GB888716A - Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers - Google Patents

Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers

Info

Publication number
GB888716A
GB888716A GB3190859A GB3190859A GB888716A GB 888716 A GB888716 A GB 888716A GB 3190859 A GB3190859 A GB 3190859A GB 3190859 A GB3190859 A GB 3190859A GB 888716 A GB888716 A GB 888716A
Authority
GB
United Kingdom
Prior art keywords
devolatilizing
alkenyl aromatic
aromatic polymers
polymeric materials
heating
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
GB3190859A
Inventor
Wilson Westle Hunt
James Lawrence Amos
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.)
Dow Chemical Co
Original Assignee
Dow 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
Priority claimed from US633315A external-priority patent/US2914120A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB3190859A priority Critical patent/GB888716A/en
Publication of GB888716A publication Critical patent/GB888716A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/06—Evaporators with vertical tubes
    • B01D1/065—Evaporators with vertical tubes by film evaporating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06—Flash distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • B01D5/0066—Dome shaped condensation
    • 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
    • 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
    • C08F6/00—Post-polymerisation treatments
    • C08F6/26—Treatment of polymers prepared in bulk also solid polymers or polymer melts
    • C08F6/28—Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

<PICT:0888716/IV (a)/1> Polymeric materials, especially alkenyl aromatic polymers such as polystyrene and polyvinyl toluene, are devolatilized by heating the material to the devolatilizing temperature while contained in an enclosed space, and flowing the molten material downwardly and in the form of a continuous coating on an exposed surface such that the volatile material can escape. A suitable form of apparatus for carrying out the process is shown in Fig. 1 which consists of a polymer feed section 6, a heating section 11 and a devolatilizing chamber 13. The polymeric material is admitted through inlet 5 to be distributed to the heating tubes 8, after which it flows downwardly through the conical devolatilizing chamber 13 as a thin coating over its heated, bare metal walls 12 whence it is discharged through outlet 17, the volatile materials passing through the upright vapour conduit 14.
GB3190859A 1957-01-09 1959-09-18 Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers Expired GB888716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3190859A GB888716A (en) 1957-01-09 1959-09-18 Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US633315A US2914120A (en) 1957-01-09 1957-01-09 Devolatilizer
GB3190859A GB888716A (en) 1957-01-09 1959-09-18 Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers

Publications (1)

Publication Number Publication Date
GB888716A true GB888716A (en) 1962-02-07

Family

ID=26261128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3190859A Expired GB888716A (en) 1957-01-09 1959-09-18 Process and apparatus for devolatilizing polymeric materials, especially alkenyl aromatic polymers

Country Status (1)

Country Link
GB (1) GB888716A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400661A1 (en) * 1973-01-09 1974-07-11 Monsanto Co IMPROVED FALL FLOW EVAPORATION PROCESS
FR2341341A1 (en) * 1976-02-19 1977-09-16 Basf Ag METHOD AND DEVICE FOR THE DISPOSAL OF VAPORIZABLE COMPONENTS CONTAINED IN MOLTEN MASSES OR HIGHLY VISCOUS SOLUTIONS OF THERMOPLASTIC MATERIALS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400661A1 (en) * 1973-01-09 1974-07-11 Monsanto Co IMPROVED FALL FLOW EVAPORATION PROCESS
FR2341341A1 (en) * 1976-02-19 1977-09-16 Basf Ag METHOD AND DEVICE FOR THE DISPOSAL OF VAPORIZABLE COMPONENTS CONTAINED IN MOLTEN MASSES OR HIGHLY VISCOUS SOLUTIONS OF THERMOPLASTIC MATERIALS

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