JPS57190006A - Preparation of propylene polymer - Google Patents
Preparation of propylene polymerInfo
- Publication number
- JPS57190006A JPS57190006A JP7550781A JP7550781A JPS57190006A JP S57190006 A JPS57190006 A JP S57190006A JP 7550781 A JP7550781 A JP 7550781A JP 7550781 A JP7550781 A JP 7550781A JP S57190006 A JPS57190006 A JP S57190006A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- intrinsic viscosity
- propylene
- prepared
- solid component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Graft Or Block Polymers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To prepare the titled polymer having high heat resistance, impact resistance and moldability, by the two-step polymerization of a polymer having a specific intrinsic viscosity and a polymer having higher intrinsic viscosity than the above polymer at a specific ratio using a catalyst composed of a Ti-containing solid component, an organic Al compound, etc.
CONSTITUTION: Propylene or propylene and other α-olefins are polymerized using a catalyst system composed mainly of a titanium-containing solid component and an organic aluminum compound in two steps comprising the first step wherein a propylene homopolymer or a propylene-α-olefin copolymer having an intrinsic viscosity[η]of 0.6W1.7dl/g is prepared in an amount exceeding 40wt% and less than 70wt%, and the second step wherein a (co)polymer having an intrinsic viscosity[η]of 1.5W4.5dl/g and ≥1.5 times that of the polymer obtained by the first step is prepared in an amount exceeding 30wt% and less than 60wt%. The intrinsic viscosity[η]of the whole polymer is 1W2dl/g.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7550781A JPS57190006A (en) | 1981-05-19 | 1981-05-19 | Preparation of propylene polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7550781A JPS57190006A (en) | 1981-05-19 | 1981-05-19 | Preparation of propylene polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57190006A true JPS57190006A (en) | 1982-11-22 |
JPH0326203B2 JPH0326203B2 (en) | 1991-04-10 |
Family
ID=13578217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7550781A Granted JPS57190006A (en) | 1981-05-19 | 1981-05-19 | Preparation of propylene polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57190006A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58219207A (en) * | 1982-06-15 | 1983-12-20 | Chisso Corp | Polypropylene having high rigidity and melt viscoelasticity and preparation thereof |
JPS60195109A (en) * | 1984-03-19 | 1985-10-03 | Mitsui Toatsu Chem Inc | Polypropylene resin composition for high-fluidity injection molding |
US4950720A (en) * | 1988-04-29 | 1990-08-21 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making and article made from the same |
US4970280A (en) * | 1987-04-01 | 1990-11-13 | Chisso Corporation | Continuous process for producing high molten viscoelastic polypropylene or ethylene-propylene copolymer |
US4981938A (en) * | 1987-02-04 | 1991-01-01 | Chisso Corporation | Highly crystalline polypropylene |
US5140062A (en) * | 1987-04-01 | 1992-08-18 | Chisso Corporation | Continuous process for producing high molten viscoelastic polypropylene of ethylene-propylene copolymer |
-
1981
- 1981-05-19 JP JP7550781A patent/JPS57190006A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58219207A (en) * | 1982-06-15 | 1983-12-20 | Chisso Corp | Polypropylene having high rigidity and melt viscoelasticity and preparation thereof |
JPS60195109A (en) * | 1984-03-19 | 1985-10-03 | Mitsui Toatsu Chem Inc | Polypropylene resin composition for high-fluidity injection molding |
JPH041761B2 (en) * | 1984-03-19 | 1992-01-14 | Mitsui Toatsu Chemicals | |
US4981938A (en) * | 1987-02-04 | 1991-01-01 | Chisso Corporation | Highly crystalline polypropylene |
US4970280A (en) * | 1987-04-01 | 1990-11-13 | Chisso Corporation | Continuous process for producing high molten viscoelastic polypropylene or ethylene-propylene copolymer |
US5140062A (en) * | 1987-04-01 | 1992-08-18 | Chisso Corporation | Continuous process for producing high molten viscoelastic polypropylene of ethylene-propylene copolymer |
US4950720A (en) * | 1988-04-29 | 1990-08-21 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making and article made from the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0326203B2 (en) | 1991-04-10 |
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