FR2427349A1 - Procede de preparation d'un polycarbonate granulaire - Google Patents
Procede de preparation d'un polycarbonate granulaireInfo
- Publication number
- FR2427349A1 FR2427349A1 FR7913487A FR7913487A FR2427349A1 FR 2427349 A1 FR2427349 A1 FR 2427349A1 FR 7913487 A FR7913487 A FR 7913487A FR 7913487 A FR7913487 A FR 7913487A FR 2427349 A1 FR2427349 A1 FR 2427349A1
- Authority
- FR
- France
- Prior art keywords
- polycarbonate
- powders
- preparing
- granular
- dryer
- 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
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- 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
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/185—Details relating to the spatial orientation of the reactor vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- 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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polyesters Or Polycarbonates (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
L'invention concerne un procédé en continu pour la préparation d'un polycarbonate granulaire. Selon l'invention, on amène continuellement des poudres de polycarbonate, en 1, vers un séchoir tubulaire équipé d'un agitateur mécanique, où elles sont fluidifiées par un gaz ou une vapeur inerte et chauffé envoyé à contre-courant en 5, l'agitateur se composant d'un groupe de petites barres insérées orthogonalement et en spirale le long d'un arbre coaxialement au sécheur, et tournant à une vitesse périphérique de 0,5 à 2 m/s, et la poudre de polycarbonate est maintenue sous.agitation à des températures comprises entre 165 et 190 degrés C pendant des temps de résidence d'au moins 2 minutes. L'invention s'applique notamment à l'épaississement, au séchage et à l'augmentation de l'aptitude à l'écoulement de poudres de polycarbonate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT23924/78A IT1094859B (it) | 1978-05-29 | 1978-05-29 | Processo per l'ottenimento di policarbonato granulare |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2427349A1 true FR2427349A1 (fr) | 1979-12-28 |
FR2427349B1 FR2427349B1 (fr) | 1983-01-14 |
Family
ID=11210907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7913487A Granted FR2427349A1 (fr) | 1978-05-29 | 1979-05-28 | Procede de preparation d'un polycarbonate granulaire |
Country Status (8)
Country | Link |
---|---|
US (1) | US4252968A (fr) |
JP (1) | JPS54156060A (fr) |
BE (1) | BE876577A (fr) |
DE (1) | DE2921795A1 (fr) |
FR (1) | FR2427349A1 (fr) |
GB (1) | GB2022600B (fr) |
IT (1) | IT1094859B (fr) |
NL (1) | NL7904152A (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372758A (en) * | 1980-09-02 | 1983-02-08 | Union Carbide Corporation | Degassing process for removing unpolymerized monomers from olefin polymers |
US4451593A (en) * | 1981-03-31 | 1984-05-29 | Union Carbide Corporation | Process for finishing resin using reduced energy input |
US4845193A (en) * | 1987-07-21 | 1989-07-04 | Mitsubishi Gas Chemical Co., Inc. | Process for producing polycarbonate resin molding material having low particle content with vented extruder |
DE3829293A1 (de) * | 1988-08-30 | 1990-03-15 | Bayer Ag | Verfahren zur erniedrigung der schmelzviskositaet von aromatischen polycarbonaten, aromatischen polyestercarbonaten, aromatischen und/oder araliphatischen polyestern |
US5187256A (en) * | 1990-12-03 | 1993-02-16 | The Dow Chemical Company | Uniform distribution polycarbonate pellet |
DE10014030A1 (de) * | 2000-03-22 | 2001-09-27 | Bayer Ag | Verfahren zur Verbesserung der Adhäsionsstabilität der Oberfläche von Kunststoffformteilen |
WO2011106047A1 (fr) * | 2010-02-24 | 2011-09-01 | Univation Technologies, Llc | Appareil et procédés pour la séparation de corps volatils à partir de particules |
US9126353B2 (en) * | 2010-11-03 | 2015-09-08 | Ineos Olefins & Polymers Usa | Method and apparatus for making polyolefin pellets |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3495341A (en) * | 1968-04-09 | 1970-02-17 | Allied Chem | Continuous process for surface drying polymer chips and enclosed apparatus |
US3547890A (en) * | 1967-08-23 | 1970-12-15 | Teijin Ltd | Process and apparatus for drying polyester particles |
US3661330A (en) * | 1967-08-23 | 1972-05-09 | Teijin Ltd | Apparatus for drying polyester particles |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE584333C (de) * | 1932-04-13 | 1933-09-18 | Jens Karl Ferdinand Rannje | Vorrichtung zum Mischen pulverfoermiger Trockenstoffe |
DE1057977B (de) * | 1939-06-28 | 1959-05-21 | Keller G M B H | Siebbodentrockner fuer vorwiegend nicht rieselfaehiges Gut |
DE1038885B (de) * | 1953-09-09 | 1958-09-11 | Wilhelm Lang K G | Mechanischer Umlaufmischer fuer trockene Stoffe mit vertikal angeordneter Mischerwelle |
DE2352426A1 (de) * | 1973-10-19 | 1975-04-30 | Metallgesellschaft Ag | Verfahren zur verhinderung der agglomeration und des zusammenklebens von amorphen kunststoffgranulaten |
DE2558730C3 (de) * | 1975-12-24 | 1982-04-22 | Hoechst Ag, 6000 Frankfurt | Verfahren zum Kristallisieren und Trocknen von Polyethylenterephthalat und Vorrichtung zur Durchführung des Verfahrens |
-
1978
- 1978-05-29 IT IT23924/78A patent/IT1094859B/it active
-
1979
- 1979-05-25 NL NL7904152A patent/NL7904152A/xx not_active Application Discontinuation
- 1979-05-28 BE BE0/195418A patent/BE876577A/fr not_active IP Right Cessation
- 1979-05-28 JP JP6510379A patent/JPS54156060A/ja active Granted
- 1979-05-28 FR FR7913487A patent/FR2427349A1/fr active Granted
- 1979-05-29 DE DE19792921795 patent/DE2921795A1/de active Granted
- 1979-05-29 GB GB7918582A patent/GB2022600B/en not_active Expired
- 1979-05-29 US US06/043,465 patent/US4252968A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3547890A (en) * | 1967-08-23 | 1970-12-15 | Teijin Ltd | Process and apparatus for drying polyester particles |
US3661330A (en) * | 1967-08-23 | 1972-05-09 | Teijin Ltd | Apparatus for drying polyester particles |
US3495341A (en) * | 1968-04-09 | 1970-02-17 | Allied Chem | Continuous process for surface drying polymer chips and enclosed apparatus |
Also Published As
Publication number | Publication date |
---|---|
IT1094859B (it) | 1985-08-10 |
JPS54156060A (en) | 1979-12-08 |
DE2921795A1 (de) | 1979-12-06 |
FR2427349B1 (fr) | 1983-01-14 |
DE2921795C2 (fr) | 1993-03-18 |
BE876577A (fr) | 1979-11-28 |
GB2022600A (en) | 1979-12-19 |
US4252968A (en) | 1981-02-24 |
NL7904152A (nl) | 1979-12-03 |
IT7823924A0 (it) | 1978-05-29 |
GB2022600B (en) | 1982-12-08 |
JPS6226887B2 (fr) | 1987-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
ST | Notification of lapse |