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US4945142A Expired / Lapsed US ⏱️ 0.0 years remaining

Composition and process for friction loss reduction

Assignee: ConocoPhillips Co
•
Filing: 1988-11-14
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Granted: 1990-07-31
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Expires: 2008-11-14
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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.

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

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