Heterogeneous, compositionally phase separated, ethylene alpha-olefin interpolymers

Heterogeneous, compositionally phase separated, ethylene alpha-olefin interpolymers

  • CN 101,360,766 A
  • Filed: 10/31/2006
  • Published: 02/04/2009
  • Est. Priority Date: 11/23/2005
  • Status: Active Application
First Claim
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1. , a kind of comprising and at least a C 3-10The multipolymer of the ethene of alpha-olefin copolymer is characterized in that:

  • A) according to ASTM D-1238,190 ℃

    /2.16 kilograms determined melt indexs of condition are 1.1 to 1.6 decigrams/minute,B) be 0.913 to 0.921 gram/cubic centimetre according to the determined density of ASTM-792,C) according to ASTM D-1238,190 ℃

    /2.16 kilograms of conditions and 190 ℃

    /10 kilograms determined I of condition 10/ I 2Be 7.0 to 7.7, D) be included in 30 to 90 ℃

    of scopes with 0.2 ℃

    of/minute determined normalization method SCBD of rate of cooling by CRYSTAF, bimodal distribution with first and second peaks that correspond respectively to low crystallization and high crystallinity polymer component, wherein said high crystallographic component 3/4 the height peak width less than 8 ℃

    , its weight that accounts for total polymer less than 20% andE) relative quantity of high crystallising part normalization method CRYSTAF peak temperature deducts the difference of the relative quantity of CRYSTAF curve minimum temperature in 75 to 85 ℃

    of scopes greater than 0.5 and less than 1.7.

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