GB1468502A - Preparation of ethylene polymers - Google Patents

Preparation of ethylene polymers

Info

Publication number
GB1468502A
GB1468502A GB4204276A GB4204276A GB1468502A GB 1468502 A GB1468502 A GB 1468502A GB 4204276 A GB4204276 A GB 4204276A GB 4204276 A GB4204276 A GB 4204276A GB 1468502 A GB1468502 A GB 1468502A
Authority
GB
United Kingdom
Prior art keywords
atmospheres
monomers
april
ethylene
ethylene copolymers
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
GB4204276A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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
Priority claimed from US349484A external-priority patent/US3884857A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1468502A publication Critical patent/GB1468502A/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)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1468502 Ethylene copolymers E I DU PONT DE NEMOURS & CO 9 April 1974 [9 April 1973] 42042/76 Divided out of 1468228 Heading C3P Ethylene copolymers of reduced gel content and low melt index are obtained by a continuous process comprising (a) introducing into a reactor monomers comprising at least 75% of ethylene and sufficient comonomer to provide at least 5% by weight of the polymer selected from vinyl esters, acrylic esters and optionally maleic acid or anhydride and an acrylic acid, (b) polymerizing at 100-250‹ C. and 1000-2500 atmospheres (c) reducing pressure on the effluent to 100-400 atmospheres to separate 90-97% of unreacted monomers, (d) further reducing pressure to 0-5 atmospheres gauge to separate remaining monomers and (e) adding, after the pressure has been reduced to below 250 atmospheres and when 90-97% of unreacted monomers have been separated, a free radical initiator dissolved in a non-wax solvent.
GB4204276A 1973-04-09 1974-04-09 Preparation of ethylene polymers Expired GB1468502A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US349484A US3884857A (en) 1971-05-14 1973-04-09 Low gel content ethylene copolymer/wax blends and process for preparation thereof

Publications (1)

Publication Number Publication Date
GB1468502A true GB1468502A (en) 1977-03-30

Family

ID=23372586

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1566474A Expired GB1468228A (en) 1973-04-09 1974-04-09 Preparation of ethylene polymers
GB4204276A Expired GB1468502A (en) 1973-04-09 1974-04-09 Preparation of ethylene polymers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1566474A Expired GB1468228A (en) 1973-04-09 1974-04-09 Preparation of ethylene polymers

Country Status (10)

Country Link
JP (1) JPS575829B2 (en)
AU (1) AU6765374A (en)
BE (1) BE813499R (en)
BR (1) BR7402822D0 (en)
CA (1) CA997087A (en)
DE (1) DE2417343C2 (en)
FR (1) FR2224490B1 (en)
GB (2) GB1468228A (en)
IT (1) IT1048505B (en)
NL (1) NL7404768A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59215354A (en) * 1983-05-23 1984-12-05 Sekisui Chem Co Ltd Wax composition and method for using the same
DE3404742A1 (en) * 1984-02-10 1985-08-14 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING COPOLYMERISATES OF ETHYLENE WITH COMONOMERS CONTAINING CARBOXYL GROUPS IN A 2-ZONE REACTOR AT PRESSURES ABOVE 500 BAR

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1277097A (en) * 1959-12-31 1961-11-24 Du Pont Compositions based on ethylene / vinyl acetate copolymers and petroleum paraffin
FR2109560A5 (en) * 1970-10-12 1972-05-26 Leuna Werke Ulbricht W Cross-linking of polyolefins - using 1, 1-di-tert-butyl peroxycyclohexane as cross-linking agent

Also Published As

Publication number Publication date
BE813499R (en) 1974-10-09
CA997087A (en) 1976-09-14
AU6765374A (en) 1975-10-09
DE2417343C2 (en) 1986-10-09
BR7402822D0 (en) 1974-11-19
FR2224490A1 (en) 1974-10-31
JPS509692A (en) 1975-01-31
NL7404768A (en) 1974-10-11
FR2224490B1 (en) 1977-10-21
DE2417343A1 (en) 1974-10-24
IT1048505B (en) 1980-12-20
JPS575829B2 (en) 1982-02-02
GB1468228A (en) 1977-03-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee