Claims
- 1. A flexible propylene resin, which comprises:
- (x) 10 to 90 weight % of boiling heptane soluble polypropylene having an intrinsic viscosity of not less than 1.2 dl/g, and
- (y) 90 to 10 weight % of boiling heptane insoluble crystalline isotactic polypropylene having an intrinsic viscosity of 0.5 to 9.0 dl/g,
- said resin having a pentad fraction (rrrr/(1-mmmm)), measured by .sup.13 C-NMR, expressed as a percentage, of not less than 20%, and a domain structure which is observed by a transmission type electron microscope, all intrinsic viscosities being measured in a decaline solution at 135.degree. C.
- 2. The flexible propylene resin according to claim 1, wherein said boiling heptane soluble polypropylene has an intrinsic viscosity of not less than 1.5 dl/g.
- 3. The flexible propylene resin according to claim 1, wherein said boiling heptane insoluble polypropylene has an intrinsic viscosity of 1.0 to 6.0 dl/g.
- 4. The flexible propylene resin according to claim 1, wherein said resin includes said boiling heptane soluble polypropylene in an amount of 25 to 70 weight % and said boiling heptane insoluble polypropylene in an amount of 30 to 75 weight %.
- 5. The flexible propylene resin according to claim 1, wherein said boiling heptane soluble polypropylene consists of homopolymers.
- 6. The flexible propylene resin according to claim 1, having an elongation at break of not less than 300%; a fracture stress of not less than 100 kg/cm.sup.2 ; and a tensile elasticity of not more than 8000 kg/cm.sup.2, when measured at a testing speed of 50 mm/min. at 23.degree. C.
- 7. The flexible propylene resin according to claim 1, wherein said propylene resin is formed by polymerization in the presence of a catalyst system containing:
- (A) a solid component including (a) crystalline polyolefin and (b) a solid catalyst component consisting of magnesium, titanium, a halogen atom and an electron donor;
- (B) an organoaluminum compound;
- (C) an alkoxy group-containing aromatic compound represented by the general formula: ##STR4## wherein R.sup.1 is a C.sub.1-20 alkyl group; R.sup.2 is a C.sub.1-10 hydrocarbon group, a hydroxy group or a nitro group; m is an integer of 1 to 6; and n is 0 or an integer of 1 to (6-m); and
- (D) an electron donative compound.
- 8. The flexible propylene resin according to claim 7, wherein said polymerization is a non-solvent polymerization.
- 9. The flexible propylene resin according to claim 7, wherein said solid catalyst component consists of Mg(OET).sub.2, TiCl.sub.4, and di-n-butyl phthalate.
- 10. The flexible propylene resin according to claim 7, wherein said organoaluminum compound is AlEt.sub.3.
- 11. The flexible propylene resin according to claim 7, wherein said alkoxy group-containing aromatic compound is 1-allyl-3,4-dimethoxybenzene.
- 12. The flexible propylene resin according to claim 7, wherein said electron donative compound is diphenyldimethoxysilane.
Priority Claims (3)
Number |
Date |
Country |
Kind |
1-308573 |
Nov 1989 |
JPX |
|
1-307519 |
Nov 1989 |
JPX |
|
2-29266 |
Feb 1990 |
JPX |
|
Parent Case Info
This application is a Divisional application of application Ser. No. 08/991,536, filed Dec. 16, 1997, U.S. Pat. No. 6,001,933 which is a Continution-in-Part application of application Ser. No. 08/450,711, filed May 25, 1995, now abandoned the contents of which are incorporated herein by reference in their entirety, which is a Continuation application of application Ser. No. 08/105,127, filed Aug. 12, 1993, now abandoned which application is a Divisional application of application Ser. No. 07/730,807, filed Jul. 26, 1991, now abandoned which was filed as PCT International Application No. PCT/JP90/01216 on Sep. 21, 1990.
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Non-Patent Literature Citations (4)
Entry |
Lieberman, "Olefin Polymers (Polypropylene)", Kirk-Othmer Encyclopedia of Chemical Technology, 4.sup.th Ed., vol. 17, John Wiley & Sones, NY, p. 787 (1995). |
Database WPI, Section Ch, Week 8846, Derwent Publications Ltd., London, GB; Class A17, AN 88-327834, Oct. 1988. |
Polymer Bulletin 29, 199-203 (1992), Effect of 1-allyl-3,4-dimethoxybenzene on propene polymerization with the TiCl.sub.4 /DBP (dibutylphthalate)MgCl.sub.2 catalyst. |
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Divisions (2)
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Number |
Date |
Country |
Parent |
991536 |
Dec 1997 |
|
Parent |
730807 |
Jul 1991 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
105127 |
Aug 1993 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
450711 |
May 1993 |
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