FR1299850A - Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates - Google Patents

Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates

Info

Publication number
FR1299850A
FR1299850A FR870545A FR870545A FR1299850A FR 1299850 A FR1299850 A FR 1299850A FR 870545 A FR870545 A FR 870545A FR 870545 A FR870545 A FR 870545A FR 1299850 A FR1299850 A FR 1299850A
Authority
FR
France
Prior art keywords
improved process
making solid
polycarbonate solutions
polycarbonates
solid polycarbonates
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
FR870545A
Other languages
English (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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass 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
Priority claimed from FR835527A external-priority patent/FR1272132A/fr
Priority claimed from US48733A external-priority patent/US3022271A/en
Priority claimed from US128465A external-priority patent/US3195178A/en
Application filed by Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Priority to FR870545A priority Critical patent/FR1299850A/fr
Application granted granted Critical
Publication of FR1299850A publication Critical patent/FR1299850A/fr
Priority claimed from US409914A external-priority patent/US3235640A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • 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
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • B29C48/505—Screws
    • B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C08G64/205—General preparatory processes characterised by the apparatus used
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
FR870545A 1960-08-10 1961-08-10 Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates Expired FR1299850A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR870545A FR1299850A (fr) 1960-08-10 1961-08-10 Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
FR835527A FR1272132A (fr) 1960-08-10 1960-08-10 Procédé et machines de traitement de matières plastiques
US48733A US3022271A (en) 1960-08-10 1960-08-10 Finishing of solid diphenolic polycarbonates
US12664561A 1961-08-01 1961-08-01
US128465A US3195178A (en) 1960-08-10 1961-08-01 Apparatus for the treatment of plastic materials
FR870545A FR1299850A (fr) 1960-08-10 1961-08-10 Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates
US409914A US3235640A (en) 1960-08-10 1964-11-09 Method for the deaeration of plastic materials

Publications (1)

Publication Number Publication Date
FR1299850A true FR1299850A (fr) 1962-07-27

Family

ID=27546156

Family Applications (1)

Application Number Title Priority Date Filing Date
FR870545A Expired FR1299850A (fr) 1960-08-10 1961-08-10 Procédé perfectionné pour fabriquer des polycarbonates solides à partir de solutions de polycarbonates

Country Status (1)

Country Link
FR (1) FR1299850A (fr)

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