FR2317070A1 - PROCESS AND APPARATUS FOR REDUCING THE LENGTH OF THE MOLECULAR CHAIN OF POLYMERS BY DEGRADATION BY SHEAR - Google Patents

PROCESS AND APPARATUS FOR REDUCING THE LENGTH OF THE MOLECULAR CHAIN OF POLYMERS BY DEGRADATION BY SHEAR

Info

Publication number
FR2317070A1
FR2317070A1 FR7620450A FR7620450A FR2317070A1 FR 2317070 A1 FR2317070 A1 FR 2317070A1 FR 7620450 A FR7620450 A FR 7620450A FR 7620450 A FR7620450 A FR 7620450A FR 2317070 A1 FR2317070 A1 FR 2317070A1
Authority
FR
France
Prior art keywords
shear
degradation
polymers
reducing
length
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.)
Granted
Application number
FR7620450A
Other languages
French (fr)
Other versions
FR2317070B1 (en
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of FR2317070A1 publication Critical patent/FR2317070A1/en
Application granted granted Critical
Publication of FR2317070B1 publication Critical patent/FR2317070B1/fr
Granted 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/74—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
FR7620450A 1975-07-07 1976-07-05 PROCESS AND APPARATUS FOR REDUCING THE LENGTH OF THE MOLECULAR CHAIN OF POLYMERS BY DEGRADATION BY SHEAR Granted FR2317070A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28512/75A GB1518815A (en) 1975-07-07 1975-07-07 Reducing the molecular chain length of polymers by shear degradation

Publications (2)

Publication Number Publication Date
FR2317070A1 true FR2317070A1 (en) 1977-02-04
FR2317070B1 FR2317070B1 (en) 1978-09-01

Family

ID=10276819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620450A Granted FR2317070A1 (en) 1975-07-07 1976-07-05 PROCESS AND APPARATUS FOR REDUCING THE LENGTH OF THE MOLECULAR CHAIN OF POLYMERS BY DEGRADATION BY SHEAR

Country Status (4)

Country Link
JP (1) JPS529096A (en)
DE (1) DE2630173A1 (en)
FR (1) FR2317070A1 (en)
GB (1) GB1518815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244591A2 (en) * 1986-05-09 1987-11-11 HERMANN BERSTORFF Maschinenbau GmbH Extrusion apparatus for the production of mixed molten plastics

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410075B (en) * 2000-12-11 2003-01-27 Cincinnati Extrusion Gmbh Melt supply to a mould, comprises deflecting a melt stream from its flow direction, and simultaneously reducing its cross section area
RU2367570C2 (en) * 2004-10-11 2009-09-20 Ленксесс Инк. Method of continuous extrusion to produce graft polymers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE696619A (en) * 1966-04-06 1967-10-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE696619A (en) * 1966-04-06 1967-10-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244591A2 (en) * 1986-05-09 1987-11-11 HERMANN BERSTORFF Maschinenbau GmbH Extrusion apparatus for the production of mixed molten plastics
EP0244591A3 (en) * 1986-05-09 1989-06-07 Hermann Berstorff Maschinenbau Gmbh Extrusion apparatus for the production of mixed molten plastics

Also Published As

Publication number Publication date
FR2317070B1 (en) 1978-09-01
GB1518815A (en) 1978-07-26
JPS529096A (en) 1977-01-24
DE2630173A1 (en) 1977-01-27

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Legal Events

Date Code Title Description
ST Notification of lapse