Patent US5219982A successfully refreshed from Google Patents.
US5219982A
Expired / Lapsed
US
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Process for copolymerizing co/olefin
Assignee: Shell USA Inc
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Filing: 1992-03-30
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Granted: 1993-06-15
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Expires: 2012-03-30
Abstract
Abstract An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises (1) contacting carbon monoxide and ethylenically unsaturated hydrocarbon monomers in a reactor under polymerization conditions in the presence of a liquid reaction diluent and a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, (2) removing a portion of the resulting suspension of polymer in reaction diluent from the reactor, passing a part of that portion from the reactor system and passing the remainder of the portion through means for applying mechanical shear and back to the reactor, and (3) removing unreacted monomers from the gas cap in the reactor, mixing the removed unreacted monomers with carbon monoxide and ethylenically unsaturated hydrocarbon and passing the mixture through the means for applying mechanical shear and back to the reactor.
Inventors
- 👤 Paulus D. Buijsingh
- 👤 Izaak Lindhout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:25
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2455; B01J19/2465; B01J19/26; C; C08; C08G; C08G67/00; C08G67/02; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00103; B01J2219/00105; B01J2219/00108; B01J2219/0011
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
160 words
A process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon which comprises: (1) contacting carbon monoxide and at least one ethylenically unsaturated hydrocarbon monomer in a reactor system under polymerization conditions in the presence of a liquid reaction diluent and a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, (2) removing a portion of the resulting polymer suspension in reaction diluent from the reactor, passing a part of that portion from the reactor system as product and passing the remainder of the portion back to the reactor through a means for applying mechanical shear, and (3) removing unreacted monomers from a gas cap within the reactor, mixing the unreacted monomers with carbon monoxide and ethylenically unsaturated hydrocarbon and passing the mixture through the means for applying mechanical shear together with the polymer suspension and back to the reactor.
Claim 2
Dependent Claim
160 words
A process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon which comprises: (1) contacting carbon monoxide and at least one ethylenically unsaturated hydrocarbon monomer in a reactor system under polymerization conditions in the presence of a liquid reaction diluent and a catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a bidentate ligand of phosphorus, (2) removing a portion of the resulting polymer suspension in reaction diluent from the reactor, passing a part of that portion from the reactor system as product and passing the remainder of the portion back to the reactor through a means for applying mechanical shear, and (3) removing unreacted monomers from a gas cap within the reactor, mixing the unreacted monomers with carbon monoxide and ethylenically unsaturated hydrocarbon and passing the mixture through the means for applying mechanical shear together with the polymer suspension and back to the reactor.
Claim 3
Dependent Claim
33 words
The process of claim 1 wherein concentration of the polymer suspension removed from the reactor, passed through the mechanical shear means and back to the reactor is less than about 60% by weight.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein power transmitted to the polymer suspension by the mechanical shear means is from about 0.25 kw/m 3 of polymer suspension.
Claim 5
Dependent Claim
14 words
The process of claim 3 wherein the mechanical shear means is an injector-mixing nozzle.
Claim 6
Dependent Claim
12 words
The process of claim 3 wherein the ethylenically unsaturated hydrocarbon is ethylene.
Claim 7
Dependent Claim
33 words
The process of claim 5 wherein the catalyst composition is formed from a compound of palladium, an anion of a non-hydrohalogenic acid having a pKa below 2 and a bidentate ligand of phosphorus.
Claim 8
Dependent Claim
13 words
The process of claim 6 wherein the compound of palladium is palladium acetate.
Claim 9
Dependent Claim
17 words
The process of claim 7 wherein the anion is the anion of trifluoroacetic acid or p-toluenesulfonic acid.
Claim 10
Dependent Claim
57 words
The process of claim 8 wherein the bidentate ligand of phosphorus is represented by the formula ##STR3## wherein R independently is aliphatic or aromatic of up to 10 carbon atoms inclusive and R, is a divalent hydrocarbon linking group of up to 10 carbon atoms inclusive with from 2 to 4 carbon atoms in the phosphorus-phosphorus bridge.
Claim 11
Dependent Claim
38 words
The process of claim 9 wherein R is substituted hydrocarbyl aromatic with at least one polar group substituted on a ring carbon atom ortho to the ring carbon atom through which the group is bound to the phosphorus.
Claim 12
Dependent Claim
13 words
The process of claim 10 wherein the bidentate ligand of phosphorus is 1,3-bis[di(2-methoxyphenyl)phosphino]propane.
Claim 13
Dependent Claim
17 words
The process of claim 3 wherein the at least one ethylenically unsaturated hydrocarbon is ethylene and propylene.
Claim 14
Dependent Claim
24 words
The process of claim 12 wherein the catalyst composition is formed from palladium acetate, the anion of trifluoroacetic acid or p-toluenesulfonic acid and 1,3-bis[di(2-methoxyphenyl)phosphino]propane.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |