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CA2071779A1 - High melt strength, ethylene polymer, process for making it, and use thereof - Google Patents

High melt strength, ethylene polymer, process for making it, and use thereof

Info

Publication number
CA2071779A1
CA2071779A1 CA2071779A CA2071779A CA2071779A1 CA 2071779 A1 CA2071779 A1 CA 2071779A1 CA 2071779 A CA2071779 A CA 2071779A CA 2071779 A CA2071779 A CA 2071779A CA 2071779 A1 CA2071779 A1 CA 2071779A1
Authority
CA
Canada
Prior art keywords
ethylene polymer
polymer
making
melt strength
high melt
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.)
Granted
Application number
CA2071779A
Other languages
French (fr)
Other versions
CA2071779C (en
Inventor
Anthony J. Denicola, Jr.
John W. Mayfield
Thomas F. Mclaughlin
James R. Beren
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.)
Basell North America Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2071779A1 publication Critical patent/CA2071779A1/en
Application granted granted Critical
Publication of CA2071779C publication Critical patent/CA2071779C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C08F10/02—Ethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Disclosed is a normally solid, high molecular weight, gel-free, irradiated ethylene polymer having a density of from 0.89 to 0.97 g/cc characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer. Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, ethylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.
CA002071779A 1991-06-21 1992-06-22 High melt strength, ethylene polymer, process for making it, and use thereof Expired - Fee Related CA2071779C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US71895191A 1991-06-21 1991-06-21
US07/718,951 1991-06-21
US72003691A 1991-06-24 1991-06-24
US07/720,036 1991-06-24
US89747292A 1992-06-18 1992-06-18
US07/897,472 1992-06-18

Publications (2)

Publication Number Publication Date
CA2071779A1 true CA2071779A1 (en) 1992-12-22
CA2071779C CA2071779C (en) 1997-01-21

Family

ID=27418987

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002071779A Expired - Fee Related CA2071779C (en) 1991-06-21 1992-06-22 High melt strength, ethylene polymer, process for making it, and use thereof

Country Status (9)

Country Link
JP (1) JP3386150B2 (en)
KR (1) KR100266044B1 (en)
CN (1) CN1045210C (en)
AU (1) AU1846692A (en)
BR (1) BR9202331A (en)
CA (1) CA2071779C (en)
FI (1) FI922879A (en)
MX (1) MX9203077A (en)
NO (1) NO922435L (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08269262A (en) * 1995-03-30 1996-10-15 Showa Denko Kk Polypropylene resin composition
JPH1067871A (en) * 1996-08-28 1998-03-10 Asahi Chem Ind Co Ltd Production of microporous polyethylene film
JP4503114B2 (en) * 1998-06-10 2010-07-14 デピュイ・オルソペディックス・インコーポレイテッド Cross-linked plastic support
JP4140107B2 (en) * 1998-12-28 2008-08-27 東ソー株式会社 Ethylene resin composition and foam comprising the same
PL1654320T3 (en) * 2003-08-12 2007-01-31 Basell Poliolefine Italia Srl Irradiated butene-1 polymer compositions
JP2005146129A (en) * 2003-11-17 2005-06-09 Mitsui Chemicals Inc ETHYLENE-alpha-OLEFIN COPOLYMER, RESIN COMPOSITION COMPOSED OF THE SAME, AND FILM OR SHEET MADE OF IT
JP2010276128A (en) * 2009-05-29 2010-12-09 Sumitomo Chemical Co Ltd tube
BR112015020461B1 (en) * 2013-03-28 2020-06-02 Dow Global Technologies Llc BLOWED FILM AND ARTICLE
EP3289009B1 (en) * 2015-04-30 2021-05-26 SABIC Global Technologies B.V. High density polyethylene
KR20180014155A (en) * 2015-06-05 2018-02-07 트레데가르 필름 프로덕츠 코포레이션 Low micro gel surface protective film
WO2017121506A1 (en) * 2016-01-12 2017-07-20 Sabic Global Technologies B.V. Foamed injection moulded article
CN106632784A (en) * 2016-10-27 2017-05-10 段恒宇 Preparation method of ethylene/alpha-olefin copolymer, and application of ethylene/alpha-olefin copolymer in pipeline transmission

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586995A (en) * 1982-09-17 1986-05-06 Phillips Petroleum Company Polymer and irradiation treatment method
IN166935B (en) * 1985-01-31 1990-08-11 Himont Inc
EP0190889B2 (en) * 1985-01-31 2000-07-05 Montell North America Inc. Polypropylene with free-end long chain branching, process for making it, and use thereof

Also Published As

Publication number Publication date
CN1045210C (en) 1999-09-22
KR100266044B1 (en) 2000-09-15
KR930000547A (en) 1993-01-15
NO922435L (en) 1992-12-22
FI922879A (en) 1992-12-22
MX9203077A (en) 1994-06-30
CA2071779C (en) 1997-01-21
BR9202331A (en) 1993-01-19
JPH0693033A (en) 1994-04-05
FI922879A0 (en) 1992-06-18
CN1069038A (en) 1993-02-17
JP3386150B2 (en) 2003-03-17
AU1846692A (en) 1992-12-24
NO922435D0 (en) 1992-06-19

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