US4945142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for friction loss reduction
Assignee: ConocoPhillips Co
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Filing: 1988-11-14
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Granted: 1990-07-31
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Expires: 2008-11-14
Abstract
Abstract A catalyst and method is provided for the production of ultra-high molecular weight polymers characterized as having an inherent viscosity of above 12.0 by contacting ethylenically unsaturated monomers with a dual electron donor catalyst under polymerization conditions.
Inventors
- 👤 Donald E. Gessell
- 👤 Donald P. Hosman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:18
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
252 words
A method of preparing an ultra-high molecular weight hydrocarbon soluble polymer having an inherent viscosity greater than 12.0, comprising contacting under polymerization conditioned an ethylenically unsaturated monomer with a catalyst prepared by contacting, under an inert atmosphere, (1) a transition metal halide of the general formula MX t wherein M is titanium or vanadium, and t is equal to 2.5 to 4.0, and x is a halogen with (2) a first electron donor selected from the group consisting of ethers, amines, esters, phosphines, piperdines, phosphites, phosphates, pyridines, sulfides and mixtures of these, and allowing the components to react for a period of at least 3 minutes, then contacting the reaction product of (1) and (2) with (3) a co-catalyst comprising an organoaluminum or organoaluminum halide of the formula AlR n X 3-n , wherein R is a hydrocarbon radical containing from 1 to 20 carbon atoms, X is at least one constituent selected from the group consisting of halogen, siloxide or alkoxide, and n is less than 3, and (4) a polysiloxane of the general formula ##EQU4## wherein R is hydrogen, an alkyl group containing from 1 to 20 carbon atoms, aralkyl or alkaryl group containing from 6 to 20 carbon atoms, a and b are greater than 0, and where the sum (a+b) does not exceed 3.0, and c is 2 or more, and wherein the ethylenically unsaturated monomer is at least 80 percent alpha-olefins, and wherein the resultant polymer formed is formed from alpha-olefins containing at least 4 carbon atoms.
Claim 2
Independent Claim
252 words
A method of preparing an ultra-high molecular weight hydrocarbon soluble polymer having an inherent viscosity greater than 12.0, comprising contacting under polymerization conditioned an ethylenically unsaturated monomer with a catalyst prepared by contacting, under an inert atmosphere, (1) a transition metal halide of the general formula MX t wherein M is titanium or vanadium, and t is equal to 2.5 to 4.0, and x is a halogen with (2) a first electron donor selected from the group consisting of ethers, amines, esters, phosphines, piperdines, phosphites, phosphates, pyridines, sulfides and mixtures of these, and allowing the components to react for a period of at least 3 minutes, then contacting the reaction product of (1) and (2) with (3) a co-catalyst comprising an organoaluminum or organoaluminum halide of the formula AlR n X 3-n , wherein R is a hydrocarbon radical containing from 1 to 20 carbon atoms, X is at least one constituent selected from the group consisting of halogen, siloxide or alkoxide, and n is less than 3, and (4) a polysiloxane of the general formula ##EQU4## wherein R is hydrogen, an alkyl group containing from 1 to 20 carbon atoms, aralkyl or alkaryl group containing from 6 to 20 carbon atoms, a and b are greater than 0, and where the sum (a+b) does not exceed 3.0, and c is 2 or more, and wherein the ethylenically unsaturated monomer is at least 80 percent alpha-olefins, and wherein the resultant polymer formed is formed from alpha-olefins containing at least 4 carbon atoms.
Claim 3
Dependent Claim
32 words
A method as described in claim 1, wherein up to 20 percent of the polymerized alpha-olefins comprise ethylenically unsaturated monomers selected from the group consisting of butadiene, pentadiene, styrene, isoprene, and alphamethylstyrene.
Claim 4
Dependent Claim
33 words
A method as described in claim 2, wherein the olefins polymerized contain at least 1 alpha-olefin selected from the group consisting of ethylene, propylene, butene-1, pentene-1, 4-methylpentene, octene-1, decene-1, hexene-1, octadecene-1, and dodecene-1.
References Cited (Backward Citations)
US965004A
Cited
US3408340A
Cited
US3412174A
Cited
US4098907A
Cited
UST965004I4
Cited
US4229318A
Cited
US4222893A
Cited
US4420593A
Cited
US4358572A
Cited
US4442224A
Cited
US4493904A
Cited
US4450242A
Cited
US4675368A
Cited
US4478952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |