FR2369081A1 - Procede pour preparer par broyage des poudres de caoutchouc a faible charge - Google Patents
Procede pour preparer par broyage des poudres de caoutchouc a faible chargeInfo
- Publication number
- FR2369081A1 FR2369081A1 FR7732286A FR7732286A FR2369081A1 FR 2369081 A1 FR2369081 A1 FR 2369081A1 FR 7732286 A FR7732286 A FR 7732286A FR 7732286 A FR7732286 A FR 7732286A FR 2369081 A1 FR2369081 A1 FR 2369081A1
- Authority
- FR
- France
- Prior art keywords
- rubber
- particles
- grinding
- powdering agent
- powder
- 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
- C08J3/124—Treatment for improving the free-flowing characteristics
-
- 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
- B29K2021/00—Use of unspecified rubbers 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
- C08J2321/00—Characterised by the use of unspecified rubbers
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)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
On transforme le caoutchouc par broyage mécanique préliminaire en particules à grande surface et à grande porosité; on pulvérise la totalité de l'agent de poudrage dans un courant de transport pneumatique des particules de caoutchouc de façon que la poudre soit presque totalement absorbée par les particules de caoutchouc et que l'agent de poudrage environnant soit soumis à l'opération de broyage avec une distribution pratiquement uniforme entre les particules de caoutchouc en poudre; on broie les particules de caoutchouc à basse température de façon que le caoutchouc ne subisse pas de déformation et que la structure à grande surface riche en creux des particules de caoutchouc formées par broyage demeure intacte; on laisse l'agent de poudrage non adsorbé ou fraîchement introduit être adsorbé par la poudre de caoutchouc dans une zone de transport pneumatique suivant la zone de broyage; et on refroidit la poudre de caoutchouc obtenue de telle sorte qu'il n'y ait pas de déformation à chaud du caoutchouc. L'invention s'applique en particulier à la préparation de caoutchouc en particules mesurant 200 à 1500 mu m et ayant une teneur en agent de poudrage inférieure à 7 % en poids.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2648301A DE2648301C2 (de) | 1976-10-26 | 1976-10-26 | Verfahren zur Herstellung von bepudertem Kautschukpulver |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2369081A1 true FR2369081A1 (fr) | 1978-05-26 |
FR2369081B1 FR2369081B1 (fr) | 1982-07-16 |
Family
ID=5991353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7732286A Granted FR2369081A1 (fr) | 1976-10-26 | 1977-10-26 | Procede pour preparer par broyage des poudres de caoutchouc a faible charge |
Country Status (6)
Country | Link |
---|---|
US (1) | US4157790A (fr) |
JP (1) | JPS5354245A (fr) |
DE (1) | DE2648301C2 (fr) |
FR (1) | FR2369081A1 (fr) |
GB (1) | GB1595103A (fr) |
IT (1) | IT1091325B (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3031508C2 (de) * | 1980-08-21 | 1983-05-05 | Chemische Werke Hüls AG, 4370 Marl | Verfahren zur Herstellung von lagerstabilen, Trennmittel enthaltenden Ethylen-α -Olefin-(Dien)-Kautschuk-Pulvern |
EP0047374A1 (fr) * | 1980-08-21 | 1982-03-17 | Hüls Aktiengesellschaft | Procédé pour préparer une poudre en élastomère éthylène-alphaoléfine-(diène) stable au stockage contenant des agents anti-agglomérants |
DE3321663C2 (de) * | 1982-06-17 | 1995-02-02 | Troy Chemical Corp | Verfahren zur Herstellung von feinteiligen pulverförmigen carboxylierten Polyalkylenen und Verwendung derselben als thixotropisches Hilfsmittel in flüssigen Feststoffdispersionen |
US4650126A (en) * | 1984-12-26 | 1987-03-17 | E. I. Du Pont De Nemours And Company | Process for ambient temperature grinding of soft polymers |
JPS61228024A (ja) * | 1985-04-01 | 1986-10-11 | Bridgestone Corp | 粒状ゴムの製造方法 |
US6112777A (en) * | 1998-11-19 | 2000-09-05 | Union Carbide Chemicals & Plastics Technology Corporation | Process for bulk handling elastomeric materials via temperature control |
AU2002219885A1 (en) | 2000-11-28 | 2002-06-11 | Conoco Inc. | Drag-reducing polymer suspensions |
US6399676B1 (en) | 2000-11-28 | 2002-06-04 | Conoco, Inc. | Drag-reducing polymer suspensions |
