US 6,162,871 AGranted

Ethylene-.alpha.-olefin copolymer and composition, and film, laminate and electrical insulating material comprising same

AssigneeNippon Petrochemical Co., Ltd.

InventorsHideo Watanabe, Masahiko Sato, Masaaki Ikeda, Takaaki Hattori, Yoshihiro Hatakeyama, Naoki Miwa, Tatsuyuki Kamiya, Hisao Sakuma, Yuka Umeshima

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Abstract

A polyolefin resin composition containing an ethylene-.alpha.-olefin copolymer having: (A) a density d of 0.86 to 0.96 g/cm.sup.3 ; (B) a melt flow rate MFR of 0.01 to 200 g/10 min; (C) a molecular weight distribution Mw/Mn of 1.5 to 4.5; (D) a composition distribution parameter Cb of 1.08 to 2.00; and (E) an orthodichlorobenzene-soluble content X (wt %), at 25.degree. C. a density of d (g/cm.sup.3) and a melt flow rate MFR (wt %) satisfying that: (i) when the density (d) and the melt flow rate MFR satisfy relationship (I): d-0.008.times.logMFR.gtoreq.0.93 (I) the orthodichlorobenzene-soluble content X satisfies relationship (II): X<2.0 (II) (ii) when the density d and the melt flow rate MFR satisfy relationship (III): d-0.008.times.logMFR<0.93 (III) the orthodichlorobenzene-soluble content X satisfies relationship (IV): X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.logMFR).sup.2 +2.0(IV)

Claims13

Dependent claims

A polyolefin resin composition comprising:

not less than 2% by weight of an ethylene-.alpha.-olefin copolymer and not more than 98% by weight of a polyolefin;
wherein said copolymer has:
(A) a density (d) of 0.86 to 0.96 g/cm.sup.3 ;
(B) a melt flow rate (MFR) 0.01 to 200 g/10 min;
(C) a molecular weight distribution (Mw/Mn) of 1.5 to 4.5;
(D) a composition distribution parameter (Cb) of 1.08 to 2.00;
(E) an orthodichlorobenzene-soluble content (X, wt %) at 25.degree. C., a density (d, cm.sup.3) and a melt flow rate (MFR, g/10 min) satisfying that:
(i) when the density (d) and the melt flow rate (MFR) satisfy relationship (I):
d-0.008.times.log MFR24 0.93 (I)
the orthodichlorobenzene-soluble content (X) satisfies relationship (II):
X<2.0 (II)
(ii) when the density (d) and the melt flow rate (MFR) satisfy relationship (III):
d-0.008.times.log MFR<0.93 (III)
the orthodichlorobenzene-soluble content (X) satisfies relationship (IV):
X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.log MFR).sup.2 +2.0 (IV);
wherein said copolymer has an electrical activation energy of not more than 0.4 eV;
and
(F) a number of peaks on an elution temperature-eluted amount curve determined by continuous temperature rising elution fractionation method (TREF) of 2 or more.

15 more elements

A polyolefin resin composition comprising:

not less than 2% by weight of an ethylene-.alpha.-olefin copolymer and not more than 98% by weight of a polyolefin;
wherein said copolymer has:
(A) a density of 0.86 to 0.96 g/cm.sup.3 ;
(B) a melt flow rate (MFR) of 0.01 to 200 g/10 min;
(C) a molecular weight distribution (Mw/Mn) of 1.8 to 3.5;
(D) a composition distribution parameter (Cb) of 1.10 to 2.00;
and
(E) an orthodichlorobenzene-soluble content (X, wt %) at 25.degree. C., a density (d, g/cm.sup.3) and a melt flow rate (MFR, g/10 min) satisfying that:
(i) when the density (d) and the melt flow rate (MFR) satisfy relationship (I):
d-0.008.times.log MFR.gtoreq.0.93 (I)
the orthodichlorobenzene-soluble content (X) satisfies relationship (II):
X<2.0 (II)
(ii) when the density (d) and the melt flow rate (MFR) satisfy relationship (III):
d-0.008.times.log MFR<0.93 (III)
the orthodichlorobenzene-soluble content (X) satisfies relationship (IV):
X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.log MFR).sup.2 +2.0 (IV);
wherein said copolymer is obtained by copolymerization of ethylene and .alpha.-olefin in the presence of a catalyst by contact components (1) to (4) with each other:
(1) a compound represented by Me.sup.1 R.sup.1.sub.p R.sup.2.sub.q (OR.sup.3).sub.r X.sup.1.sub.4-p-q-r, where R.sup.1 and R.sup.3 each independently represent a C.sub.1-24 hydrocarbon group or trialkylsilyl group;
R.sup.2 represents a 2,4-pentanedionate ligand, a dibenzoylmethanate ligand, a benzyolactonate ligand;
X.sup.1 represents a halogen atom;
Me.sup.1 represents Zr, Ti or Hf;
and p, q and r each represents an integer satisfying the relationships 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4, 0.ltoreq.r.ltoreq.4, and 0.ltoreq.(p+q+r).ltoreq.4;
(2) a compound represented by Me.sup.2 R.sup.4.sub.m (OR.sup.3).sub.n X.sup.2.sub.z-m-n, where Me.sup.2 represents Group I, II, or III element;
R.sup.4 and R.sup.5 each independently represent a C.sub.1-24 hydrocarbon group;
X.sup.2 represents a hydrogen atom or a halogen atom, provided that when X.sup.2 represents a hydrogen atom, Me.sup.2 represents a Group III element;
z represents the valence of Me.sup.2 and m and n each represents an integer satisfying the relationships 0.ltoreq.m.ltoreq.z, 0.ltoreq.n.ltoreq.z, 0.ltoreq.(m+n).ltoreq.z;
(3) an organic cyclic compound having two or more conjugated double bonds;
and
(4) at least one compound selected from the group consisting of (a) a modified organic aluminum oxy compound having an Al--O--Al bond and (b) a boron compound wherein said copolymer has a number of peaks on an elution temperature-eluted amount curve determined by continuous temperature rising elution fractionation method (TREF) of 2 or more.

