Nova Patents
EP1865005A2

Propylene polymer and composition containing the same, molded object and laminate comprising these, and processes for producing propylene polymer and composition containing the same

Abstract

A propylenic polymer according to the present invention or a composition thereof have an excellent melt flowability and contains a less amount of stickiness-causing components, and also has a low modulus and is pliable, and is capable of providing a transparent molded article, thus being useful as a substitute for a pliable vinyl chloride resin. In addition, a molded article made therefrom exhibits an excellent heat seal performance at a low temperature, and is excellent in terms of transparency and rigidity. Specifically, it has an isotactic pentad fraction (mmmm), which indicates a stereoregulariry, of 30 to 80 %, a molecular weight distribution (Mw/Mn) of 3.5 or less and an intrinsic viscosity [η] of 0.8 to 5 dl/g.

EP1865005A2, drawing sheet 1
Sheet 1 of 205

Term

Term ended

Projected expiry passed 25 June 2019, 7.2 years ago.

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16 claims: 10 independent, 6 dependent

  1. 1
    A propylene homopolymer satisfying the following requirements (1) and (2):(1) the amount of the components which are dissolved out into hexane at 25 °C (H25) ranges from 0 to 80 % by weight;and, (2) no melting point (Tm (°C)) is observed in DSC or, when any Tm is observed then the Tm and the fusion endothermic calorie ΔH (J/g) are in the relationship represented by the following formula ΔH ≥ 6 × Tm - 140 .
  2. 2
    A propylene homopolymer satisfying the following requirements (1) to (3):(1) the amount of the components which are dissolved out at 25 °C or lower (W25) in a temperature-raising chromatography ranges from 20 to 100 % by weight;(2) the amount of the components which are dissolved out into hexane at 25 °C (H25) ranges from 0 to 80 % by weight;and, (3) no melting point (Tm(°C)) is observed in DSC or, when any Tm is observed then the Tm and the fusion endothermic calorie ΔH (J/g) are in the relationship represented by the following formula: ΔH ≥ 6 × Tm - 140 .
  3. 4
    A method for producing a propylene homopolymer of any one of Claims 1 to 3, wherein propylene is homopolymerized in the presence of a polymerization catalyst comprising:(A) a transition metal compound represented by Formula (I) shown below and (B) a component selected from (B-1) a compound capable of forming an ionic complex by reacting with a transition metal compound as a component (A) or a derivative thereof and (B-2) an aluminoxane, in which M denotes a metal element of Group 3 to Group 10 or of lanthanoids in the periodic table, each of E 1 and E 2 denotes a ligand selected from a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a heterocyclopentadienyl group, a substituted heterocyclopentadienyl group, an amide group, a phosphide group, a hydrocarbon group and a silicon-containing group, is crosslinked with each other via A 1 and A 2 and may be same to or different from each other, X denotes a σ-binding ligand, and, when two or more Xs are present they may be same or different, and each may be crosslinked with other X, E 1 , E 2 or Y;Y denotes a Lewis base, and, when two or more Ys are present they may be same or different, and each may be crosslinked with other Y, E 1 , E 2 or X, each of A 1 and A 2 denotes a divalent crosslinking group having two ligands including a hydrocarbon group having 1 to 20 carbon atoms, a halogen-containing hydrocarbon group having 1 to 20 carbon atoms, a silicon-containing group, a germanium-containing group, a tin-containing group, -O-, -CO-, -S-, -SO 2 -, -Se-, -NR-, -PR-, -P (O) R-, -BR- or -AIR- , wherein R is a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms and a halogen-containing hydrocarbon group having 1 to 20 carbon atoms, and each may be same to or different from each other;q is an integer of 1 to 5 and represents [(valency of M) -2], and r is an integer of 0 to 3.
  4. 5
    A propylenic resin composition obtained by adding a nucleating agent to the propylene homopolymer of any of Claims 1 to 3.
  5. 6
    A molded article obtained by molding the propylene homopolymer or the propylenic resin composition of any of Claims 1 to 3 and 5.
  6. 7
    A propylenic resin modifier comprising the propylene homopolymer of any of Claims 1 to 3.
  7. 8
    A propylene homopolymer satisfying the following requirements (1) to (3):(1) the amount of the components which are dissolved out into hexane at 25 °C (H25) ranges from 0 to 80 % by weight;(2) no melting point (Tm(°C)) is observed in DSC or, when any Tm is observed then the Tm and the fusion endothermic calorie ΔAH (J/g) are in the relationship represented by the following formula: ΔH ≥ 6 × Tm - 140 ;and, (3) the molecular weight distribution (Mw/Mn) determined by a gel permeation chromatography (GPC) ranges from 2.5 to 14.0 and the intrinsic viscosity [η] determined in a decalin solvent at 135 °C ranges from 0.5 to 15.0 dl/g.
  8. 11
    A propylenic resin composition comprising 1 to 99 % by weight of a propylenic polymer [I] and 99 to 1 % by weight of a polyolefin [II] in which said propylenic polymer [1] satisfies the following requirements (1) to (3):(1) the amount of the components which are dissolved out at 25 °C or lower (W25) in a temperature-raising chromatography ranges from 20 to 100 % by weight;(2) the amount of the components which are dissolved out into hexane at 25 °C (H25) ranges from 0 to 80 % by weight;and (3) no melting point (Tm(°C)) is observed in DSC or, when any Tm is observed then the Tm and the fusion endothermic calorie ΔH (J/g) are in the relationship represented by the following formula: ΔH ≥ 6 × Tm - 140 .
  9. 14
    A method for producing the propylenic resin composition of any of Claims 11 to 13 which comprises homopolymerizing propylene or copolymerizing propylene and ethylene and/or an α-olefin having 4 to 20 carbon atoms in the presence of a co-catalyst comprising a metallocene catalyst comprising:(A) a transition metal compound represented by Formula (I) shown below and (B) (B-1) a compound capable of forming an ionic complex by reacting with a transition metal compound as a component (A) or a derivative thereof or (B-2) an aluminoxane and at least one other catalyst, in which M denotes a metal element of Group 3 to Group 10 or of lanthanoids in the periodic table, each of E 1 and E 2 denotes a ligand selected from a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a heterocyclopentadienyl group, a substituted heterocyclopentadienyl group, an amide group, a phosphide group, a hydrocarbon group and a silicon-containing group, is crosslinked with each other via A 1 and A 2 and may be same to or different from each other, X denotes a σ-binding ligand, and, when two or more Xs are present they may be same or different, and each may be crosslinked with other X, E 1 , E 2 or Y;Y denotes a Lewis base, and, when two or more Ys are present they may be same or different, and each may be crosslinked with other Y, E 1 , E 2 or X, each of A 1 and A 2 denotes a divalent crosslinking group having two ligands including a hydrocarbon group having 1 to 20 carbon atoms, a halogen-containing hydrocarbon group having 1 to 20 carbon atoms, a silicon-containing group, a germanium-containing group, a tin containing group, -O-, -CO-, -S-, -SO 2 - -Se-, -NR-, -PR-, -P(O)R-, -BR- or -AIR- , wherein R is a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms and a halogen-containing hydrocarbon group having 1 to 20 carbon atoms, and each may be same to or different from each other;q is an integer of 1 to 5 and represents [(valency of M)-2], and r is an integer of 0 to 3.
  10. 16
    A molded article made from the propylenic resin composition of any of Claims 11 to 13.
Independent claims10