US6576732B1 (en) | 2000-11-28 | 2003-06-10 | Conocophillips Co. | Drag-reducing polymers and drag-reducing polymer suspensions and solutions |
ES2337032T3 (es) * | 2001-12-04 | 2010-04-20 | Bridgestone Corporation | Procedimiento de tratamiento del caucho en polvo para hacer su superficie irregular. |
US20040112996A1 (en) * | 2002-09-03 | 2004-06-17 | Mobius Technologies, Incorporated | Process for pulverization of polyurethane-containing materials |
WO2004050320A1 (fr) * | 2002-12-02 | 2004-06-17 | Pirelli & C. S.P.A. | Procede de pulverisation par extrusion d'un materiau de caoutchouc vulcanise |
JP6706798B2 (ja) * | 2014-08-29 | 2020-06-10 | 国立大学法人山形大学 | エラストマー粒子及びその製造方法、エラストマー組成物、エラストマー粒子分散液並びに成形体 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH258069A (de) * | 1945-03-08 | 1948-11-15 | Firestone Tire & Rubber Co | Verfahren und Einrichtung zur Bearbeitung kautschukartiger Materialien. |
FR1371083A (fr) * | 1962-11-07 | 1964-08-28 | Texas Us Chem Co | Granulés de matières caoutchouteuses traités pour en réduire l'agglomération |
FR1465715A (fr) * | 1965-12-03 | 1967-01-13 | Raffinage Cie Francaise | Compositions de caoutchoucs qui, sous forme divisée, ne se réagglomèrent pas durant le stockage |
GB1079976A (en) * | 1964-02-04 | 1967-08-16 | Polymer Corp | Coating of rubber particles |
DE2232254A1 (de) * | 1972-06-30 | 1974-01-24 | Horst Mueller | Verfahren zur herstellung von granulaten auf basis von budatienstyrolcopolymerisaten und polystyrol |
FR2215308A1 (fr) * | 1973-01-29 | 1974-08-23 | Bp Chem Int Ltd | |
FR2271033A1 (fr) * | 1974-05-18 | 1975-12-12 | Bayer Ag | |
FR2316064A1 (fr) * | 1975-07-03 | 1977-01-28 | Bayer Ag | Procede d'obtention d'un melange de caoutchouc capable de s'ecouler, et appareillage correspondant |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2853742A (en) * | 1954-04-22 | 1958-09-30 | Dasher Rubber & Chemical Compa | Process for reducing scrap vulcanized rubber to finely divided particles |
US2895939A (en) * | 1957-03-18 | 1959-07-21 | Dow Chemical Co | Method for coating rubber in granular form with impalpable resinous vinyl aromatic polymer dusts |
US3190565A (en) * | 1962-08-24 | 1965-06-22 | Union Carbide Corp | Process for grinding rubber |
DE1642998B2 (de) * | 1967-03-23 | 1973-05-17 | Verfahren zur verhinderung der agglomeration feinteiliger, 1ulverfoermiger stoffe | |
US3648937A (en) * | 1969-08-08 | 1972-03-14 | Ercon Inc | Method of making small plastic particles |
-
1976
- 1976-10-26 DE DE2648301A patent/DE2648301C2/de not_active Expired
-
1977
- 1977-10-21 US US05/844,261 patent/US4157790A/en not_active Expired - Lifetime
- 1977-10-24 IT IT51527/77A patent/IT1091325B/it active
- 1977-10-24 GB GB44142/77A patent/GB1595103A/en not_active Expired
- 1977-10-24 JP JP12687677A patent/JPS5354245A/ja active Granted
- 1977-10-26 FR FR7732286A patent/FR2369081A1/fr active Granted
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH258069A (de) * | 1945-03-08 | 1948-11-15 | Firestone Tire & Rubber Co | Verfahren und Einrichtung zur Bearbeitung kautschukartiger Materialien. |
FR1371083A (fr) * | 1962-11-07 | 1964-08-28 | Texas Us Chem Co | Granulés de matières caoutchouteuses traités pour en réduire l'agglomération |
GB1079976A (en) * | 1964-02-04 | 1967-08-16 | Polymer Corp | Coating of rubber particles |
FR1465715A (fr) * | 1965-12-03 | 1967-01-13 | Raffinage Cie Francaise | Compositions de caoutchoucs qui, sous forme divisée, ne se réagglomèrent pas durant le stockage |
DE2232254A1 (de) * | 1972-06-30 | 1974-01-24 | Horst Mueller | Verfahren zur herstellung von granulaten auf basis von budatienstyrolcopolymerisaten und polystyrol |
FR2215308A1 (fr) * | 1973-01-29 | 1974-08-23 | Bp Chem Int Ltd | |
FR2271033A1 (fr) * | 1974-05-18 | 1975-12-12 | Bayer Ag | |
FR2316064A1 (fr) * | 1975-07-03 | 1977-01-28 | Bayer Ag | Procede d'obtention d'un melange de caoutchouc capable de s'ecouler, et appareillage correspondant |
Also Published As
Publication number | Publication date |
---|---|
JPS619973B2 (fr) | 1986-03-27 |
IT1091325B (it) | 1985-07-06 |
JPS5354245A (en) | 1978-05-17 |
US4157790A (en) | 1979-06-12 |
DE2648301C2 (de) | 1983-01-13 |
GB1595103A (en) | 1981-08-05 |
DE2648301A1 (de) | 1978-04-27 |
FR2369081B1 (fr) | 1982-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |