GB1347361A - Polymerisation of ethylene - Google Patents
Polymerisation of ethyleneInfo
- Publication number
- GB1347361A GB1347361A GB1965271A GB1965271A GB1347361A GB 1347361 A GB1347361 A GB 1347361A GB 1965271 A GB1965271 A GB 1965271A GB 1965271 A GB1965271 A GB 1965271A GB 1347361 A GB1347361 A GB 1347361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reactor
- ethylene
- valve
- outlet end
- polymerization
- 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
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
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
1347361 Polymerizing ethylene IMHICO AG and K H IMHAUSEN 9 June 1971 [7 Aug 1970] 19652/71 Heading C3P In a continuous process for the polymerization of ethylene in a tubular reactor at at least 300 atmospheres and at most 400‹ C. in the presence of oxygen or a free radical initiator and 0 to 20 mole per cent of a moderator, the rate of flow of the polymerization mixture is constant over the length of the reactor which is provided with a heating and cooling jacket divided into several independent segments, a plurality of selectively operated ethylene feed means and of temperature measuring zones are distributed over the length of the reactor, there is a pressure measuring zone at the up-stream end of the reactor, a first valve at the outlet end of the reactor which is adjusted in dependence upon the temperatures and pressures measured in the reactor in such a way as to restore pressure level and temperature profile in the reactor to predetermined values and which is suddenly opened in dependence upon the rate at which changes in the temperature and pressure measured in the reactor occur until a predetermined pressure is reached, the first valve being connected at its outlet end to a polymer/monomer separation system, and a second valve at the outlet end of the reactor connected to a separate polymer/ monomer separation system separate from that connected to the first valve and which second valve is automatically activated with the first valve closed when the temperatures and pressures measured in the reactor exceed predetermined maximum values or when the pressures fall below a predetermined minimum value. The ethylene may be copolymerized with vinyl esters, acrylic derivatives or alkenes. Suitable moderators are hydrocarbons, alcohols, ketones, aldehydes and chlorinated hydrocarbons. The initiator and optionally the moderator and comonomer may be fed in admixture with the ethylene, and additional pressure measuring zones may be arranged along the reactor, the cross-section of the reactor being widened at each inlet in proportion to the amount of material fed to the reactor. An example describes the polymerization of ethylene in the presence of oxygen and propane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1194970A CH536325A (en) | 1970-08-07 | 1970-08-07 | Verfahren zur Homo- und Copolymerisation von Äthylen und Polymerisationsreaktor zu dessen Durchführung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1347361A true GB1347361A (en) | 1974-02-27 |
Family
ID=4378422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1965271A Expired GB1347361A (en) | 1970-08-07 | 1971-06-09 | Polymerisation of ethylene |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE768620A (en) |
| CH (1) | CH536325A (en) |
| DE (1) | DE2128134B2 (en) |
| GB (1) | GB1347361A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016517A1 (en) * | 1993-12-13 | 1995-06-22 | Borealis Holding A/S | Process for the production of polyolefins in an autoclave reactor |
| US20100113692A1 (en) * | 2008-11-04 | 2010-05-06 | Mcguire Jr James E | Apparatus for Continuous Production of Partially Polymerized Compositions |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615563A1 (en) * | 1986-05-09 | 1987-11-12 | Basf Ag | METHOD FOR PRODUCING COPOLYMERISATES OF ETHYLENE WITH VINYL ESTERS IN A TUBE REACTOR AT PRESSURES ABOVE 500 BAR |
| DE3615562A1 (en) * | 1986-05-09 | 1987-11-12 | Basf Ag | METHOD FOR PRODUCING COPOLYMERISATS OF ETHYLENE WITH ACRYLIC ACID ESTERS IN A TUBE REACTOR AT PRESSURES ABOVE 500 BAR |
-
1970
- 1970-08-07 CH CH1194970A patent/CH536325A/en not_active IP Right Cessation
-
1971
- 1971-06-05 DE DE19712128134 patent/DE2128134B2/en not_active Withdrawn
- 1971-06-09 GB GB1965271A patent/GB1347361A/en not_active Expired
- 1971-06-17 BE BE768620A patent/BE768620A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016517A1 (en) * | 1993-12-13 | 1995-06-22 | Borealis Holding A/S | Process for the production of polyolefins in an autoclave reactor |
| US5965674A (en) * | 1993-12-13 | 1999-10-12 | Borealis Holding A/S | Process for the production of polyolefins in an autoclave reactor |
| US20100113692A1 (en) * | 2008-11-04 | 2010-05-06 | Mcguire Jr James E | Apparatus for Continuous Production of Partially Polymerized Compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| CH536325A (en) | 1973-04-30 |
| BE768620A (en) | 1971-11-03 |
| DE2128134B2 (en) | 1980-07-17 |
| DE2128134A1 (en) | 1972-02-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee | ||
| PCPE | Delete 'patent ceased' from journal |
Free format text: 4846,PAGE 164 |
|
| PCNP | Patent ceased through non-payment of renewal fee |