[go: up one dir, main page]

GB934444A - Polymerisation and copolymerisation of ethylene - Google Patents

Polymerisation and copolymerisation of ethylene

Info

Publication number
GB934444A
GB934444A GB4238359A GB4238359A GB934444A GB 934444 A GB934444 A GB 934444A GB 4238359 A GB4238359 A GB 4238359A GB 4238359 A GB4238359 A GB 4238359A GB 934444 A GB934444 A GB 934444A
Authority
GB
United Kingdom
Prior art keywords
ethylene
peroxide
reactor
polymerization
butyl
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
Application number
GB4238359A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Publication of GB934444A publication Critical patent/GB934444A/en
Expired legal-status Critical Current

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

A process for the polymerization of ethylene at high pressure comprises passing ethylene, optionally together with a copolymerizable monomer, and a free radical generating polymerization initiator at the inlet of a tubular reactor so that polymerization occurs in the reactor, and injecting ethylene, optionally together with copolymerizable monomer, and a free radical generating polymerization initiator at at least one point along the length of the reactor, the temperature of the ethylene, optional comonomer and initiator that is injected being below the temperature in the reactor where injection takes place. The copolymerizable monomer may be another olefin or a vinyl compound. The initiator may be hydrogen peroxide, diethyl peroxide, di-t.-butyl peroxide, butyryl peroxide, lauroyl peroxide, benzoyl peroxide, alkyl hydroperoxides, diperoxy dicarbonate esters, t.-butyl perbenzoate, potassium persulphate, azo diisobutyronitrile, benzalazine or acetone oxime, or mixtures, e.g. of lauroyl and t.-butyl peroxides. The polymerization may be effected in the presence of modifiers, e.g. ethane, propane, n-butane, isopentane, cyclohexane, methylcyclohexane, toluene, xylene, t.-butyl alcohol, acetone, hydrogen, carbon dioxide and phenolic compounds, which may be added with the injected ethylene if desired. The example describes the polymerization of ethylene in the presence of propane and a mixture of lauroyl and t.-butyl peroxides with the injection of reactants at one and two points along the length of the reactor. The polymers may be made into films.
GB4238359A 1958-12-17 1959-12-14 Polymerisation and copolymerisation of ethylene Expired GB934444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78095358A 1958-12-17 1958-12-17

Publications (1)

Publication Number Publication Date
GB934444A true GB934444A (en) 1963-08-21

Family

ID=25121193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4238359A Expired GB934444A (en) 1958-12-17 1959-12-14 Polymerisation and copolymerisation of ethylene

Country Status (5)

Country Link
BE (1) BE585741A (en)
DE (1) DE1294013C2 (en)
FR (1) FR1248159A (en)
GB (1) GB934444A (en)
NL (1) NL246540A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725378A (en) * 1958-12-17 1973-04-03 Monsanto Co Polymerization of ethylene
EP0121755A2 (en) * 1983-03-12 1984-10-17 BASF Aktiengesellschaft Process for the manufacture of ethylene polymers at a pressure of at least 500 bar in a two-zone tubular reactor
WO2013059042A1 (en) 2011-10-19 2013-04-25 Dow Global Technologies Llc Polymerization processes with fresh ethylene distributions for preparation of low density ethylene-based polymers
WO2016050462A1 (en) * 2014-10-01 2016-04-07 Basell Polyolefine Gmbh Low density polyethylene with high elongation hardening
WO2017106940A1 (en) * 2015-12-22 2017-06-29 Braskem S.A. Device for injecting a polymerization initiator in a tubular reactor, tubular reactor for continuous polymerization of olefins, and process for producing ethylene copolymers and polymers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL126425C (en) * 1961-07-21
NL282622A (en) * 1961-09-01
DE2124221B2 (en) * 1971-05-15 1980-10-30 Imhausen International Co. Reg. Trust, Vaduz Process for the continuous polymerization of ethylene

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065613B (en) * 1954-06-30 1959-09-17 Esso Research and Engineering Company, Elizabeth, N J (V St A) Process for the polymerization of ethylene

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725378A (en) * 1958-12-17 1973-04-03 Monsanto Co Polymerization of ethylene
EP0121755A2 (en) * 1983-03-12 1984-10-17 BASF Aktiengesellschaft Process for the manufacture of ethylene polymers at a pressure of at least 500 bar in a two-zone tubular reactor
EP0121755A3 (en) * 1983-03-12 1985-10-02 Basf Aktiengesellschaft Process for the manufacture of ethylene polymers at a pressure of at least 500 bar in a two-zone tubular reactor
EP3243849A2 (en) 2011-10-19 2017-11-15 Dow Global Technologies Llc Polymerization processes with fresh ethylene distributions for preparation of low density ethylene-based polymers
US9120880B2 (en) 2011-10-19 2015-09-01 Dow Global Technologies Llc Polymerization processes with fresh ethylene distributions for preparation of low density ethylene-based polymers
EP3002300A1 (en) 2011-10-19 2016-04-06 Dow Global Technologies LLC Polymerization processes with fresh ethylene distributions for preparation of low density ethylene-based polymers
WO2013059042A1 (en) 2011-10-19 2013-04-25 Dow Global Technologies Llc Polymerization processes with fresh ethylene distributions for preparation of low density ethylene-based polymers
WO2016050462A1 (en) * 2014-10-01 2016-04-07 Basell Polyolefine Gmbh Low density polyethylene with high elongation hardening
CN107075019A (en) * 2014-10-01 2017-08-18 巴塞尔聚烯烃股份有限公司 Low density polyethylene with high tensile stiffness
US10364306B2 (en) 2014-10-01 2019-07-30 Basell Polyolefine Gmbh Low density polyethylene with high elongation hardening
CN107075019B (en) * 2014-10-01 2020-05-05 巴塞尔聚烯烃股份有限公司 Low density polyethylene with high tensile stiffness
WO2017106940A1 (en) * 2015-12-22 2017-06-29 Braskem S.A. Device for injecting a polymerization initiator in a tubular reactor, tubular reactor for continuous polymerization of olefins, and process for producing ethylene copolymers and polymers
US10829568B2 (en) 2015-12-22 2020-11-10 Braskem S.A. Tubular reactor polymerization initiator injector device, tubular reactor for continuous polymerization of olefins, and a process for production of polymers and copolymers of ethylene

Also Published As

Publication number Publication date
DE1294013C2 (en) 1980-07-03
FR1248159A (en) 1960-12-09
DE1294013B (en) 1969-04-30
NL246540A (en)
BE585741A (en)

Similar Documents

Publication Publication Date Title
US3725378A (en) Polymerization of ethylene
GB1345673A (en) High pressure process for polyethylene production
GB934444A (en) Polymerisation and copolymerisation of ethylene
US4788265A (en) Preparation of copolmers of ethylene with acrylic acid esters in a tubular reactor at above 500 bar
US3377330A (en) Ethylene polymerization in the presence of a free-radical catalyst and as a chain-transfer agent a minor amount of phosphine
GB875983A (en) Ethylene polymers
GB1338280A (en) Process for the high pressure production of polyethylene
US3481908A (en) Terpolymers of ethylene,a mono-olefin,and an unsaturated amide
GB1484675A (en) Process for the polymerisation of vinyl monomers
GB596943A (en) Process for the production of copolymers containing chlorotrifluoroethylene and vinyl esters
GB734476A (en) Improvements in the production of polymers
GB608807A (en) Copolymers of halogenated ethylenes
GB921542A (en) Polymerisation of ethylene
KR840000586A (en) Method for producing polyethylene having certain physicochemical properties
US3450686A (en) Polymerization of ethylene utilizing an organoperoxysilane as the catalyst
GB1126756A (en) Process for the production of ethylene polymers or copolymers of ethylene
GB1090823A (en) Copolymerisation of ethylene
GB694408A (en) Improvements in or relating to the preparation of vinyl halide copolymers
GB827682A (en) Recovery of olefin polymers
ES344522A1 (en) Polymerisation of vinyl chloride
GB731791A (en) Manufacture of polymerisation products
ES249323A1 (en) Ethylene polymerization
GB590390A (en) Polymers and interpolymers of dichlorodifluoroethylene
GB1168911A (en) Ethylene Polymers
US3284432A (en) Polymerization of ethylene in the presence of a free radical initiator and ammonia