GB997408A - Polymerisation and copolymerisation process - Google Patents
Polymerisation and copolymerisation processInfo
- Publication number
- GB997408A GB997408A GB51563A GB51563A GB997408A GB 997408 A GB997408 A GB 997408A GB 51563 A GB51563 A GB 51563A GB 51563 A GB51563 A GB 51563A GB 997408 A GB997408 A GB 997408A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- activity
- chain transfer
- polymerization
- polymerisation
- 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
Ethylene is polymerized in a tubular reactor at a pressure of at least 20,000 p.s.i. in the presence of a chain transfer agent having a sufficiently high degree of activity for it to be used up at such a rate that its concentration decreases with respect to ethylene as the polymerization proceeds. Specified chain transfer agents are numerous mercaptans, in particular butyl or dodecyl mercaptan, trimethylsilane and diphenylphosphine. Optional ingredients are other monomers (propylene, butylene, styrene, vinyl acetate, vinyl chloride, methyl acrylate or methacrylate, or acrylonitrile), polymerization modifiers of low degree of activity (hydrocarbons, aldehydes, alcohols, acetone, hydrogen, carbon dioxide or a phenolic compound), and free-radical catalysts.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL302781D NL302781A (en) | 1963-01-04 | ||
GB51563A GB997408A (en) | 1963-01-04 | 1963-01-04 | Polymerisation and copolymerisation process |
DE19641520358 DE1520358A1 (en) | 1963-01-04 | 1964-01-02 | Process for the production of ethylene polymers |
FR959179A FR1379344A (en) | 1963-01-04 | 1964-01-02 | Process for the polymerization and copolymerization of ethylene to form resins |
BE642099D BE642099A (en) | 1963-01-04 | 1964-01-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB51563A GB997408A (en) | 1963-01-04 | 1963-01-04 | Polymerisation and copolymerisation process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB997408A true GB997408A (en) | 1965-07-07 |
Family
ID=9705727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB51563A Expired GB997408A (en) | 1963-01-04 | 1963-01-04 | Polymerisation and copolymerisation process |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE642099A (en) |
DE (1) | DE1520358A1 (en) |
GB (1) | GB997408A (en) |
NL (1) | NL302781A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100087606A1 (en) * | 2008-10-07 | 2010-04-08 | Karjala Teresa P | High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents |
WO2013095862A1 (en) | 2011-12-21 | 2013-06-27 | Dow Global Technologies Llc | Interpolymer compositions and methods for making same |
EP2655444B2 (en) † | 2010-12-22 | 2018-11-21 | Basell Polyolefine GmbH | Process for the preparation of ethylene copolymers in the presence of free-radical polymerization initiator by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers |
CN112280158A (en) * | 2020-09-28 | 2021-01-29 | 中国石油化工股份有限公司 | High-density polyethylene resin for modified small hollow blow molding and preparation method thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7745550B2 (en) † | 2001-12-19 | 2010-06-29 | Exxonmobil Chemical Patents Inc. | Tubular polymerization reactors and polymers made therein |
-
0
- NL NL302781D patent/NL302781A/xx unknown
-
1963
- 1963-01-04 GB GB51563A patent/GB997408A/en not_active Expired
-
1964
- 1964-01-02 DE DE19641520358 patent/DE1520358A1/en active Pending
- 1964-01-03 BE BE642099D patent/BE642099A/xx unknown
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100087606A1 (en) * | 2008-10-07 | 2010-04-08 | Karjala Teresa P | High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents |
WO2010042390A1 (en) | 2008-10-07 | 2010-04-15 | Dow Global Technologies Inc. | High pressure low density polyethylene resins with improved optical properties produced through the use of highly active chain transfer agents |
US20110178253A1 (en) * | 2008-10-07 | 2011-07-21 | Dow Global Technologies Llc | High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents |
US8415442B2 (en) | 2008-10-07 | 2013-04-09 | Dow Global Technologies Llc | High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents |
US8859704B2 (en) | 2008-10-07 | 2014-10-14 | Dow Global Technologies Llc | High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents |
EP2655444B2 (en) † | 2010-12-22 | 2018-11-21 | Basell Polyolefine GmbH | Process for the preparation of ethylene copolymers in the presence of free-radical polymerization initiator by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers |
WO2013095862A1 (en) | 2011-12-21 | 2013-06-27 | Dow Global Technologies Llc | Interpolymer compositions and methods for making same |
CN112280158A (en) * | 2020-09-28 | 2021-01-29 | 中国石油化工股份有限公司 | High-density polyethylene resin for modified small hollow blow molding and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
NL302781A (en) | |
BE642099A (en) | 1964-07-03 |
DE1520358A1 (en) | 1970-01-02 |
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