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특허 상세정보

Polyethylene films with improved physical properties

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08F-004/06    C08F-210/14    B32B-027/32    B29C-047/88   
미국특허분류(USC) 526/113; 526/348; 526/348.1; 526/348.5; 526/943; 428/212; 428/220; 428/523; 428/910; 264/176.1; 264/209.5; 264/211.2
출원번호 US-0199446 (2002-07-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 35  인용 특허 : 30
초록

Metallocene catalyzed polyethylenes are found to have improved physical properties, improved processability and improved balance of properties. Surprisingly, there is a direct relationship between MD shrinkage, and MD tear. Additionally, MD tear is greater than TD tear, and MD tear is also greater than intrinsic tear. MD tear to TD tear ratios are above 0.9, and dart drop impact is above 500 g/mil. The polyethylenes have a relatively broad composition distribution and relatively broad molecular weight distribution.

대표
청구항

1. A film comprising a LLDPE, wherein LLDPE is produced in a gas phase process utilizing a hafnium transition metal metallocene-type catalyst system; wherein the film has a ratio of MD tear to TD tear, both determined by ASTM D-1922, of ?0.9; wherein the MD tear of the film increases with increasing MD shrinkage.2. The film of claim 1, wherein the film properties are attainable at ?10 pounds of polymer composition output per hour per inch of die circumference.3. The film of claim 1, wherein the film properties are attainable at ?12 pounds of polymer comp...

이 특허에 인용된 특허 (30)

  1. Valyi Emery I. (5200 Sycamore Ave. New York NY 10471). Apparatus for making oriented hollow plastic articles. USP1976063966378.
  2. Resconi Luigi,ITX ; Jones Robert L.. Bridged bis-fluorenyl metallocenes, process for the preparation thereof and use thereof in catalysts for the polymerizat. USP1998075786495.
  3. Jung Michael,DEX ; Alt Helmut G.,DEX ; Welch M. Bruce. Bridged fluorenyl/indenyl metallocenes and the use thereof. USP1999035886202.
  4. Yamawaki Takashi (Ichihara JPX). Butene-1 polymer film and laminated film thereof. USP1992035093189.
  5. Bullard Edward M. (Rochester NY) Smith Gregory M. (Palmyra NY). Coextruded multi-layer polyethylene film and bag construction. USP1981124303710.
  6. Winter Andreas (Kelkheim DEX) Dolle Volker (Kelkheim DEX) Rohrmann Jurgen (Neufahrn DEX) Spaleck Walter (Liederbach DEX). Compound useful for the preparation of a 1-olefin polymer. USP1997105679812.
  7. Watanabe Hideo,JPX ; Sato Masahiko,JPX ; Ikeda Masaaki,JPX ; Hattori Takaaki,JPX ; Hatakeyama Yoshihiro,JPX ; Miwa Naoki,JPX ; Kamiya Tatsuyuki,JPX ; Sakuma Hisao,JPX ; Umeshima Yuka,JPX. Ethylene-.alpha.-olefin copolymer and composition, and film, laminate and electrical insulating material comprising sam. USP1999025874513.
  8. Haruo Shikuma JP; Shuji Machida JP; Motoharu Ishikawa JP; Shinichi Kurokawa JP. Ethylenic copolymer, composition containing said copolymer, and ethylenic copolymer film. USP2002086441116.
  9. Sukhadia Ashish M. ; Rohlfing David C. ; Janzen Jay ; DesLauriers Paul J. ; Byers Jim D. ; Moore ; Jr. Louis ; Welch M. Bruce ; Palackal Syriac J. ; Whitte William M. ; Coutant William R. ; Cowan Kip. Films comprising metallocene catalyzed polyethylene. USP2001046214469.
  10. Bahl Surinder K. (Chandigarh NJ INX) Canterino Peter J. (Towaco NJ) Shaw Richard G. (Piscataway NJ). Films of LLDPE, PP and EPR having improved stiffness, tear and impact strength. USP1987094692496.
  11. Brady ; III Robert C. (Morristown NJ) Karol Frederick J. (Belle Mead NJ) Lynn Timothy R. (Hackettstown NJ) Jorgensen Robert J. (Belle Mead NJ) Kao Sun-Chueh (Belle Mead NJ) Wasserman Eric P. (Hopewel. Gas phase polymerization reactions utilizing soluble unsupported catalysts. USP1994055317036.
  12. Best Steven A. (Houston TX) Daniluk Thomas S. (Barrington IL). High molecular weight high density polyethylene with improved tear resistance. USP1997065635262.
  13. van Beek Johannus A. M.,NLX ; de Vries Johannes G.,NLX ; Arts Henricus J.,NLX ; Persad Radjindrakumar,NLX ; van Doremaele Gerardus H. J.,NLX. Indenyl compounds and catalyst components for the polymerization of olefins. USP1999115990253.
  14. Arjunan Palanisamy ; Chow Wai Yan,CNX ; Harrington Bruce Allan ; Wang Yu Feng ; Yang Henry. LLDPE blends with an ethylene-norbornene copolymer for resins of improved toughness and processibility for film production. USP2000086111019.
  15. Stehling Ferdinand C. (Baytown TX) Speed Charles S. (Dayton TX) Welborn ; Jr. Curtis H. (Houston TX). Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distribution. USP1995015382630.
  16. Stehling Ferdinand C. (Baytown TX) Speed Charles S. (Dayton TX) Welborn ; Jr. ; deceased Howard C. (late of Houston TX by John L. Zipprich ; II ; executor). Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distributions. USP1995015382631.
  17. Harbourne David A. (Kingston CAX). Manufacture of film from partially crosslinked polyethylene. USP1980104226905.
  18. Jejelowo Moses O. (Kingwood TX). Metallocene catalysts and their production and use. USP1994105359015.
  19. Resconi Luigi,ITX ; Piemontesi Fabrizio,ITX ; Nifant'ev Ilya E.,RUX ; Ivchenko Pavel V.,RUX. Metallocene compounds, process for their preparation, and their use in catalysts for the polymerization of olefins. USP2000046051728.
  20. Pradeep Jain ; Lonnie G. Hazlitt ; Jacquelyn A. deGroot ; Kenneth W. Anderson. Narrow MWD, compositionally optimized ethylene interpolymer composition, process for making the same and article made therefrom. USP2002106469103.
  21. Kelly L. Williams ; Leonard V. Cribbs ; Stephen M. Imfeld ; Venki Chandrashekar. Polyethylene blends and films. USP2002036355733.
  22. Giuliano Cecchin IT; Gianni Collina IT; Massimo Covezzi IT; Marco Ciarafoni IT; Remo Anibaldi IT. Polyethylene compositions having improved mechanical properties and improved processability in the melted state. USP2002086437047.
  23. Loveday Donald R. ; Jejelowo Moses Olukayode ; Kao Sun-Chueh. Polymerization catalyst systems comprising substituted hafnocenes. USP2001066248845.
  24. Williams, Kelly L.. Preparation of machine direction oriented polyethylene films. USP2003096613841.
  25. Hahm Diane M. (Wilmington DE). Process for manufacturing cast amorphous film. USP1993105256359.
  26. Snyder John Douglas. Process for manufacturing heat-shrinkable polyethylene film. USP1999055904964.
  27. Tsutsui Toshiyuki (Kuga-gun JPX) Yoshitsugu Ken (Kuga-gun JPX) Toyota Akinori (Kuga-gun JPX). Process for preparing ethylene copolymers. USP1996065525689.
  28. Rohrmann Jurgen,DEX ; Kuber Frank,DEX. Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts. USP1999075929264.
  29. James Chin-Kuang Huang CA; Peter Andrew Sipos CA; Lawrence Thomas Kale CA; Patrick R. Thomas ; James Arthur Auger CA. Shrink films. USP2002016340532.
  30. Cheruvu Subrahmanyam (Robbinsville NJ) Lo Frederick Y. (Edison NJ). Temperature control of MW in olefin polymerization using supported metallocene catalyst. USP1997035608019.

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