GB1438722A - Production of polyethylenes - Google Patents
Production of polyethylenesInfo
- Publication number
- GB1438722A GB1438722A GB4206973A GB4206973A GB1438722A GB 1438722 A GB1438722 A GB 1438722A GB 4206973 A GB4206973 A GB 4206973A GB 4206973 A GB4206973 A GB 4206973A GB 1438722 A GB1438722 A GB 1438722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyethylene
- hydrocarbyl
- sept
- halogen
- values
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/02—Ethene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
1438722 Polyethylene preparation SNAMPROGETTI SpA 6 Sept 1973 [26 Sept 1972] 42069/73 Heading C3P Polyethylene having a narrow molecular weight distribution is obtained by polymerizing ethylene in the presence of a catalyst constituted by (a) a vanadium compound of formula where R<SP>1</SP> is hydrocarbyl, X is halogen, and y is 0, 1, 2 or 3, and (b) an organoaluminium compound of formula where R is hydrocarbyl, X is halogen and x is 0, 1 or 2, or such an organoaluminium compound complexed with a Lewis base. Hydrogen may be present. The products have Mw/Mn values up to 3À6 and I 21À6 /I 2À16 values up to 30. In examples polyethylene is obtained using V(NEt 2 ) 4 -EtAlCl 2 or Et 2 AlCl.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT29663/72A IT967855B (en) | 1972-09-26 | 1972-09-26 | PROCESS FOR THE PRODUCTION OF POLYETHYLENE WITH RESTRICTED DISTRIBUTION OF MOLECULAR WEIGHTS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1438722A true GB1438722A (en) | 1976-06-09 |
Family
ID=11228207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4206973A Expired GB1438722A (en) | 1972-09-26 | 1973-09-06 | Production of polyethylenes |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS4971078A (en) |
| AU (1) | AU476673B2 (en) |
| BE (1) | BE805098A (en) |
| CA (1) | CA1028448A (en) |
| CH (1) | CH606143A5 (en) |
| CS (1) | CS183716B2 (en) |
| DD (1) | DD106657A5 (en) |
| DE (1) | DE2348489A1 (en) |
| DK (1) | DK139525B (en) |
| FR (1) | FR2200289B1 (en) |
| GB (1) | GB1438722A (en) |
| IT (1) | IT967855B (en) |
| LU (1) | LU68501A1 (en) |
| NL (1) | NL7313285A (en) |
| SU (1) | SU568373A3 (en) |
| ZA (1) | ZA735544B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT987223B (en) * | 1973-05-09 | 1975-02-20 | Snam Progetti | PROCEDURE FOR THE PRODUCTION OF FIBROUS POLYALFAO LEFINE GELI |
| FI66405C (en) * | 1978-03-31 | 1984-10-10 | Union Carbide Corp | FOERFARANDE FOER FRAMSTAELLNING AV EN POLYMERISERINGSKATALYSATOR OCH DESS ANVAENDNING FOER HOMOPOLYMERISERING AV ETYLEN |
| US5086023A (en) * | 1991-06-13 | 1992-02-04 | Akzo N.V. | Catalyst for EPDM polymerization |
| DE102004029273A1 (en) * | 2004-06-17 | 2006-01-05 | Bayer Aktiengesellschaft | Vanadium amido complexes for olefin polymerization |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1369866A (en) * | 1962-09-25 | 1964-08-14 | Snam Spa | Process for the catalytic polymerization of mono-olefins and di-olenes |
-
1972
- 1972-09-26 IT IT29663/72A patent/IT967855B/en active
-
1973
- 1973-08-13 AU AU59149/73A patent/AU476673B2/en not_active Expired
- 1973-08-14 ZA ZA735544A patent/ZA735544B/en unknown
- 1973-08-30 CA CA179,962A patent/CA1028448A/en not_active Expired
- 1973-09-06 JP JP48099788A patent/JPS4971078A/ja active Pending
- 1973-09-06 GB GB4206973A patent/GB1438722A/en not_active Expired
- 1973-09-20 BE BE135858A patent/BE805098A/en unknown
- 1973-09-21 FR FR7333941A patent/FR2200289B1/fr not_active Expired
- 1973-09-21 DK DK518873AA patent/DK139525B/en unknown
- 1973-09-25 LU LU68501A patent/LU68501A1/xx unknown
- 1973-09-25 DD DD173659A patent/DD106657A5/xx unknown
- 1973-09-25 SU SU7301958730A patent/SU568373A3/en active
- 1973-09-25 CS CS7300006586A patent/CS183716B2/en unknown
- 1973-09-26 CH CH1379673A patent/CH606143A5/xx not_active IP Right Cessation
- 1973-09-26 DE DE19732348489 patent/DE2348489A1/en active Pending
- 1973-09-26 NL NL7313285A patent/NL7313285A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DK139525B (en) | 1979-03-05 |
| SU568373A3 (en) | 1977-08-05 |
| BE805098A (en) | 1974-01-16 |
| FR2200289A1 (en) | 1974-04-19 |
| CS183716B2 (en) | 1978-07-31 |
| LU68501A1 (en) | 1973-12-07 |
| FR2200289B1 (en) | 1976-10-01 |
| CH606143A5 (en) | 1978-10-31 |
| IT967855B (en) | 1974-03-11 |
| CA1028448A (en) | 1978-03-21 |
| AU476673B2 (en) | 1976-09-30 |
| AU5914973A (en) | 1975-02-13 |
| NL7313285A (en) | 1974-03-28 |
| DD106657A5 (en) | 1974-06-20 |
| DK139525C (en) | 1979-09-24 |
| DE2348489A1 (en) | 1974-04-18 |
| ZA735544B (en) | 1974-11-27 |
| JPS4971078A (en) | 1974-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |