Ethylene/alpha-olefin block interpolymers

Ethylene/alpha-olefin block interpolymers

  • CN 105,001,584 A
  • Filed: 01/30/2009
  • Published: 10/28/2015
  • Est. Priority Date: 01/30/2008
  • Status: Active Application
First Claim
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1. a composition, it comprises at least one ethylene/a-olefins block interpolymers, described ethylene/a-olefins block interpolymers comprise for polymerising ethylene functional group with head and the tail mode engage at chemically different unit, described ethylene/a-olefins block interpolymers comprises the ethene at least about 70 % by mole, based on block polymer, the substantive remainder of block polymer is the alpha-olefin with 3 or more carbon atoms, and described ethylene/a-olefins block interpolymers comprises one or more different hard segment of alpha-olefin mole percent level and one or more soft chain segment, wherein:

  • The feature of described ethylene/a-olefins block interpolymers is molecular weight distribution M w/ M nfor about 1.4 to about 2.8, average block index is greater than 0 and at the most about 1.0, I 10/ I 2>

    8, and second-order transition temperature T gbe less than-30 DEG C;

    With Described ethylene/a-olefins block interpolymers is that mesophase spherule is separated, and it has the territory be separated that specific refractory power replaces, and wherein the size in territory makes it possible to the photon band gap providing reflected light in UV-visible spectrum, and the minimum size in described territory is 40nm to 300nm.

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