EP0455813A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Flexible polypropylene resin, propylene elastomer composition, and production of olefin polymer
Assignee: Idemitsu Petrochemical Co Ltd
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Filing: 1990-09-21
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Granted: —
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Expires: 2010-09-21
Abstract
Abstract A flexible polypropylene resin suitable as thermoplastic elastomer, etc.; a propylene elastomer composition comprising said resin; and a process for producing an olefin polymer to be used in the production of said resin and said composition. Said polypropylene resin is composed of specified boiling heptane-soluble polypropylene and boiling heptane-insoluble polypropylene. Said elastomer composition is composed of said polypropylene resin and an ethylene/propylene copolymer or an ethylene/propylene/polyene copolymer. Said production process comprises conducting solvent-less polymerization such as vapor-phase one-step or multistep polymerization in the presence of a specified catalyst.
Inventors
- 👤 Masayuki Idemitsu Petrochem. Co. Ltd. Tsuruoka
- 👤 Rikuo Idemitsu Petrochemical Co. Ltd. Onishi
- 👤 Hideo Idemitsu Petrochemical Co. Ltd. Kusuyama
- 👤 Akinobu Idemitsu Petrochem. Co. Ltd. Sugahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08F; C08F10/00; C08F10/04; C08F10/06; C08F297/00; C08F297/06; C08F297/08; C08L23/12; C08L23/16; C08F110/00; C08F110/04; C08F110/06; C08F210/00; C08F210/04; C08F210/06; C08F210/16; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A flexible polypropylene resin comprising: (X) 10 to 90 weight % of boiling heptane soluble polypropylene having a number average molecular weight of not less than 25,000 and a molecular weight distribution (Mw/Mn) of not more than 7; and (Y) 90 to 10 weight % of boiling heptane insoluble polypropylene having a Melt Index of 0.1 to 4 g/10 min.
Claim 2
Dependent Claim
59 words
A flexible polypropylene resin according to Claim 1 which has an elongation at break (T B ) of not less than 400%; a remaining elongation after 100% elongation (PS₁₀₀) of not more than 800%; and a ratio (M B /M Y ) of fracture stress (M B ) to yield stress (M Y ) of not less than 1.0.
Claim 3
Dependent Claim
47 words
A flexible polypropylene resin comprising: (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 polypropylene having an intrinsic viscosity of 0.5 to 9.0 dl/g.
Claim 4
Dependent Claim
46 words
A flexible polypropylene resin according to Claims 3 wherein a pentad fraction (rrrr/1-mmmm), measured by ¹³C-NMR of not less than 20%; a melting peak temperature (Tm) measured by DSC of not less than 150°C; and an enthalpy of melting (ΔH) of not more than 100 J/g.
Claim 5
Dependent Claim
90 words
A propylene based elastomer composition which comprises: (o) 10 to 95 weight % of a polypropylene based polymer comprising 10 to 90 weight % of boiling heptane soluble polypropylene having an intrinsic viscosity of not less than 1.2 dl/g and 90 to 10 weight % of boiling heptane insoluble polypropylene having an intrinsic viscosity of 0.5 to 9.0 dl/g; and (p) 90 to 5 weight % of an ethylene/propylene copolymer having an ethylene unit content of 10 to 60 mol % and an intrinsic viscosity of 0.5 to 7.0 dl/g.
Claim 6
Dependent Claim
94 words
A propylene based elastomer composition which comprises: (o) 10 to 90 weight % of a polypropylene based polymer comprising 10 to 90 weight % of boiling heptane soluble polypropylene having an intrinsic viscosity of not less than 1.2 dl/g and 90 to 10 weight % of boiling heptane insoluble polypropylene having an intrinsic viscosity of 0.5 to 9.0 dl/g; and (p') an ethylene/propylene/polyene copolymer having an ethylene unit content of 10 to 60 mol %, a polyene unit content of 1 to 10 mol %, and an intrinsic viscosity of 0.5 to 7.0 dl/g.
Claim 7
Dependent Claim
42 words
A propylene based elastomer composition according to Claim 5 or 6 which has an elongation at break of not less than 300 %; a fracture stress of not less than 100 Kg/cm²; and a tensile elasity of not more than 8000 Kg/cm².
Claim 8
Dependent Claim
101 words
A non-solvent polymeization process for producing an olefin polymer, which employs a catalyst system comprising: (A) a solid component composed of (A-a) crystalline polyolefin and (A-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: wherein R¹ is a C₁₋₂₀ alkyl group; R² is a C₁₋₁₀ hydrocarbon group, a hydroxyl 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.
References Cited (Backward Citations)
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