Polyethylene resin, method for producing the same, and pipe and joint produced by using the resin

Polyethylene resin, method for producing the same, and pipe and joint produced by using the resin

  • CN 101,180,323 A
  • Filed: 05/23/2006
  • Published: 05/14/2008
  • Est. Priority Date: 05/23/2005
  • Status: Active Application
First Claim
Patent Images

1. polyvinyl resin (A) that is used for pipe, it satisfies following requirement (a)~

  • (d);

    (a) high loading melt flow (HLa) is 5~

    20g/10 minute;

    (b) density (Da) is 0.945~

    0.965g/cm 3(c) alpha-olefin content (Ca) is 0.05~

    1.5mol%;

    With(d) rupture time (T), HLa and the Ca that measures by Lander method jaggy-ESCR satisfies following formula;

    log?T≥

    -2.9×

    logHLa+5.1×

    logCa+6.8。

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