-09-13 1966-05-26 Furukawa Chemical Ind Company Process for pulverizing solid polymers
DE1273790B (en) * 1961-03-21 1968-07-25 Goldschmidt Ag Th Process for the production of a powder from coarse chlorinated polyether based on pentaerythritol
US4250227A (en) * 1977-04-06 1981-02-10 Compagnie Francaise De Raffinage Micron size polymeric coating and related methods
US4382127A (en) 1980-09-09 1983-05-03 Compagnie Francaise De Raffinage Process for the preparation of suspensions of polymers; suspensions of said polymers; and uses of said suspensions
EP0849312A1 (en) * 1996-12-19 1998-06-24 Paraffinwerk Webau GmbH Process for recovering polyolefins from polymer compositions or from waste materials

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883646C (en) * 1951-01-28 1953-07-20 Basf Ag Process for the production of a polyethylene powder suitable for coating purposes
DE976400C (en) * 1952-11-29 1963-08-01 Wilhelm Dr-Ing Wehr Process for the production of foils, panels, other molded articles and coverings from polyethylene
DE1100949B (en) * 1955-12-21 1961-03-02 Bayer Ag Process for the production of powdery polycarbonates

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589417A (en) * 1949-03-22 1952-03-18 Henry Jenett Apparatus for heating and mixing plastic compositions
US3008946A (en) * 1956-05-25 1961-11-14 Nu Plastics Inc Production of polyethylene powder
US2977351A (en) * 1956-06-28 1961-03-28 Phillips Petroleum Co Process for recovery of polyolefin by precipitation in water
US3050514A (en) * 1956-07-16 1962-08-21 Allied Chem Process and product of polymerizing ethylenic hydrocarbons
DE1217589B (en) * 1960-09-13 1966-05-26 Furukawa Chemical Ind Company Process for pulverizing solid polymers
US3245934A (en) * 1960-12-19 1966-04-12 Pennsalt Chemicals Corp Production of finely divided polyolefin from preformed polymeric gel
DE1273790B (en) * 1961-03-21 1968-07-25 Goldschmidt Ag Th Process for the production of a powder from coarse chlorinated polyether based on pentaerythritol
US4250227A (en) * 1977-04-06 1981-02-10 Compagnie Francaise De Raffinage Micron size polymeric coating and related methods
US4382127A (en) 1980-09-09 1983-05-03 Compagnie Francaise De Raffinage Process for the preparation of suspensions of polymers; suspensions of said polymers; and uses of said suspensions
EP0849312A1 (en) * 1996-12-19 1998-06-24 Paraffinwerk Webau GmbH Process for recovering polyolefins from polymer compositions or from waste materials

Also Published As

Publication number Publication date
BE472953A (en)
FR945962A (en) 1949-05-19

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