Patent US5387567A successfully refreshed from Google Patents.
US5387567A
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Catalyst components for polymerization of olefins
Assignee: Japan Polyolefins Co Ltd
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Filing: 1992-06-26
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Granted: 1995-02-07
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Expires: 2012-06-26
Abstract
Abstract A catalyst component is disclosed for use in the homo-or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me1(OR1)pR2qX14-p-q and a second compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing high molecular weight, wide distribution thereof and other desirable qualities in the polymer product.
Inventors
- 👤 Yoshio Tajima
- 👤 Naoki Kataoka
- 👤 Yosuke Numao
- 👤 Takashi Seki
- 👤 Kazuo Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F110/00; C08F110/02; C08F210/00; C08F210/16; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65904; C08F4/65912; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
A catalyst component for use in the polymerization of olefinic hydrocarbons, said catalyst component comprising a compound (A) of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q wherein R 1 and R 2 each are hydrocarbon moieties of 1-24 carbon atoms; X 1 is a halogen atom; Me 1 is Ti, Zr or Hf; 0≦p≦4; 0≦q≦4; and 0≦p+q≦4; and an organosilicon compound (B) of the formula (Cp).sub.L SiR.sub.4-L wherein Cp is a cyclic hydrocarbon having two or more conjugated double bonds and a total carbon number of 4-24; R is a hydrocarbon moiety of 1-24 carbon atoms; and 1≦L≦4.
Claim 2
Dependent Claim
97 words
A catalyst component for use in the polymerization of olefinic hydrocarbons, said catalyst component comprising a compound (A) of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q wherein R 1 and R 2 each are hydrocarbon moieties of 1-24 carbon atoms; X 1 is a halogen atom; Me 1 is Ti, Zr or Hf; 0≦p≦4; 0≦q≦4; and 0≦p+q≦4; and an organosilicon compound (B) of the formula (Cp).sub.L SiR.sub.4-L wherein Cp is a cyclic hydrocarbon having two or more conjugated double bonds and a total carbon number of 4-24; R is a hydrocarbon moiety of 1-24 carbon atoms; and 1≦L≦4.
Claim 3
Dependent Claim
28 words
A catalyst component as claimed in claim 1 wherein said R 1 and R 2 each are selected from the group of alkyl, alkenyl, aryl and aralkyl groups.
Claim 4
Dependent Claim
27 words
A catalyst component as claimed in claim 1 wherein said compound (A) is one selected from the group consisting of tetramethylzirconium, tetraethylzirconium, tetrabenzylzirconium, tetraethoxyzirconium, tetraisopropoxyzirconium and tetra-n-butoxyzirconium.
Claim 5
Dependent Claim
22 words
A catalyst component as claimed in claim 1 wherein said compounds (A) and (B) are blended in a molar ratio of 1:0.1-100.
Claim 6
Dependent Claim
14 words
A catalyst component as claimed in claim 1 wherein said Me 1 is Zr.
Claim 7
Dependent Claim
14 words
A catalyst component as claimed in claim 1 wherein said Me 1 is Ti.
Claim 8
Dependent Claim
14 words
A catalyst component as claimed in claim 1 wherein said Me 1 is Hf.
Claim 9
Dependent Claim
18 words
A catalyst component as claimed in claim 1 wherein R is a hydrocarbon moiety having 1-12 carbon atoms.
Claim 10
Dependent Claim
10 words
A catalyst component as claimed in claim 1 wherein 1≦L≦3.
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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) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |