US4220580A
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Bingham fluid compositions
Assignee: Chevron USA Inc
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Filing: 1978-07-24
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Granted: 1980-09-02
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Expires: 1998-07-24
Abstract
Abstract Bingham fluid compositions are provided which contain a functional material such as a polymerization initiator dispersed in a continuous solid phase, which is a mixture of liquid hydrocarbon, a finely-divided olefin polymer, and a small quantity of a siliceous material having a number of hydroxyl groups chemically bonded to silicon atoms. These compositions, while solid at ambient temperature and pressure, assume the flow characteristics of a liquid under a shearing stress and can be pumped to feed the functional material to a polymerization reactor or molten polymer on a continuous basis.
Inventors
- 👤 Robert J. Rowatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:53
CPC Classifications
C; C09; C09K; C09K3/00; B; B01; B01J; B01J8/00; B01J8/0015; C08; C08F; C08F10/00; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J2423/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
151 words
A polymerization-initiating, polymerization-controlling or polymerization-modifying Bingham fluid composition suitable for continuous direct addition to a continuous olefin polymerization reaction system, said composition being a solid at ambient temperature and capable of flow under an applied pressure, said composition consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of a liquid hydrocarbon, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) at least one functional material uniformly dispersed throughout the continuous solid phase of (a); said functional material being a polymerization initiator or a telogenating agent.
Claim 2
Dependent Claim
151 words
A polymerization-initiating, polymerization-controlling or polymerization-modifying Bingham fluid composition suitable for continuous direct addition to a continuous olefin polymerization reaction system, said composition being a solid at ambient temperature and capable of flow under an applied pressure, said composition consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of a liquid hydrocarbon, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) at least one functional material uniformly dispersed throughout the continuous solid phase of (a); said functional material being a polymerization initiator or a telogenating agent.
Claim 3
Dependent Claim
49 words
A composition of claim 1 in which the continuous solid phase of (a) consists essentially of 100 parts by weight of the liquid hydrocarbon, about 10 to 200 parts by weight of the finely-divided olefin polymer, and about 0.5 to 5 parts by weight of the finely-divided siliceous material.
Claim 4
Dependent Claim
19 words
A composition of claim 1 or 2 in which the siliceous material is prepared by burning an organosilicon compound.
Claim 5
Dependent Claim
15 words
A composition of claim 1 or 2 in which the siliceous material is diatomaceous earth.
Claim 6
Dependent Claim
28 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is a solid at ambient temperature.
Claim 7
Dependent Claim
32 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is a catalyst for the polymerization of a polymerizable olefin.
Claim 8
Dependent Claim
26 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is a chromium compound.
Claim 9
Dependent Claim
60 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is the reaction product of a salt of a transition metal of Group IV-B, V-B, or VI-B of the Periodic Table and an organometallic compound of a metal of Group II-A, II-B, or III-A of the Periodic Table.
Claim 10
Dependent Claim
34 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is the reaction product of a titanium chloride and an aluminum alkyl.
Claim 11
Dependent Claim
29 words
A composition of claim 1 or 2 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is a free radical generating polymerization initiator.
Claim 12
Dependent Claim
148 words
A polymer-modifying Bingham fluid composition suitable for continuous direct addition to a molten polymer stream, said composition being a solid at ambient temperature and capable of flow under an applied pressure, said composition consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of a liquid hydrocarbon, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) at least one functional material uniformly dispersed throughout the continuous solid phase of (a); said functional material being an antioxidant, a slip agent or an antistat agent.
Claim 13
Dependent Claim
148 words
A polymer-modifying Bingham fluid composition suitable for continuous direct addition to a molten polymer stream, said composition being a solid at ambient temperature and capable of flow under an applied pressure, said composition consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of a liquid hydrocarbon, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) at least one functional material uniformly dispersed throughout the continuous solid phase of (a); said functional material being an antioxidant, a slip agent or an antistat agent.
Claim 14
Dependent Claim
49 words
A composition of claim 11 in which the continuous solid phase of (a) consists essentially of 100 parts by weight of the liquid hydrocarbon, about 10 to 200 parts by weight of the finely-divided olefin polymer, and about 0.5 to 5 parts by weight of the finely-divided siliceous material.
Claim 15
Dependent Claim
19 words
A composition of claim 11 or 12 in which the siliceous material is prepared by burning an organosilicon compound.
Claim 16
Dependent Claim
15 words
A composition of claim 11 or 12 in which the siliceous material is diatomaceous earth.
Claim 17
Dependent Claim
26 words
A composition of claim 11 in which the functional material of (b) dispersed throughout the continuous solid phase of (a) is a solid at ambient temperature.
Claim 18
Dependent Claim
17 words
A composition of claim 11 in which at least one of the functional materials is an antioxidant.
Claim 19
Dependent Claim
18 words
A composition of claim 11 in which at least one of the functional materials is a slip agent.
Claim 20
Dependent Claim
118 words
An ethylene polymerization initiating Bingham fluid composition which is a solid at subambient temperatures but which will flow under an applied pressure consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of ethylene, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) an ethylene polymerization initiator uniformly dispersed throughout the continuous phase.
Claim 21
Dependent Claim
118 words
An ethylene polymerization initiating Bingham fluid composition which is a solid at subambient temperatures but which will flow under an applied pressure consisting essentially of: (a) a continuous solid phase consisting essentially of an intimate mixture of: (i) 100 parts by weight of ethylene, (ii) 2 to 250 parts by weight of a finely-divided olefin polymer, and (iii) a minor amount of at least 0.2 part by weight of a finely-divided siliceous material having at least one dimension smaller than about 0.01 micron, said siliceous material having a number of hydroxyl groups attached to silicon atoms and having an oxygen/silicon ratio of at least about 2.1/1.0, and (b) an ethylene polymerization initiator uniformly dispersed throughout the continuous phase.
Claim 22
Dependent Claim
75 words
In a continuous high pressure process for the mass polymerization of ethylene in which ethylene and a free radical generating polymerization initiator are fed continuously to a polymerization zone operating at an elevated temperature and at a pressure of at least about 1,000 atmospheres; the improvement which consists essentially of feeding the polymerization initiator to the polymerization zone on a continuous basis by pumping a Bingham fluid composition of claim 1 into the polymerization zone.
Claim 23
Dependent Claim
79 words
In a continuous process for the polymerization of a polymerizable olefin in a liquid hydrocarbon medium in which olefin monomer is continuously added to the polymerization zone, finely-divided solid polymerization catalyst is added to the polymerization zone, and the polymerization product is continuously withdrawn from the reaction zone; the improvement which consists essentially of feeding the polymerization catalyst to the reaction zone on a continuous basis by pumping a Bingham fluid composition of claim 1 into the reaction zone.
Claim 24
Dependent Claim
61 words
In a process for the catalytic polymerization of a polymerizable olefin in the vapor phase in the presence of solid polymerization catalyst particles in a moving bed of particles of the polymerized olefin; the improvement which consists essentially of feeding the solid polymerization catalyst particles to the polymerization zone by pumping a Bingham fluid of claim 1 into the polymerization zone.
References Cited (Backward Citations)
US3492231A
Cited
US4046945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |