US3984388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process to prepare polyketones
Assignee: Shell USA Inc
•
Filing: 1975-06-02
•
Granted: 1976-10-05
•
Expires: 1995-06-02
Abstract
Abstract Interpolymers of carbon monoxide and alpha-olefins are prepared under substantial anhydrous conditions by employing a solvent selected from the group consisting of hexafluoroisopropanol and meta-cresol and a catalyst selected from the group consisting of nickel (II) cyanide, specified tetracyanonickelate (II) salts, and mixtures thereof.
Inventors
- 👤 Thomas Michael Shryne
- 👤 Howard V. Holler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:27
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
184 words
A process for preparing high molecular weight, linear interpolymers of carbon monoxide with at least one alpha-olefin having from two to eight carbon atoms which comprises reacting under substantially anhydrous conditions carbon monoxide with from about 1 to about 30 moles of alpha-olefin per mole of carbon monoxide at a temperature from about 75°C to about 150°C and a pressure of from about 10 to about 1,000 atmospheres in the presence of a solvent selected from the group consisting of hexafluoroisopropanol and meta-cresol and in the presence of from about 0.005 to about 50% by weight based on monomer charged of catalyst consisting essentially of a compound selected from the group consisting of anhydrous nickel (II) cyanide, complex nickel salts comprising a tetracyanonickelate (II) anion and a cation selected from the group consisting of R 4 N + , R 4 P + , R 3 S + and R 4 As + wherein R is an alkyl, aryl or cycloalkyl group of from about 3 to about 10 carbon atoms, and mixtures of said anhydrous nickel (II) cyanide and said complex nickel salt.
Claim 2
Dependent Claim
184 words
A process for preparing high molecular weight, linear interpolymers of carbon monoxide with at least one alpha-olefin having from two to eight carbon atoms which comprises reacting under substantially anhydrous conditions carbon monoxide with from about 1 to about 30 moles of alpha-olefin per mole of carbon monoxide at a temperature from about 75°C to about 150°C and a pressure of from about 10 to about 1,000 atmospheres in the presence of a solvent selected from the group consisting of hexafluoroisopropanol and meta-cresol and in the presence of from about 0.005 to about 50% by weight based on monomer charged of catalyst consisting essentially of a compound selected from the group consisting of anhydrous nickel (II) cyanide, complex nickel salts comprising a tetracyanonickelate (II) anion and a cation selected from the group consisting of R 4 N + , R 4 P + , R 3 S + and R 4 As + wherein R is an alkyl, aryl or cycloalkyl group of from about 3 to about 10 carbon atoms, and mixtures of said anhydrous nickel (II) cyanide and said complex nickel salt.
Claim 3
Dependent Claim
11 words
A process according to claim 1 wherein said alpha-olefin is ethylene.
Claim 4
Dependent Claim
20 words
A process according to claim 2 wherein said catalyst is a complex nickel salt and wherein the solvent is hexafluoroisopropanol.
Claim 5
Dependent Claim
18 words
A process according to claim 3 wherein the cation of the complex nickel salt is a tetranormalbutylammonium group.
Claim 6
Dependent Claim
59 words
A process according to claim 3 wherein between about 0.5 and about 2.5 moles of a strong acid per mole of complex nickel salt is employed with said complex nickel salt and wherein the strong acid is selected from the group consisting of para-toluenesulfonic acid, para-phenolsulfonic acid, trifluoroacetic acid, the etherate of boron trifluoride, phosphoric acid, and sulfuric acid.
Claim 7
Dependent Claim
43 words
A process according to claim 4 wherein between about 1.0 and about 2.0 moles of a strong acid per mole of complex nickel salt is employed and wherein the strong acid is selected from the group consisting of para-toluenesulfonic acid and trifluoroacetic acid.
Claim 8
Dependent Claim
38 words
A process according to claim 2 wherein 1 mole of carbon monoxide is reacted with from about 4 to about 10 moles of ethylene at about 100° to about 140°C and about 25 to about 150 atmospheres pressure.
Claim 9
Dependent Claim
15 words
A process according to claim 2 wherein the interpolymer formed has a regular alternating-chain structure.
Claim 10
Dependent Claim
104 words
A process for preparing high molecular weight, linear interpolymers of carbon monoxide with at least one alpha-olefin having from two to eight carbon atoms which comprises reacting under substantially anhydrous conditions carbon monoxide with from about 1 to about 30 moles of alpha-olefin per mole of carbon monoxide at about 75° to about 150°C and about 10 to about 1,000 atmospheres pressure in the presence of a solvent selected from the group consisting of hexafluoroisopropanol, meta-cresol, and cyclohexane and in the presence of from about 0.005 to about 50% by weight based on monomer charged of catalyst consisting essentially of anhydrous nickel (II) cyanide.
Claim 11
Dependent Claim
104 words
A process for preparing high molecular weight, linear interpolymers of carbon monoxide with at least one alpha-olefin having from two to eight carbon atoms which comprises reacting under substantially anhydrous conditions carbon monoxide with from about 1 to about 30 moles of alpha-olefin per mole of carbon monoxide at about 75° to about 150°C and about 10 to about 1,000 atmospheres pressure in the presence of a solvent selected from the group consisting of hexafluoroisopropanol, meta-cresol, and cyclohexane and in the presence of from about 0.005 to about 50% by weight based on monomer charged of catalyst consisting essentially of anhydrous nickel (II) cyanide.
Claim 12
Dependent Claim
11 words
A process according to claim 9 wherein the alpha-olefin is ethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |