US4302613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic catalyst for alkoxylation of alcohols
Assignee: Vista Chemical Co
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Filing: 1980-08-22
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Granted: 1981-11-24
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Expires: 2000-08-22
Abstract
Abstract Strontium and barium-based catalyzed alkoxylation of alcohols of all classes is carried out more rapidly and produces a more peaked reaction product when carried out in the presence of co-catalysts such as calcium oxide, calcium carbide, calcium hydroxide, magnesium metal, magnesium hydroxides, zinc oxide, and aluminum metal.
Inventors
- 👤 Kang Yang
- 👤 Gerald L. Nield
- 👤 Paul H. Washecheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:18
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/02; C07C41/03
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
87 words
A method for the alkoxylation of alcohols containing from about 2 to about 36 carbon atoms, comprising carrying out said alkoxylation by contacting said alcohols with an alkoxylating agent in the presence of basic strontium-containing or barium-containing materials together with an effective amount of an inorganic co-catalyst selected from the group consisting of calcium oxide, calcium carbide, calcium hydroxide, magnesium metal, aluminum metal, zinc oxide, and magnesium hydroxide, and wherein the alkoxylation reaction is carried out at temperatures of from about 120° C. to about 260° C.
Claim 2
Independent Claim
87 words
A method for the alkoxylation of alcohols containing from about 2 to about 36 carbon atoms, comprising carrying out said alkoxylation by contacting said alcohols with an alkoxylating agent in the presence of basic strontium-containing or barium-containing materials together with an effective amount of an inorganic co-catalyst selected from the group consisting of calcium oxide, calcium carbide, calcium hydroxide, magnesium metal, aluminum metal, zinc oxide, and magnesium hydroxide, and wherein the alkoxylation reaction is carried out at temperatures of from about 120° C. to about 260° C.
Claim 3
Dependent Claim
22 words
A method as described in claim 1 wherein the alkoxylation is carried out using ethylene oxide, propylene oxide, or mixtures of these.
Claim 4
Dependent Claim
29 words
A method as described in claim 2 wherein the catalyst is selected from the group consisting of strontium metal, strontium hydride, strontium hydroxide, hydrated strontium hydroxide, or strontium oxide.
Claim 5
Dependent Claim
26 words
A method as described in claim 3 wherein the reaction is carried out at a pressure of up to about 100 pounds per square inch gauge.
Claim 6
Dependent Claim
38 words
A method as described in claim 4 wherein ethylene oxide is used as the alkoxylation agent and a mole adduct ratio ranging from about 30 weight percent to about 80 weight percent of the ethoxylated product is recovered.
Claim 7
Dependent Claim
22 words
A method as described in claim 5 wherein the alcohol is an alkanol containing from about 4 to about 36 carbon atoms.
Claim 8
Dependent Claim
30 words
A method as described in claim 6 wherein the strontium-containing catalyst is present in an amount of at least about 0.1% by weight based upon the alcohol to be reacted.
Claim 9
Dependent Claim
22 words
A method as described in claim 7 wherein the alcohol to be ethoxylated contains from about 4 to about 20 carbon atoms.
Claim 10
Dependent Claim
14 words
A method as described in claim 8 wherein the alcohol is a primary alcohol.
Claim 11
Dependent Claim
17 words
A method as described in claim 8 wherein the alcohol is the product of a hydroformylation/hydrogenation reaction.
Claim 12
Dependent Claim
14 words
A method as described in claim 7 when carried out in a continuous fashion.
Claim 13
Dependent Claim
15 words
A method as described in claim 7 wherein the catalyst is pre-formed prior to alkoxylation.
Claim 14
Dependent Claim
29 words
A method as described in claim 2 wherein the catalyst is selected from the group consisting of barium metal, barium hydride, barium hydroxide, hydrated barium hydroxide, or barium oxide.
Claim 15
Dependent Claim
26 words
A method as described in claim 13 wherein the reaction is carried out at a pressure of up to about 100 pounds per square inch gauge.
Claim 16
Dependent Claim
38 words
A method as described in claim 14 wherein ethylene oxide is used as the alkoxylation agent and a mole adduct ratio ranging from about 30 weight percent to about 80 weight percent of the ethoxylated product is recovered.
Claim 17
Dependent Claim
22 words
A method as described in claim 15 wherein the alcohol is an alkanol containing from about 4 to about 36 carbon atoms.
Claim 18
Dependent Claim
30 words
A method as described in claim 16 wherein the barium-containing catalyst is present in an amount of at least about 0.1% by weight based upon the alcohol to be reacted.
Claim 19
Dependent Claim
22 words
A method as described in claim 17 wherein the alcohol to be ethoxylated contains from about 4 to about 20 carbon atoms.
Claim 20
Dependent Claim
14 words
A method as described in claim 18 wherein the alcohol is a primary alcohol.
Claim 21
Dependent Claim
17 words
A method as described in claim 18 wherein the alcohol is the product of a hydroformylation/hydrogenation reaction.
Claim 22
Dependent Claim
14 words
A method as described in claim 17 when carried out in a continuous fashion.
Claim 23
Dependent Claim
15 words
A method as described in claim 17 wherein the catalyst is pre-formed prior to alkoxylation.
References Cited (Backward Citations)
US4223164A
Cited
US4239917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |