GB742625A - Constant environment process for polymerizing ethylene - Google Patents
Constant environment process for polymerizing ethyleneInfo
- Publication number
- GB742625A GB742625A GB28911/53A GB2891153A GB742625A GB 742625 A GB742625 A GB 742625A GB 28911/53 A GB28911/53 A GB 28911/53A GB 2891153 A GB2891153 A GB 2891153A GB 742625 A GB742625 A GB 742625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- initiator
- constant
- polymerization
- autoclave
- 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
<PICT:0742625/IV(a)/1> A continuous process for the polymerization of ethylene is conducted in an autoclave with turbulent end-over-end mixing at substantially constant super-atmospheric pressure and elevated temperature, with constant initiator concentration and a constant ratio of polymer to unreacted ethylene, preferably 0.05 to 0.50. A mixture of ethylene and initiator is introduced into the autoclave 1 through conduit 5. Stirrer 2 is started and the feed continued until the desired pressure is reached, which is regulated by opening conduit 6. The temperature is then raised by internal or external heaters until polymerization starts and the temperature rises. The amount of initiator is reduced, heating of the feed and/or reaction mixture is reduced and the rate of introduction of the reactants and of removal of polymer controlled to maintain constant conditions. Suitable initiators are hydrogen, benzoyl, lauroyl, ditertiary butyl, and diethyl peroxides, diethyl peroxydicarbonate, tetraethyl lead, aluminium hydroxide, triethyl aluminium, ethyl magnesium chloride and a ,a 1-azodiisobutyronitrile. The polymerization may be carried out in bulk or in cyclohexane alone or mixed with benzene. The products have a narrow molecular weight range and improved extrusion properties. Specifications 471,590, 579,894 and 626,155 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US742625XA | 1952-11-14 | 1952-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB742625A true GB742625A (en) | 1955-12-30 |
Family
ID=22118637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28911/53A Expired GB742625A (en) | 1952-11-14 | 1953-10-20 | Constant environment process for polymerizing ethylene |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1018622B (en) |
GB (1) | GB742625A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2062923A1 (en) * | 1969-09-19 | 1971-07-02 | Stamicarbon | |
FR2458560A1 (en) * | 1979-06-04 | 1981-01-02 | Princeton Polymer Lab | PROCESS FOR THE PREPARATION OF POLYETHYLENE WAXES |
CN118063651A (en) * | 2024-01-15 | 2024-05-24 | 浙江大学 | Autoclave type polymerization process |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE624178A (en) * | 1961-10-31 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2475643A (en) * | 1946-12-31 | 1949-07-12 | Standard Oil Co | Ethylene polymerization process |
-
1953
- 1953-10-20 GB GB28911/53A patent/GB742625A/en not_active Expired
- 1953-10-31 DE DEP10734A patent/DE1018622B/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2062923A1 (en) * | 1969-09-19 | 1971-07-02 | Stamicarbon | |
US3692763A (en) * | 1969-09-19 | 1972-09-19 | Pieter Van Saane | High pressure polymerization of ethylene and apparatus therefore |
FR2458560A1 (en) * | 1979-06-04 | 1981-01-02 | Princeton Polymer Lab | PROCESS FOR THE PREPARATION OF POLYETHYLENE WAXES |
CN118063651A (en) * | 2024-01-15 | 2024-05-24 | 浙江大学 | Autoclave type polymerization process |
Also Published As
Publication number | Publication date |
---|---|
DE1018622B (en) | 1957-10-31 |
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