GB767639A - Refining of polyethylene - Google Patents

Refining of polyethylene

Info

Publication number
GB767639A
GB767639A GB2040/55A GB204055A GB767639A GB 767639 A GB767639 A GB 767639A GB 2040/55 A GB2040/55 A GB 2040/55A GB 204055 A GB204055 A GB 204055A GB 767639 A GB767639 A GB 767639A
Authority
GB
United Kingdom
Prior art keywords
lbs
minutes
mixing
pressure
inch
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
GB2040/55A
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.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical 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 Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Publication of GB767639A publication Critical patent/GB767639A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene
    • 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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Crude polyethylene is refined to give uniform products by subjecting it to intensive mixing in an enclosed chamber under pressure. Mixing is effected by a plurality of rotating members which rotate at different peripheral speeds, initially for a period of not more than two minutes with the fastest member revolving at a peripheral speed of 200-285 feet per minute and under 20-30 lbs./sq. inch pressure and finally for such a period that the entire time of treatment is not less than five minutes with the fastest member rotating as above at a pressure of not more than 5 lbs./sq. inch, the walls of the chamber being cooled to 35-38 DEG F., throughout the mixing. In a modification for the production of moulding powder two additional steps carried out at lower speed are interposed between the initial and final mixing. The initial step, as before, is followed by a second step using a peripheral speed of 100-150 feet per minute and not more than 5 lbs. per sq. inch pressure for 2-4 minutes, and a third step using a speed of 100-150 feet per minute and 20-30 lbs. per sq. inch pressure, and the final mixing as above, the entire time being not less than 6 minutes. The process may be carried out in a Banbury-type mixer. The product may be used in injection moulding, extrusion and flame spraying. U.S.A. Specification 2,153,553 is referred to.
GB2040/55A 1954-01-22 1955-01-24 Refining of polyethylene Expired GB767639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US767639XA 1954-01-22 1954-01-22

Publications (1)

Publication Number Publication Date
GB767639A true GB767639A (en) 1957-02-06

Family

ID=22134037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2040/55A Expired GB767639A (en) 1954-01-22 1955-01-24 Refining of polyethylene

Country Status (1)

Country Link
GB (1) GB767639A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451593A (en) * 1981-03-31 1984-05-29 Union Carbide Corporation Process for finishing resin using reduced energy input

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451593A (en) * 1981-03-31 1984-05-29 Union Carbide Corporation Process for finishing resin using reduced energy input

Similar Documents

Publication Publication Date Title
GB767639A (en) Refining of polyethylene
GB918647A (en) Process and apparatus for the manufacture of agglomerated bodies from mineral fibres, particularly glass fibres
GB944214A (en) Process for the manufacture of foamed structures from plasticized polyvinyl chloridecompositions
ES396734A1 (en) Process and apparatus for producing shaped plastics products
JPS5689920A (en) Production of double-gear train
CA597262A (en) Process for treating organic film-forming substances to modify the properties of products to be produced therefrom
ZA726142B (en) Polymer latices constituted by polyisoprene of high cis-1,4-content and process for obtaining same
GB812657A (en) Manufacture of fibres from thermoplastic materials
GB902169A (en) Process and apparatus for the continuous production of a completely melted or partially melted and expanded product
AU464712B2 (en) Method of producing moulded plastics rubber composites
JPS5517511A (en) Production method and device of highly elastic polyurethane foamed product
FR2053886A5 (en) Tubular plastic preforms
AU465105B2 (en) process AND MACHINERY FOR PRODUCING ARTICLES COMPOSED OF FIBRES AGGLOMERATED BY SYNTHETIC RUBBER
GB674217A (en) Manufacture of butter
GB872396A (en) A continuous process for the production of "beer"
BE744406R (en) PROCESS FOR THE PRODUCTION OF AROMATIC PRODUCTS WITH VINYL SUBSTITUTION FROM AROMATIC PRODUCTS SUBSTITUTED BY ONE OR MORE METHYL GROUPS AND NEW PRODUCTS AS WELL
BE592687A (en) Process for producing oxytetracycline and product obtained.
CA563831A (en) Process for the production of shaped articles from rubbery polymers containing reactive groups
AU208491B2 (en) Improvements in or relating to process of treating insulin andthe resulting product
GB171432A (en) Process for the production of moulded articles from cellulose acetate and the like cellulose derivatives
GB1194192A (en) Method and Apparatus for Moulding Articles.
GB989266A (en) Improvements in or relating to the manufacture of rubber articles
AU220566B2 (en) Process for treating shaped polymeric articles to improve dyeability
AU4966169A (en) Process and apparatus forthe production of moulded articles
DE1104168B (en) Method and device for producing large-area and thick-walled hollow bodies from thermoplastic plastic, after which this plastic is deposited on the wall of a molding tool