BE696619A - - Google Patents
Info
- Publication number
- BE696619A BE696619A BE696619DA BE696619A BE 696619 A BE696619 A BE 696619A BE 696619D A BE696619D A BE 696619DA BE 696619 A BE696619 A BE 696619A
- Authority
- BE
- Belgium
- Prior art keywords
- molecular weight
- polyisobutylene
- screw
- high molecular
- temperature
- Prior art date
Links
- 229920002367 Polyisobutene Polymers 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 18
- 239000012760 heat stabilizer Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 description 7
- 238000006731 degradation reaction Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- -1 polyisobutylene Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- LNMBCRKRCIMQLW-UHFFFAOYSA-N 2-tert-butylsulfanyl-2-methylpropane Chemical compound CC(C)(C)SC(C)(C)C LNMBCRKRCIMQLW-UHFFFAOYSA-N 0.000 description 1
- MIHQWNKDHBLQEZ-UHFFFAOYSA-N 3-tert-butyl-2-methylphenol Chemical compound CC1=C(O)C=CC=C1C(C)(C)C MIHQWNKDHBLQEZ-UHFFFAOYSA-N 0.000 description 1
- KBTSYYDIJLKASV-UHFFFAOYSA-N 5,6-ditert-butyl-7-thiabicyclo[4.1.0]hepta-2,4-dien-1-ol Chemical compound C(C)(C)(C)C=1C2(C(C=CC=1)(O)S2)C(C)(C)C KBTSYYDIJLKASV-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001896 cresols Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000005673 monoalkenes Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
-
- 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)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0086551 | 1966-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE696619A true BE696619A (is") | 1967-10-05 |
Family
ID=6983414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE696619D BE696619A (is") | 1966-04-06 | 1967-04-05 |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE696619A (is") |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2317070A1 (fr) * | 1975-07-07 | 1977-02-04 | Shell Int Research | Procede et appareil pour reduire la longueur de la chaine moleculaire de polymeres par degradation par cisaillement |
| EP0035677A1 (de) * | 1980-03-05 | 1981-09-16 | BASF Aktiengesellschaft | Verhinderung der Russbildung beim gezielten Abbau von hochmolekularen Polyisobutylenen |
-
1967
- 1967-04-05 BE BE696619D patent/BE696619A/fr unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2317070A1 (fr) * | 1975-07-07 | 1977-02-04 | Shell Int Research | Procede et appareil pour reduire la longueur de la chaine moleculaire de polymeres par degradation par cisaillement |
| EP0035677A1 (de) * | 1980-03-05 | 1981-09-16 | BASF Aktiengesellschaft | Verhinderung der Russbildung beim gezielten Abbau von hochmolekularen Polyisobutylenen |
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