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GB1379853A - Polyethylenes and a process for the production of the same - Google Patents

Polyethylenes and a process for the production of the same

Info

Publication number
GB1379853A
GB1379853A GB727072A GB727072A GB1379853A GB 1379853 A GB1379853 A GB 1379853A GB 727072 A GB727072 A GB 727072A GB 727072 A GB727072 A GB 727072A GB 1379853 A GB1379853 A GB 1379853A
Authority
GB
United Kingdom
Prior art keywords
polyethylene
peroxide
polyethylenes
feb
linear polyethylene
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
GB727072A
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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of GB1379853A publication Critical patent/GB1379853A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides

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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1379853 Modifying linear polyethylene SNAM PROGETTI SpA 16 Feb 1972 [17 Feb 1971] 7270/72 Heading C3P The swelling on extrusion and melt strength of linear polyethylene are improved by reacting at elevated temperature with 0À05 to 10 weight per cent based on the polyethylene of at least one peroxide while subjecting the reactants to an effective mechanical degradation for a time sufficient to ensure that the resulting branched polyethylene has a molecular weight of the same order of magnitude as that of the linear polyethylene starting material. The polyethylene may be blended with the peroxide in a mixer at 145‹ to 300‹ C. In examples the polyethylenes are reacted with 1,3-di-(t.-butylperoxyisopropyl) benzene or dicumyl peroxide.
GB727072A 1971-02-17 1972-02-16 Polyethylenes and a process for the production of the same Expired GB1379853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2064471 1971-02-17

Publications (1)

Publication Number Publication Date
GB1379853A true GB1379853A (en) 1975-01-08

Family

ID=11169968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB727072A Expired GB1379853A (en) 1971-02-17 1972-02-16 Polyethylenes and a process for the production of the same

Country Status (6)

Country Link
BE (1) BE779419A (en)
DE (1) DE2207522A1 (en)
FR (1) FR2125972A5 (en)
GB (1) GB1379853A (en)
LU (1) LU64796A1 (en)
NL (1) NL7202002A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500648A (en) * 1983-04-25 1985-02-19 Exxon Research & Engineering Co. Long chain branching in polyolefins from ziegler-natta catalysts
US4851489A (en) * 1983-04-25 1989-07-25 Exxon Research & Engineering Company Long chain branching in polyolefins from Ziegler-Natta catalysts
USRE33269E (en) * 1981-06-22 1990-07-17 The British Petroleum Company P.L.C. Process for the treatment of linear low density polyethylene by organic peroxides which generate free radicals
US8202958B2 (en) 2008-03-13 2012-06-19 Dow Global Technologies Llc Long chain branched (LCB), block or interconnected copolymers of ethylene in combination with one other polymer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5278272A (en) * 1991-10-15 1994-01-11 The Dow Chemical Company Elastic substantialy linear olefin polymers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33269E (en) * 1981-06-22 1990-07-17 The British Petroleum Company P.L.C. Process for the treatment of linear low density polyethylene by organic peroxides which generate free radicals
US4500648A (en) * 1983-04-25 1985-02-19 Exxon Research & Engineering Co. Long chain branching in polyolefins from ziegler-natta catalysts
US4851489A (en) * 1983-04-25 1989-07-25 Exxon Research & Engineering Company Long chain branching in polyolefins from Ziegler-Natta catalysts
US8202958B2 (en) 2008-03-13 2012-06-19 Dow Global Technologies Llc Long chain branched (LCB), block or interconnected copolymers of ethylene in combination with one other polymer
US8541519B2 (en) 2008-03-13 2013-09-24 Dow Global Technologies Llc Long chain branched (LCB), block, or interconnected copolymers of ethylene in combination with one other polymer
US8697807B2 (en) 2008-03-13 2014-04-15 Dow Global Technologies Llc Long chain branched (LCB), block or interconnected copolymers of ethylene in combination with one other polymer
US9169343B2 (en) 2008-03-13 2015-10-27 Dow Global Technologies Llc Long chain branched (LCB), block, or interconnected copolymers of ethylene in combination with one other polymer

Also Published As

Publication number Publication date
BE779419A (en) 1972-06-16
LU64796A1 (en) 1972-07-04
NL7202002A (en) 1972-08-21
DE2207522A1 (en) 1972-09-07
FR2125972A5 (en) 1972-09-29

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Legal Events

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