FR2317070A1 - Procede et appareil pour reduire la longueur de la chaine moleculaire de polymeres par degradation par cisaillement - Google Patents
Procede et appareil pour reduire la longueur de la chaine moleculaire de polymeres par degradation par cisaillementInfo
- 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
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)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
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 (fr) | 1977-02-04 |
FR2317070B1 FR2317070B1 (de) | 1978-09-01 |
Family
ID=10276819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7620450A Granted FR2317070A1 (fr) | 1975-07-07 | 1976-07-05 | Procede et appareil pour reduire la longueur de la chaine moleculaire de polymeres par degradation par cisaillement |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS529096A (de) |
DE (1) | DE2630173A1 (de) |
FR (1) | FR2317070A1 (de) |
GB (1) | GB1518815A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0244591A2 (de) * | 1986-05-09 | 1987-11-11 | HERMANN BERSTORFF Maschinenbau GmbH | Strangpressvorrichtung zum Herstellen von Kunststoffschmelzemischungen |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT410075B (de) * | 2000-12-11 | 2003-01-27 | Cincinnati Extrusion Gmbh | Verfahren zum zuführen eines schmelzestromes zu einer formgebungsstufe und vorrichtung zum durchführen dieses verfahrens |
RU2367570C2 (ru) * | 2004-10-11 | 2009-09-20 | Ленксесс Инк. | Способ непрерывной экструзии для производства привитых полимеров |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE696619A (de) * | 1966-04-06 | 1967-10-05 |
-
1975
- 1975-07-07 GB GB28512/75A patent/GB1518815A/en not_active Expired
-
1976
- 1976-07-05 FR FR7620450A patent/FR2317070A1/fr active Granted
- 1976-07-05 JP JP51079082A patent/JPS529096A/ja active Pending
- 1976-07-05 DE DE19762630173 patent/DE2630173A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE696619A (de) * | 1966-04-06 | 1967-10-05 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0244591A2 (de) * | 1986-05-09 | 1987-11-11 | HERMANN BERSTORFF Maschinenbau GmbH | Strangpressvorrichtung zum Herstellen von Kunststoffschmelzemischungen |
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 |
---|---|
JPS529096A (en) | 1977-01-24 |
GB1518815A (en) | 1978-07-26 |
FR2317070B1 (de) | 1978-09-01 |
DE2630173A1 (de) | 1977-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |