US5482908A
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Highly active double metal cyanide catalysts
Assignee: Lyondell Chemical Technology LP
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Filing: 1994-09-08
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Granted: 1996-01-09
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Expires: 2014-09-08
Abstract
Abstract Highly active double metal cyanide (DMC) catalysts are disclosed. The catalysts comprise a DMC complex, and organic complexing agent, and from about 5 to about 80 wt. %, based on the amount of catalyst, of a polyether having a number average molecular weight greater than about 500. A method of preparing the catalysts is also disclosed. The catalysts are easy to prepare, have exceptional activity, and are readily removed, if desired, from polymer products.
Inventors
- 👤 Bi Le-Khac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:16
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2213; B01J27/00; B01J27/24; B01J27/26; B01J31/02; B01J31/0201; B01J31/0202; B01J31/06; B01J31/068; B01J31/165; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2663; C08G65/30; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0205; B01J2531/80; B01J2531/84; B01J2531/845; B01J2531/90; B01J2531/96
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
54 words
A solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said catalyst comprising: (a) a double metal cyanide compound; (b) an organic complexing agent; and (c) from about 5 to about 80 wt. %, based on the amount of catalyst, of a polyether having a number average molecular weight greater than about 500.
Claim 2
Dependent Claim
54 words
A solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said catalyst comprising: (a) a double metal cyanide compound; (b) an organic complexing agent; and (c) from about 5 to about 80 wt. %, based on the amount of catalyst, of a polyether having a number average molecular weight greater than about 500.
Claim 3
Dependent Claim
15 words
The catalyst of claim 1 wherein the double metal cyanide compound is a zinc hexacyanocobaltate.
Claim 4
Dependent Claim
13 words
The catalyst of claim 1 wherein the organic complexing agent is tert-butyl alcohol.
Claim 5
Dependent Claim
27 words
The catalyst of claim 1 wherein the polyether is a polyether polyol having a number average molecular weight within the range of about 1000 to about 10,000.
Claim 6
Dependent Claim
27 words
The catalyst of claim 1 wherein the polyether is a poly(oxypropylene) diol having a number average molecular weight within the range of about 2000 to about 4000.
Claim 7
Dependent Claim
17 words
The catalyst of claim 1 containing from about 10 to about 70 wt. % of the polyether.
Claim 8
Dependent Claim
17 words
The catalyst of claim 1 containing from about 15 to about 60 wt. % of the polyether.
Claim 9
Dependent Claim
57 words
A solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said catalyst comprising: (a) a zinc hexacyanocobaltate compound; (b) tert-butyl alcohol; and (c) from about 10 to about 70 wt. %, based on the amount of catalyst, of a polyether polyol having a number average molecular weight within the range of about 1000 to about 5000.
Claim 10
Dependent Claim
57 words
A solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said catalyst comprising: (a) a zinc hexacyanocobaltate compound; (b) tert-butyl alcohol; and (c) from about 10 to about 70 wt. %, based on the amount of catalyst, of a polyether polyol having a number average molecular weight within the range of about 1000 to about 5000.
Claim 11
Dependent Claim
28 words
The catalyst of claim 8 wherein the polyether polyol is a poly(oxypropylene) diol having a number average molecular weight within the range of about 2000 to about 4000.
Claim 12
Dependent Claim
18 words
The catalyst of claim 8 containing from about 15 to about 60 wt. % of the polyether polyol.
Claim 13
Dependent Claim
37 words
The catalyst of claim 8 having an X-ray diffraction pattern of (d-spacing, angstroms): 5.75 (br), 4.82 (br), 3.76, and exhibits no detectable signals corresponding to highly crystalline zinc hexacyanocobaltate at about (d-spacing, angstroms): 5.07, 3.59, 2.54, 2.28.
Claim 14
Dependent Claim
19 words
The catalyst of claim 8 having a cobalt content within the range of about5 to about 10 wt. %.
Claim 15
Independent Claim
50 words
A method which comprises preparing a solid double metal cyanide (DMC) catalyst in the presence of an organic complexing agent and a polyether having a number average molecular weight greater than about 500, wherein the solid DMC catalyst contains from about 5 to about 80 wt. % of the polyether.
Claim 16
Independent Claim
50 words
A method which comprises preparing a solid double metal cyanide (DMC) catalyst in the presence of an organic complexing agent and a polyether having a number average molecular weight greater than about 500, wherein the solid DMC catalyst contains from about 5 to about 80 wt. % of the polyether.
Claim 17
Dependent Claim
27 words
The method of claim 13 wherein the polyether is a polyether polyol having a number average molecular weight within the range of about 1000 to about 10,000.
Claim 18
Dependent Claim
27 words
The method of claim 13 wherein the polyether is a poly(oxypropylene) diol having a number average molecular weight within the range of about 2000 to about 4000.
Claim 19
Dependent Claim
13 words
The method of claim 13 wherein the DMC catalyst is a zinc hexacyanocobaltate.
Claim 20
Dependent Claim
22 words
The method of claim 14 wherein the DMC catalyst contains from about 15 to about 60 wt. % of the polyether polyol.
Claim 21
Dependent Claim
13 words
The method of claim 13 wherein the organic complexing agent is tert-butyl alcohol.
Claim 22
Independent Claim
134 words
A method of preparing a solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said method comprising: (a) reacting aqueous solutions of a metal salt and a metal cyanide salt, said metal salt being used in excess compared with the amount of metal cyanide salt used, in the presence of an organic complexing agent using efficient mixing to produce a catalyst slurry; (b) combining the catalyst slurry with a polyether having a number average molecular weight greater than about 500; (c) isolating a polyether-containing solid catalyst from the slurry; (d) washing the polyether-containing solid catalyst with an aqueous solution that contains additional organic complexing agent; and (e) recovering a solid DMC catalyst that contains from about 5 to about 80 wt. %, based on the amount of solid DMC catalyst, of the polyether.
Claim 23
Independent Claim
134 words
A method of preparing a solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said method comprising: (a) reacting aqueous solutions of a metal salt and a metal cyanide salt, said metal salt being used in excess compared with the amount of metal cyanide salt used, in the presence of an organic complexing agent using efficient mixing to produce a catalyst slurry; (b) combining the catalyst slurry with a polyether having a number average molecular weight greater than about 500; (c) isolating a polyether-containing solid catalyst from the slurry; (d) washing the polyether-containing solid catalyst with an aqueous solution that contains additional organic complexing agent; and (e) recovering a solid DMC catalyst that contains from about 5 to about 80 wt. %, based on the amount of solid DMC catalyst, of the polyether.
Claim 24
Dependent Claim
15 words
The method of claim 19 wherein the double metal cyanide catalyst is a zinc hexacyanocobaltate.
Claim 25
Dependent Claim
13 words
The method of claim 19 wherein the organic complexing agent is tert-butyl alcohol.
Claim 26
Dependent Claim
27 words
The method of claim 19 wherein the polyether is a polyether polyol having a number average molecular weight within the range of about 1000 to about 10,000.
Claim 27
Dependent Claim
27 words
The method of claim 19 wherein the polyether is a poly(oxypropylene) diol having a number average molecular weight within the range of about 2000 to about 4000.
Claim 28
Dependent Claim
20 words
The method of claim 19 wherein the catalyst slurry is combined with the polyether in step (b) using low-shear mixing.
Claim 29
Dependent Claim
20 words
The method of claim 19 wherein the aqueous solution of organic complexing agent in step (d) also includes additional polyether.
Claim 30
Dependent Claim
22 words
The method of claim 26 wherein, after step (d), the washed polyether-containing solid catalyst is washed again with additional organic complexing agent.
Claim 31
Dependent Claim
26 words
The method of claim 25 wherein, after step (d), the washed polyether-containing solid catalyst is washed again with a mixture of polyether and organic complexing agent.
Claim 32
Independent Claim
139 words
A method of preparing a solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said method comprising: (a) reacting aqueous solutions of a metal salt and a metal cyanide salt, said metal salt being used in excess compared with the amount of metal cyanide salt used, in the presence of an organic complexing agent using efficient mixing to produce a catalyst slurry; (b) efficiently mixing the catalyst slurry with a diluent which comprises an aqueous solution of additional organic complexing agent; (c) combining the catalyst slurry from step (b) with a polyether having a number average molecular weight greater than about 500; (d) isolating a polyether-containing catalyst from the slurry; and (e) recovering a solid DMC catalyst that contains from about 5 to about 80 wt. %, based on the amount of solid DMC catalyst, of the polyether.
Claim 33
Independent Claim
139 words
A method of preparing a solid double metal cyanide (DMC) catalyst useful for epoxide polymerization, said method comprising: (a) reacting aqueous solutions of a metal salt and a metal cyanide salt, said metal salt being used in excess compared with the amount of metal cyanide salt used, in the presence of an organic complexing agent using efficient mixing to produce a catalyst slurry; (b) efficiently mixing the catalyst slurry with a diluent which comprises an aqueous solution of additional organic complexing agent; (c) combining the catalyst slurry from step (b) with a polyether having a number average molecular weight greater than about 500; (d) isolating a polyether-containing catalyst from the slurry; and (e) recovering a solid DMC catalyst that contains from about 5 to about 80 wt. %, based on the amount of solid DMC catalyst, of the polyether.
Claim 34
Dependent Claim
20 words
The method of claim 28 wherein, after step (d), the polyether-containing solid catalyst is washed with additional organic complexing agent.
Claim 35
Dependent Claim
25 words
The method of claim 28 wherein, after step (d), the polyether-containing solid catalyst is washed with a mixture of additional polyether and organic complexing agent.
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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) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |