US4306093A
Expired / Lapsed
US
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Strontium catalyzed alkoxylations
Assignee: Vista Chemical Co
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Filing: 1980-01-24
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Granted: 1981-12-15
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Expires: 2000-01-24
Abstract
Abstract Strontium-containing materials catalyze the alkoxylation of alcohols. Strontium produced alkoxylates have sharper alkoxylate distributions, lower free alcohols, lower pour points, and better detergency than alkoxylates obtained from alkali base catalysis.
Inventors
- 👤 Kang Yang
- 👤 Gerald L. Nield
- 👤 Paul H. Washecheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/02; C07C41/03; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2651
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A method for the alkoxylation of alkanols comprising contacting said alkanols with a suitable alkoxylating material in the presence of a strontium-containing catalyst system comprising at least one material selected from the group consisting of strontium metal, strontium hydride, strontium oxide, strontium hydroxide, and hydrated strontium hydroxide, wherein said contacting is carried out for a sufficient time for reaction to occur to the extent desired, said reaction carried out at temperatures of from about 90° C. to about 260° C.
Claim 2
Independent Claim
80 words
A method for the alkoxylation of alkanols comprising contacting said alkanols with a suitable alkoxylating material in the presence of a strontium-containing catalyst system comprising at least one material selected from the group consisting of strontium metal, strontium hydride, strontium oxide, strontium hydroxide, and hydrated strontium hydroxide, wherein said contacting is carried out for a sufficient time for reaction to occur to the extent desired, said reaction carried out at temperatures of from about 90° C. to about 260° C.
Claim 3
Dependent Claim
19 words
A method as described in claim 1 wherein the alkoxylation is carried out using ethylene oxide or propylene oxide.
Claim 4
Dependent Claim
25 words
A method as described in claim 2 wherein the catalyst is selected from the group consisting of strontium metal, strontium hydride, or mixtures of these.
Claim 5
Dependent Claim
20 words
A method as described in claim 3 wherein the reaction is carried out at pressures up to about 100 psig.
Claim 6
Dependent Claim
30 words
A method as described in claim 4 wherein the ethylene oxide/propylene oxide adduct mole ratios are from about 30 weight percent to about 80 weight percent of the reaction product.
Claim 7
Dependent Claim
31 words
A method as described in claim 5 wherein the strontium catalyst is present in amounts of from about 0.15 to about 5% by weight based on the alkanol to be reacted.
Claim 8
Dependent Claim
17 words
A method as described in claim 6 wherein the alkanol is the product of a hydroformylation/hydrogenation reaction.
Claim 9
Dependent Claim
23 words
A method as described in claim 6 wherein the alkanol is a primary alkanol containing from about 4 to about 36 carbon atoms.
Claim 10
Dependent Claim
14 words
A method as described in claim 1 when carried out in a continuous fashion.
Claim 11
Dependent Claim
38 words
A method as described in claim 2 wherein the catalyst is selected from the group consisting of strontium oxide, strontium hydroxide, and hydrated strontium hydroxide, and the reaction temperature is from about 170° C. to about 200° C.
Claim 12
Dependent Claim
20 words
A method as described in claim 10 wherein the reaction is carried out at pressures up to about 100 psig.
Claim 13
Dependent Claim
30 words
A method as described in claim 11 wherein the ethylene oxide/propylene oxide adduct mole ratios are from about 30 weight percent to about 80 weight percent of the reaction product.
Claim 14
Dependent Claim
31 words
A method as described in claim 12 wherein the strontium catalyst is present in amounts of from about 0.15 to about 5% by weight based on the alkanol to be reacted.
Claim 15
Dependent Claim
21 words
A method as described in claim 13 wherein the alkanol is a primary alcohol containing from 4 to 36 carbon atoms.
Claim 16
Dependent Claim
17 words
A method as described in claim 13 wherein the alkanol is a product of the hydroformylation/hydrogenation reaction.
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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |