GB839425A - Improvements in or relating to the polymerisation of ethylene - Google Patents
Improvements in or relating to the polymerisation of ethyleneInfo
- Publication number
- GB839425A GB839425A GB3248158A GB3248158A GB839425A GB 839425 A GB839425 A GB 839425A GB 3248158 A GB3248158 A GB 3248158A GB 3248158 A GB3248158 A GB 3248158A GB 839425 A GB839425 A GB 839425A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- alcl3
- ticl4
- product
- catalyst
- 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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
- C07D307/50—Preparation from natural products
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
A catalyst for ethylene polymerization comprises components (a) TiCl4 and (b) the product of heating AlCl3 (1 mol.) with 0.8-5, preferably about 1.2 atoms of alkali metal (preferably Na; K and I are also mentioned) in the presence of ethylene or hydrogen or a mixture thereof. Preferably the molecular ratio AlCl3 : TiCl4 is 2-500, particularly 15-80. Catalyst preparation and the subsequent polymerization may be effected in presence of an inert organic solvent, preferably xylene, but also, e.g. hexane, cyclohexane or petrolatum. French Specification 1,137,459 is referred to.ALSO:Ethylene is polymerized under a pressure of below 200 kg/cm2 by means of a catalyst which comprises TiCl4 and the product of heating AlCl3 (1 mol.) with Na (0.8-5, but preferably about 1.2, atoms) or other alkali metal, in the presence of ethylene, hydrogen or a mixture thereof; an inert solvent, preferably xylene, but also e.g. hexane, cyclohexane or petrolatum, is used and the preferred conditions are pressure below 100 kg/cm2 and temperature below 200 DEG C. The product is purified by use of methanol, methanolic HCl and acetone. In the examples, polyethylenes of molecular weight up to 263, 400 are produced. Reference is made to copolymers of ethylene with other (unspecified) olefines. French Specification 1,137,459 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1184303T | 1957-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB839425A true GB839425A (en) | 1960-06-29 |
Family
ID=42732592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3248158A Expired GB839425A (en) | 1957-10-14 | 1958-10-10 | Improvements in or relating to the polymerisation of ethylene |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE571811A (en) |
DE (1) | DE1125653B (en) |
FR (2) | FR1184303A (en) |
GB (1) | GB839425A (en) |
NL (2) | NL100536C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU681032A1 (en) * | 1976-02-23 | 1979-08-25 | Грозненский филиал Охтинского научно-производственного объединения "Пластполимер" | Process for the preparation of dimers and codimers of alpha-olefins |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT536321A (en) * | 1954-02-25 |
-
0
- NL NL232063D patent/NL232063A/xx unknown
-
1957
- 1957-10-14 FR FR1184303D patent/FR1184303A/en not_active Expired
-
1958
- 1958-05-30 FR FR766725A patent/FR73657E/en not_active Expired
- 1958-10-07 DE DE1958A0030475 patent/DE1125653B/en active Pending
- 1958-10-07 BE BE571811D patent/BE571811A/xx unknown
- 1958-10-08 NL NL232063A patent/NL100536C/xx active
- 1958-10-10 GB GB3248158A patent/GB839425A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL232063A (en) | |
FR73657E (en) | 1960-09-05 |
NL100536C (en) | 1962-02-15 |
DE1125653B (en) | 1962-03-15 |
BE571811A (en) | 1959-04-07 |
FR1184303A (en) | 1959-07-20 |
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