26 more elements

A polyolefin resin composition comprising:

not less than 2% by weight of an ethylene-.alpha.-olefin copolymer and not more than 98% by weight of a polyolefin;
wherein said copolymer has:
(A) a density (d) of 0.86 to 0.96 g/cm.sup.3 ;
(B) a melt flow rate (MFR) of 0.01 to 200 g/10 min;
(C) a molecular weight distribution (Mw/Mn) of 1.5 to 4.5;
(D) a composition distribution parameter (Cb) of 1.08 to 2.00;
(E) an orthodichlorobenzene-soluble content (X, wt %) at 25.degree. C., a density (d, g/cm.sup.3) and a melt flow rate (MFR, g/10 min) satisfying that:
(i) when the density (d) and the melt flow rate (MFR) satisfy relationship (I)
d-0.008.times.log MFR.gtoreq.0.93 (I)
the orthodichlorobenzene-soluble content (X) satisfies relationship (II):
X<2.0 (II)
(ii) when the density (d) and the melt flow rate (MFR) satisfy relationship (III):
d-0.008.times.log MFR<0.93 (III)
the orthodichlorobenzene-soluble content (X) satisfies relationship (IV):
X<9.8.times.10.sup.3 .times.(0.9300-d+0.008.times.log MFR).sup.2 +2.0 (IV);
wherein said copolymer has (G) an electrical activation energy of not more than 0.4 eV;
wherein said copolymer is obtained by copolymerization of ethylene and .alpha.-olefin in the presence of a catalyst obtained by contacting components (1) to (4) with each other:
(1) a compound represented by Me.sup.1 R.sup.1.sub.p R.sup.2.sub.q (OR.sup.3).sub.r X.sup.1.sub.4-p-q-r, where R.sup.1 and R.sup.3 each independently represent a C.sub.1-24 hydrocarbon group or trialkylsilyl group;
R.sup.2 represents a 2,4-pentanedionate ligand, a dibenzoylmethanate ligand, a benzyolactonate ligand;
X.sup.1 represents a halogen atom;
Me.sup.1 represents Zr, Ti or Hf;
and p, q and r each represents an integer satisfying the relationships 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4, 0.ltoreq.r.ltoreq.4, and 0.ltoreq.(p+q+r).ltoreq.4;
(2) a compound represented by Me.sup.2 R.sup.4.sub.m (OR.sup.3).sub.n X.sup.2.sub.z-m-n, where Me.sup.2 represents Group I, II, or III element;
R.sup.4 and R.sup.5 each independently represent a C.sub.1-24 hydrocarbon group;
X.sup.2 represents a hydrogen atom or a halogen atom, provided that when X.sup.2 represents a hydrogen atom, Me.sup.2 represents a Group III element;
z represents the valence of Me.sup.2 and m and n each represents an integer satisfying the relationships 0.ltoreq.m.ltoreq.z, 0.ltoreq.n.ltoreq.z, 0.ltoreq.(m+n).ltoreq.z;
(3) an organic cyclic compound having two or more conjugated double bonds;
and
(4) at least one compound selected from the group consisting of (a) a modified organic aluminum oxy compound having an Al--O--Al bond and (b) a boron;
and
(F) a number of peaks on an elution temperature-eluted amount curve determined by continuous temperature rising elution fractionation method (TREF) of 2 or more.

28 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/166,178Filed 5 Oct 1998 · division
Priority: JP 7-10679728 Mar 1995
Granted: 19 Dec 2000
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

B32B 27/32
Layered products comprising a layer of synthetic resin: comprising polyolefins
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
C08F 210/16
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
C08J 5/18
Manufacture of articles or shaped materials containing macromolecular substances: manufacture of films or sheets