US5369196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production process of olefin based polymers
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1991-11-29
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Granted: 1994-11-29
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Expires: 2011-11-29
Abstract
Abstract A process for effectively producing an alpha-olefin homopolymer or copolymer of two or more of alpha-olefins without using a great amount of an aluminum compound, is disclosed. In the process for producing a cyclic olefin based polymer according to the present invention, homopolymerization of an alpha-olefin or copolymerization of two or more of alpha-olefins is effected in the presence of a catalyst comprising, as main ingredients, the following Compounds (A), (B) and (C): (A) a transition metal compound; (B) a compound capable of forming an ionic complex when reacted with a transition metal compound; and (C) an organoaluminum compound.
Inventors
- 👤 Junichi Matsumoto
- 👤 Takuji Okamoto
- 👤 Masami Watanabe
- 👤 Nobuhide Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:55
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/02; C08F110/04; C08F110/06; C08F110/14; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61908; C08F4/61912; C08F4/6192; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A process for producing an olefin based polymer in which polymerization of one or more alpha-olefins of formula (XIII) R.sup.13 --CH═CH.sub.2 wherein R 13 is a hydrogen atom or an alkyl group having from 1 to 28 carbon atoms, is carried out in the presence of a catalyst comprising the compounds (A) and (B): (A) a transition metal compound (A1) represented by the following formula: M.sup.1 R.sup.1 aR.sup.2 bR.sup.3 cR.sup.4 d wherein M 1 is Ti, Zr or Hf, R 1 , R 2 , R 3 and R 4 are each independently hydrogen, oxygen, halogen, C 1-20 alkyl, C 1-20 alkoxy, C 6-20 aryl, C 6-20 aryloxy, alkylaryl, arylalkyl, C 1-20 acyloxy, allyl, trialkylsilyl, ether, thioether, ester, nitrile, amine, phosphine or acetylacetonate; a, b, c and d are each independently an integer of from 0 to 4; and two or more of R 1 , R 2 , R 3 and R 4 may form a ring; and (B) a compound capable of forming an ionic complex when reacted with said transition metal compound.
Claim 2
Dependent Claim
175 words
A process for producing an olefin based polymer in which polymerization of one or more alpha-olefins of formula (XIII) R.sup.13 --CH═CH.sub.2 wherein R 13 is a hydrogen atom or an alkyl group having from 1 to 28 carbon atoms, is carried out in the presence of a catalyst comprising the compounds (A) and (B): (A) a transition metal compound (A1) represented by the following formula: M.sup.1 R.sup.1 aR.sup.2 bR.sup.3 cR.sup.4 d wherein M 1 is Ti, Zr or Hf, R 1 , R 2 , R 3 and R 4 are each independently hydrogen, oxygen, halogen, C 1-20 alkyl, C 1-20 alkoxy, C 6-20 aryl, C 6-20 aryloxy, alkylaryl, arylalkyl, C 1-20 acyloxy, allyl, trialkylsilyl, ether, thioether, ester, nitrile, amine, phosphine or acetylacetonate; a, b, c and d are each independently an integer of from 0 to 4; and two or more of R 1 , R 2 , R 3 and R 4 may form a ring; and (B) a compound capable of forming an ionic complex when reacted with said transition metal compound.
Claim 3
Dependent Claim
15 words
The process of claim 1, wherein said catalyst further comprises compound (C) an organoaluminum compound.
Claim 4
Dependent Claim
36 words
The process according to claim 2, wherein said organoaluminum compound (C) is a member selected from the group consisting of organoaluminum compounds containing at least one alkyl group having at least three carbon atoms and aluminoxanes.
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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) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |