Patent US5051484A successfully refreshed from Google Patents.
US5051484A
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Process for producing granular thermoplastic elastomer and granular elastomer
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1989-12-04
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Granted: 1991-09-24
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Expires: 2009-12-04
Abstract
Abstract A solid catalyst component for α-olefin polymerization containing as catalyst components at least titanium, magnesium and chlorine which are impregnated into an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 μm and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 Å, a catalyst system comprising at least said solid catalyst component (A) and an organoaluminum compound (B), as well as a process for producing α-olefin polymers using said catalyst system.
Inventors
- 👤 Toshio Sasaki
- 👤 Takeshi Ebara
- 👤 Hiroyuki Kora
- 👤 Kiyoshi Kawai
- 👤 Mituharu Yamasaki
- 👤 Syozo Kawamata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:09
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/901; Y10S526/904; Y10S526/908
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A process for producing a granular thermoplastic elastomer and a granular elastomer which comprises polymerizing an α-olefin or copolymerizing α-olefins by the use of a catalyst system comprising a solid catalyst component (A) containing a transition metal composition made from a titanium compound represented by the general formula Ti(OR 1 ) a X b , wherein R 1 represents a hydrocarbon residue having 1 to 20 carbon atoms, X represents halogen and a and b represent numbers satisfying 0≦a≦4, 0≦b≦4, and a+b=3 or 4, and a magnesium compound selected from Grignard compounds, dialkyl- or diaryl-magnesium compounds, which are impregnated into an organic porous polymer carrier selected from the group consisting of polystyrene, polyacrylicester, polyacrylonitrile, polyvinylchloride and polyolefin of porous polymer beads having a mean particle diameter of 5 to 1,000 μm and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 Å and an organoaluminum compound (B).
Claim 2
Dependent Claim
154 words
A process for producing a granular thermoplastic elastomer and a granular elastomer which comprises polymerizing an α-olefin or copolymerizing α-olefins by the use of a catalyst system comprising a solid catalyst component (A) containing a transition metal composition made from a titanium compound represented by the general formula Ti(OR 1 ) a X b , wherein R 1 represents a hydrocarbon residue having 1 to 20 carbon atoms, X represents halogen and a and b represent numbers satisfying 0≦a≦4, 0≦b≦4, and a+b=3 or 4, and a magnesium compound selected from Grignard compounds, dialkyl- or diaryl-magnesium compounds, which are impregnated into an organic porous polymer carrier selected from the group consisting of polystyrene, polyacrylicester, polyacrylonitrile, polyvinylchloride and polyolefin of porous polymer beads having a mean particle diameter of 5 to 1,000 μm and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 Å and an organoaluminum compound (B).
Claim 3
Dependent Claim
106 words
A process according to claim 1, wherein the process comprises two steps, a first step comprising preparing an isotactic polypropylene by a polymerization reaction in liquefied propylene and/or in gas phase, followed by a second step, which comprises preparing an ethylene-α-olefin random copolymer in gas phase so that the ethylene content in the copolymer formed in the second step comes to 5 to 95% by weight and its intrinsic viscosity in tetralin at 135° C. comes to 0.3 to 10 and the weight of the copolymer formed in the second step comes to 60 to 97% by weight based on the total weight of the polymers.
Claim 4
Dependent Claim
115 words
A process according to claim 1, wherein the process comprises two steps, a first step comprising polymerizing ethylene in a slurry state in a propane solvent or a butane solvent or polymerizing ethylene in gas phase, followed by a second step, which comprises preparing an ethylene-α-olefin random copolymer by a polymerization reaction in gas phase so that the ethylene content in the copolymer formed in the second step comes to 5 to 95% by weight and its intrinsic viscosity in tetralin at 135° C. comes to 0.3 to 10 and the weight of the copolymer formed in the second step comes to 60 to 97% by weight based on the total weight of the polymers.
Claim 5
Dependent Claim
53 words
A process according to claim 1, wherein the process comprises carrying out a random copolymerization of ethylene and α-olefin in gas phase so that the ethylene content in the copolymer thus formed comes to 5 to 95% by weight and its intrinsic viscosity in tetralin at 135° C. comes to 0.3 to 10.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the catalyst system further contains an electron donor (C).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |