US 6,284,857 B1Granted

Propylene polymer, propylene block copolymer, process for preparing said polymer and said block copolymer, and propylene polymer composition

AssigneeMitsui Chemical, Inc.

InventorsTetsunori Shinozaki, Kazumitsu Kawakita, Mamoru Kioka

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Abstract

Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous propylene units wherein directions of α-methyl carbons are the same as each other), and a process for preparing said polymer. Further disclosed is a propylene polymer composition comprising the above propylene polymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene polymer of the invention is excellent in rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc. The propylene polymer composition of the invention has excellent properties of the propylene polymer or the propylene block copolymer, and moreover is excellent in heat stability during the molding stage, long-term heat stability and weathering resistance. The propylene polymer composition can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc.

Claims6

Dependent claims

A propylene polymer having such properties that:

a melt flow rate (MFR) of said polymer at 230° C. under a load of 2.16 kg is in the range of 0.1 to 500 g/10 min,
a pentad isotacticity M5 obtained from the following formula (1) using absorption intensity Pmmmm and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.970 to 0.995,
a pentad tacticity M3 obtained from the following formula (2) using absorption intensity Pmmrm, Pmrmr, Pmrrr, Prmrr, Prmmr, Prrrr and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.0020 to 0.0050, and
a crystallinity of a boiled heptane-insoluble component contained in said polymer is 70 to about 79.3%;
M 5 = Pmmmm Pw ( 1 )
wherein
Pmmmm is absorption intensity of methyl groups present in the third unit among continuous five propylene units which are bonded to each other with meso form, and
Pw is absorption intensity of all methyl groups in a propylene unit;
M 3 = Pmmrm + Pmrmr + Pmrrr + Prmrr + Prmmr + Prrrr Pw ( 2 )
wherein
Pmmrm is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit, and
wherein said propylene polymer contains 10-10,000 ppm of polymer comprising constituent units derived from a compound represented by the following formula (i) or (ii):
wherein X is a cycloalkyl group, an aryl group or
M is carbon or silicon, R1 and R2 are each a hydrocarbon group, and R3 is hydrogen or a hydrocarbon group.

22 more elements

A propylene polymer having such properties that:

a melt flow rate (MFR) of said polymer at 230° C. under a load of 2.16 kg is in the range of 0.1 to 500 g/10 min,
a pentad isotacticity M5 obtained from the following formula (1) using absorption intensity Pmmmm and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.970 to 0.995,
a pentad tacticity M3 obtained from the following formula (2) using absorption intensity Pmmrm, Pmrmr, Pmrrr, Prmrr, Prmmr, Prrrr and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.0020 to 0.0050, and
a crystallinity of a boiled heptane-insoluble component contained in said polymer is 65% to about 79.3%;
M 5 = Pmmmm Pw ( 1 )
wherein
Pmmmm is absorption intensity of methyl groups present in the third unit among continuous five propylene units which are bonded to each other with meso form, and
Pw is absorption intensity of all methyl groups in a propylene unit;
M 3 = Pmmrm + Pmrmr + Pmrrr + Prmrr + Prmmr + Prrrr Pw ( 2 )
wherein
Pmmrm is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit.

19 more elements

A propylene polymer having such properties that:

a melt flow rate (MFR) of said polymer at 230° C. under a load of 2.16 kg is in the range of 12.5 to 300 g/10 min,
a pentad isotacticity M5 obtained from the following formula (1) using absorption intensity Pmmmm and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.970 to 0.995,
a pentad tacticity M3 obtained from the following formula (2) using absorption intensity Pmmrm, Pmrmr, Pmrrr, Prmrr, Prmmr, Prrrr and Pw in a 13C-NMR spectrum of a boiled heptane-insoluble component contained in said polymer is in the range of 0.0020 to 0.0050, and
a crystallinity of a boiled heptane-insoluble component contained in said polymer is 70% to about 79.3%;
M 5 = Pmmmm Pw ( 1 )
wherein
Pmmmm is absorption intensity of methyl groups present in the third unit among continuous five propylene units which are bonded to each other with meso form, and
Pw is absorption intensity of all methyl groups in a propylene unit;
M 3 = Pmmrm + Pmrmr + Pmrrr + Prmrr + Prmmr + Prrrr Pw ( 2 )
wherein
Pmmrm is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Pmrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prmmr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit,
Prrrr is absorption intensity of methyl groups present in the third unit among continuous five propylene units represented by
in which ┘ and ┐ are each a propylene unit, and
wherein said propylene contains 10-10,000 ppm of polymer comprising constituent units derived from a compound represented by the following formula (i) or (ii):
wherein X is a cycloalkyl group, an aryl group or
M is carbon or silicon, R1 and R2 are each a hydrocarbon group, and R3 is hydrogen or a hydrocarbon group.

22 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/351,136Filed 30 Nov 1994 · continuation
Priority: 22 Jul 1993
Granted: 4 Sep 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08F 297/083
Polymerising mono-olefins: the monomers being ethylene or propylene
C08F 110/06
Monomers containing three or four carbon atoms: propene
C08F 297/06
Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type…:…
C08F 10/06
Monomers containing three or four carbon atoms: propene