US4104243A
Expired / Lapsed
US
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Method of preparing low viscosity/inorganic filler
Assignee: EIDP Inc
•
Filing: 1975-06-02
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Granted: 1978-08-01
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Expires: 1995-06-02
Abstract
Abstract Described is a process for preparing low viscosity inorganic filler dispersions which comprises dispersing a large amount of finely divided inorganic filler compound as a slurry in a hydrocarbon diluent at all times in the presence of certain organoaluminum compounds. This process is particularly useful for preparing dispersions used in the preparation of polyolefin/inorganic filler compositions, especially polyolefin/inorganic filler compositions prepared in the presence of a catalytic transition metal compound.
Inventors
- 👤 Edward G. Howard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:30
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
97 words
The method of preparing a high solids dispersion of finely divided inorganic filler compound in a liquid hydrocarbon diluent under low viscosity conditions which comprises (a) mixing the hydrocarbon diluent with 0.01-2% by weight, based on the inorganic filler compound, of an organoaluminum compound selected from the group consisting of trialkylaluminums, trialkylaluminum hydrides, dialkylalumunimun alkoxides, alkylaluminum halides and polymeric hydrocarbylaluminums in which the alkyl groups, alike or different, contain 1-10 carbon atoms, and (b) dispersing at least 9 weight/volume percent of the inorganic filler compound as a slurry in the mixture of hydrocarbon diluent and organoaluminum compound.
Claim 2
Independent Claim
97 words
The method of preparing a high solids dispersion of finely divided inorganic filler compound in a liquid hydrocarbon diluent under low viscosity conditions which comprises (a) mixing the hydrocarbon diluent with 0.01-2% by weight, based on the inorganic filler compound, of an organoaluminum compound selected from the group consisting of trialkylaluminums, trialkylaluminum hydrides, dialkylalumunimun alkoxides, alkylaluminum halides and polymeric hydrocarbylaluminums in which the alkyl groups, alike or different, contain 1-10 carbon atoms, and (b) dispersing at least 9 weight/volume percent of the inorganic filler compound as a slurry in the mixture of hydrocarbon diluent and organoaluminum compound.
Claim 3
Dependent Claim
25 words
The method of claim 1 in which the organoaluminum compound is selected from the group consisting of trialkylaluminums, dialkylaluminum hydrides, dialkylaluminum alkoxides and dialkylaluminum halides.
Claim 4
Dependent Claim
25 words
The method of claim 1 in which the finely divided inorganic filler compound has a weight-average equivalent spherical particle diameter of less than 100 μ.
Claim 5
Dependent Claim
21 words
The method of claim 3 in which the dispersion contains at least 15 weight/volume percent of finely divided inorganic filler compound.
Claim 6
Dependent Claim
31 words
The method of claim 4 in which the organoaluminum compound is an alkylaluminum compound and is present in the amount of 0.05 to 1% by weight based on the filler compound.
Claim 7
Dependent Claim
16 words
The method of claim 5 in which the hydrocarbon diluent has 5 to 8 carbon atoms.
Claim 8
Dependent Claim
25 words
The method of claim 6 in which the finely divided inorganic filler compound has a weight-average equivalent spherical particle diameter of less than 50 μ.
Claim 9
Dependent Claim
21 words
The method of claim 7 in which the dispersion contains at least 20 weight/volume percent of finely divided inorgaic filler compound.
Claim 10
Dependent Claim
17 words
The method of claim 8 in which the finely divided inorganic filler compound is aluminum silicate clay.
Claim 11
Dependent Claim
16 words
The method of claim 8 in which the finely divided inorganic filler compound is alumina trihydrate.
Claim 12
Dependent Claim
14 words
The method of claim 8 in which the alkylaluminum compound is a dialkylaluminum hydride.
Claim 13
Dependent Claim
13 words
The method of claim 8 in which the alkylaluminum compound is a trialkylaluminum.
Claim 14
Independent Claim
161 words
A method of preparing a polyolefin in the presence of a high solids dispersion of finely divided inorganic filler compound in a liquid hydrocarbon diluent under los viscosity conditions which comprises (a) mixing the hydrocarbon diluent with 0.01-2% by weight, based on the inorganic filler compound, of an organoaluminum compound selected from the group consisting of trialkylaluminums, dialkylalkylaluminum hydrides, dialkylaluminum alkoxides, alkylaluminum halides and polymeric hydrocarbylaluminums in which the alkyl groups, alike or different, contain 1-10 carbon atoms, (b) dispersing at least 9 weight/volume percent of the inorganic filler compound as a slurry in the mixture of hydrocarbon diluent and organoaluminum compound, said dispersion containing a transition metal compound component of a coordination polymerization catalyst system, (c) adding to the dispersion an olefin selected from the group consisting of 1-alkenes of 2- 10 carbon atoms and mixtures thereof with agitation at a temperature from 0° to 250° C and a pressure from atmospheric to 500 atmospheres, and (d) isolating the product.
Claim 15
Independent Claim
161 words
A method of preparing a polyolefin in the presence of a high solids dispersion of finely divided inorganic filler compound in a liquid hydrocarbon diluent under los viscosity conditions which comprises (a) mixing the hydrocarbon diluent with 0.01-2% by weight, based on the inorganic filler compound, of an organoaluminum compound selected from the group consisting of trialkylaluminums, dialkylalkylaluminum hydrides, dialkylaluminum alkoxides, alkylaluminum halides and polymeric hydrocarbylaluminums in which the alkyl groups, alike or different, contain 1-10 carbon atoms, (b) dispersing at least 9 weight/volume percent of the inorganic filler compound as a slurry in the mixture of hydrocarbon diluent and organoaluminum compound, said dispersion containing a transition metal compound component of a coordination polymerization catalyst system, (c) adding to the dispersion an olefin selected from the group consisting of 1-alkenes of 2- 10 carbon atoms and mixtures thereof with agitation at a temperature from 0° to 250° C and a pressure from atmospheric to 500 atmospheres, and (d) isolating the product.
Claim 16
Dependent Claim
25 words
The method of claim 13 in which the organoaluminum compound is selected from the group consisting of trialkylaluminums, dialkylaluminum hydrides, dialkylaluminum alkoxides and dialkylaluminum halides.
Claim 17
Dependent Claim
42 words
The method of claim 13 in which the transition metal compound is interacted at the surface of the finely divided inorganic filler compound in an amount sufficient to provide 0.01 to 2% by weight of transition metal based on the filler compound.
Claim 18
Dependent Claim
25 words
The method of claim 15 in which the finely divided inorganic filler compound has a weight-average equivalent spherical particle diameter of less than 100 μ.
Claim 19
Dependent Claim
31 words
The method of claim 16 in which the organoaluminum compound is an alkylaluminum compound and is present in the amount of 0.05 to 1% by weight based on the filler compound.
Claim 20
Dependent Claim
17 words
The method of claim 17 in which the finely divided inorganic filler compound is aluminum silicate clay.
Claim 21
Dependent Claim
16 words
The method of claim 17 in which the finely divided inorganic filler compound is alumina trihydrate.
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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) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |