US4171284A
Expired / Lapsed
US
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Catalyst system
Assignee: BP Corp North America Inc
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Filing: 1978-02-27
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Granted: 1979-10-16
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Expires: 1998-02-27
Abstract
Abstract A propylene polymerization catalyst is formed by incorporation into a catalytic mixture, comprising a transition metal compound and an organoaluminum compound, effective amounts of hexavalent sulfur mineral acid or anhydride whereby the amount of n-hexane-soluble polymeric product is decreased.
Inventors
- 👤 Nikolaus K. Balint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:37
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
78 words
A catalyst composition for the polymerization of propylene or mixtures of propylene and copolymerizable alpha-olefins, which produces low amounts of n-hexane-soluble polymer, comprising a titanium trihalide; an organoaluminum compound selected from the group consisting of dialkyl aluminum halide, trialkyl aluminum, a mixture thereof, and a mixture of trialkyl aluminum with alkyl aluminum dihalide; and a hexavalent sulfur mineral acid or anhydride in a molar ratio to titanium trihalide from about 0.005 to 1 to about 0.7 to 1.
Claim 2
Dependent Claim
78 words
A catalyst composition for the polymerization of propylene or mixtures of propylene and copolymerizable alpha-olefins, which produces low amounts of n-hexane-soluble polymer, comprising a titanium trihalide; an organoaluminum compound selected from the group consisting of dialkyl aluminum halide, trialkyl aluminum, a mixture thereof, and a mixture of trialkyl aluminum with alkyl aluminum dihalide; and a hexavalent sulfur mineral acid or anhydride in a molar ratio to titanium trihalide from about 0.005 to 1 to about 0.7 to 1.
Claim 3
Dependent Claim
14 words
The catalyst composition of claim 1 wherein the transition metal compound is titanium trichloride.
Claim 4
Dependent Claim
23 words
The catalyst composition of claim 1 wherein the hexavalent sulfur mineral acid or anhydride is sulfuric acid, oleum, halosulfonic acid or sulfur trioxide.
Claim 5
Dependent Claim
15 words
The catalyst composition of claim 1 wherein the hexavalent sulfur mineral acid is sulfuric acid.
Claim 6
Dependent Claim
13 words
The catalyst composition of claim 1 wherein the hexavalent mineral acid is oleum.
Claim 7
Dependent Claim
14 words
The catalyst composition of claim 1 wherein the hexavalent mineral acid is chlorosulfonic acid.
Claim 8
Dependent Claim
14 words
The catalyst composition of claim 1 wherein the hexavalent mineral anhydride is sulfur trioxide.
Claim 9
Dependent Claim
32 words
The catalyst composition of claim 3 wherein the titanium trihalide is titanium trichloride and the organoaluminum compound is diethylaluminum chloride, triethylaluminum, a mixture thereof or a mixture of triethylaluminum with ethylaluminum dichloride.
Claim 10
Dependent Claim
27 words
The catalyst composition of claim 3 wherein the molar ratio of hexavalent mineral acid to titanium trihalide is about 0.01 to 1 to about 0.7 to 1.
Claim 11
Dependent Claim
26 words
The catalyst composition of claim 4 wherein the molar ratio of sulfuric acid to titanium trihalide is about 0.01 to 1 to about 0.5 to 1.
Claim 12
Dependent Claim
25 words
The catalyst composition of claim 5 wherein the molar ratio of oleum to titanium trihalide is about 0.01 to 1 to about 0.5 to 1.
Claim 13
Dependent Claim
26 words
The catalyst composition of claim 7 wherein the molar ratio of sulfur trioxide to titanium trihalide is about 0.01 to 1 to about 0.5 to 1.
Claim 14
Dependent Claim
26 words
The catalyst composition of claim 6 wherein the molar ratio of chlorosulfonic acid to titanium trihalide is about 0.01 to 1 to about 0.1 to 1.
Claim 15
Dependent Claim
20 words
The catalyst composition of claim 3 wherein the titanium trihalide is titanium trichloride and the organoaluminum compound is diethylaluminum chloride.
Claim 16
Dependent Claim
86 words
A process for forming a catalyst composition for the polymerization of propylene or mixtures of propylene and copolymerizable alpha-olefins, which produces low amounts of n-hexane-soluble polymer, comprising mixing in a suitable medium a titanium trihalide; an organoaluminum compound selected from the group consisting of dialkyl aluminum halide, trialkyl aluminum, mixtures thereof, and a mixture of trialkyl aluminum with alkyl aluminum dihalide; and a hexavalent sulfur mineral acid or anhydride in a molar ratio to titanium trihalide from about 0.005 to 1 to about 0.7 to 1.
Claim 17
Dependent Claim
86 words
A process for forming a catalyst composition for the polymerization of propylene or mixtures of propylene and copolymerizable alpha-olefins, which produces low amounts of n-hexane-soluble polymer, comprising mixing in a suitable medium a titanium trihalide; an organoaluminum compound selected from the group consisting of dialkyl aluminum halide, trialkyl aluminum, mixtures thereof, and a mixture of trialkyl aluminum with alkyl aluminum dihalide; and a hexavalent sulfur mineral acid or anhydride in a molar ratio to titanium trihalide from about 0.005 to 1 to about 0.7 to 1.
Claim 18
Dependent Claim
39 words
The process of claim 15 wherein the hexavalent sulfur mineral acid is added to a solution of organoaluminum compound in an inert hydrocarbon then the resulting mixture is added to a mixture of titanium trihalide in an inert hydrocarbon.
Claim 19
Dependent Claim
19 words
The process of claim 15 wherein the titanium trihalide is titanium trichloride and the organoaluminum compound is diethyl-aluminum chloride.
Claim 20
Dependent Claim
11 words
The process of claim 16 wherein the inert hydrocarbon is n-hexane.
Claim 21
Dependent Claim
13 words
The process of claim 15 wherein the hexavalent mineral acid is sulfuric acid.
Claim 22
Dependent Claim
12 words
The process of claim 15 wherein the hexavalent mineral acid is oleum.
Claim 23
Dependent Claim
13 words
The process of claim 15 wherein the hexavalent mineral anhydride is sulfur trioxide.
Claim 24
Dependent Claim
13 words
The process of claim 15 wherein the hexavalent mineral acid is chlorosulfonic acid.
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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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |