Invention Grant
US07674869B2 Mini-random copolymer resins having improved mechanical toughness and related properties suitable for thin wall thermoforming applications 有权
具有改进的机械韧性和适用于薄壁热成型应用的相关性能的微型无规共聚物树脂

  • Patent Title: Mini-random copolymer resins having improved mechanical toughness and related properties suitable for thin wall thermoforming applications
  • Patent Title (中): 具有改进的机械韧性和适用于薄壁热成型应用的相关性能的微型无规共聚物树脂
  • Application No.: US11005918
    Application Date: 2004-12-07
  • Publication No.: US07674869B2
    Publication Date: 2010-03-09
  • Inventor: Mike MusgraveLuAnn KellyPeter Selg
  • Applicant: Mike MusgraveLuAnn KellyPeter Selg
  • Applicant Address: US TX Houston
  • Assignee: Fina Technology, Inc.
  • Current Assignee: Fina Technology, Inc.
  • Current Assignee Address: US TX Houston
  • Agent Tenley R. Krueger
  • Main IPC: C08L23/14
  • IPC: C08L23/14 C08L23/16
Mini-random copolymer resins having improved mechanical toughness and related properties suitable for thin wall thermoforming applications
Abstract:
A random copolymer having improved mechanical toughness and properties suitable for thin wall thermoforming applications is provided. The random copolymer exhibits the following physical properties: a flexural modulus profile having a 2% flexural modulus of about 168,000 psi, a 1% flexural modulus of about 190,000 psi, and a 0.4% flexural modulus of about 199,000 psi; a melt flow rate of at least about 2.0 g/10 min.; and a haze of less than about 40%. The random copolymer preferably comprises a copolymer of ethylene and propylene, wherein the ethylene content is in the range of from about 0.2% to about 0.8% ethylene by weight of the copolymer. The random copolymer also preferably includes a stabilizer and a clarifying agent such as a sorbitol based clarifier or a nucleator. Various articles of manufacture such as thermoformed containers and packaging may be formed from the random copolymer.
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