Patent US4444967A successfully refreshed from Google Patents.
US4444967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substantially agglomeration-free catalyst component
Assignee: Akzo America Inc
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Filing: 1983-03-21
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Granted: 1984-04-24
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Expires: 2003-03-21
Abstract
Abstract A substantially agglomeration-free, finely divided catalyst component which is suitable for use as a cocatalyst with organoaluminum compounds in the polymerization of alpha olefins, which is formed by grinding a titanium trichloride material, an effective amount of an electron pair donor compound to enhance the performance of said catalyst component, and an effective amount for agglomeration control of an agglomeration control agent. The agglomeration control agent is effective in either reducing the attractive forces between the finely divided particles in the catalyst component or by preventing the close approach of these particles which would result in agglomeration.
Inventors
- 👤 Gregory G. Arzoumanidis
- 👤 Richard F. Gold
- 👤 Christian G. Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:11
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
138 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a dialkyl phosphoric acid of the formula (RO) 2 P(O)OH where R is a C 1 -C 6 alkyl group for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 2
Dependent Claim
138 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a dialkyl phosphoric acid of the formula (RO) 2 P(O)OH where R is a C 1 -C 6 alkyl group for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the dialkyl phosphoric acid is diisoamyl phosphoric acid.
Claim 4
Dependent Claim
154 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the sterrospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a reaction product of a compound of the formula (C 6 H 5 ) 2 Si(OH) 2 , and a titanate of the formula (TiOR) 4 where R is a C 1 -C 4 alkyl group for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 5
Dependent Claim
154 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the sterrospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a reaction product of a compound of the formula (C 6 H 5 ) 2 Si(OH) 2 , and a titanate of the formula (TiOR) 4 where R is a C 1 -C 4 alkyl group for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 6
Dependent Claim
120 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst and component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising starch for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 7
Dependent Claim
120 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst and component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising starch for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 8
Dependent Claim
128 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst and component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomerization-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a C 2 -C 4 alkylene diamine tetracetic acid for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 9
Dependent Claim
128 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst and component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomerization-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a C 2 -C 4 alkylene diamine tetracetic acid for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 10
Dependent Claim
20 words
The process of claim 5 wherein the C 2 -C 4 alkylene diamine tetraacetic acid is ethylene diamine tetraacetic acid.
Claim 11
Dependent Claim
123 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a water soluble cellulosic ether for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 12
Dependent Claim
123 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a water soluble cellulosic ether for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 13
Dependent Claim
24 words
The process of claim 7 wherein the water soluble cellulosic ether is selected from the group consisting of methyl cellulose and sodium carboxymethyl cellulose.
Claim 14
Dependent Claim
136 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a compound selected from the group consisting of phthalocyanine, copper phthalocyanine, chlorinated copper phthalocyanine and sulfonated copper phthalocyanine for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 15
Dependent Claim
136 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound comprising a compound selected from the group consisting of phthalocyanine, copper phthalocyanine, chlorinated copper phthalocyanine and sulfonated copper phthalocyanine for substantially preventing agglomeration in the catalyst component, wherein the above agglomeration control compound is a polarizable compound which when attached to particles in the composition hinders contact of the said particles.
Claim 16
Dependent Claim
124 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity or stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound for substantially preventing agglomeration in the catalyst component, wherein the agglomeration control compound is the water-soluble ammonium salt of an amido polyphosphonate formed by the dry vapor phase reaction of P 2 O 5 with anhydrous ammonia.
Claim 17
Dependent Claim
124 words
A process for polymerizing alpha-olefins in the presence of a catalyst comprising an (1) alkyl aluminum compound and (2) a catalyst component of the type formed by grinding a titanium trichloride material with an effective amount of an electron donor compound for improving the stereospecificity or stereospecificity and activity of the catalyst component wherein said component has a tendency to agglomerate, the improvement comprising making an essentially agglomeration-free finely divided component by performing said grinding in the presence of an effective amount of an agglomeration control compound for substantially preventing agglomeration in the catalyst component, wherein the agglomeration control compound is the water-soluble ammonium salt of an amido polyphosphonate formed by the dry vapor phase reaction of P 2 O 5 with anhydrous ammonia.
Claim 18
Dependent Claim
18 words
The process of claim 10 wherein the titanium trichloride material is formed by reducing titanium tetrachloride with aluminum.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |