US5220077A
Expired / Lapsed
US
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Alkoxylation process
Assignee: Sasol North America Inc
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Filing: 1992-08-19
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Granted: 1993-06-15
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Expires: 2012-08-19
Abstract
Abstract A process for preparing an alkoxylation catalyst in which a catalyst is formed by admixing an alkoxylated alcohol with a calcium or strontium containing compound which is dispersible in the alkoxylated alcohol, an inorganic acid and a titanium alkoxide, the pre-mix optionally being heated to a temperature and for a time sufficient to effect at least partial exchange reaction between the alkoxide groups of the titanium alkoxide and the hydroxyl groups of the alkoxylated alcohol, the pre-mix being used in an alkoxylation process to alkoxylate active hydrogen containing compounds such as alcohols.
Inventors
- 👤 Tonyette S. Sandoval
- 👤 Peter A. Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/02; C07C41/03
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
164 words
A process for the alkoxylation of an alcohol comprising: forming a catalyst pre-mix by admixing an alkoxylated alcohol having the general formula R.sup.1 --O(C.sub.m H.sub.2m --O).sub.n H where R 1 is a hydrocarbon radical containing from about 1 to about 30, carbon atoms, m is 2 to 4 and n is from about 1 to about 20, an alkaline earth metal containing compound selected from the group consisting of calcium compounds, strontium compounds and mixtures thereof and which is at least partially dispersible in said alkoxylated alcohol, an inorganic acid, and a titanium alkoxide having the general formula ##STR2## where R 2 , R 3 , R 4 and R 5 is each a hydrocarbon radical containing from about 1 to about 30 carbon atoms, said alkaline earth containing compound and said alkoxylated alcohol being mixed prior to addition of said titanium alkoxide; and introducing an alcohol reactant and an alkylene oxide under alkoxylation conditions to thereby produce alkoxylated derivatives of said alcohol reactant.
Claim 2
Dependent Claim
164 words
A process for the alkoxylation of an alcohol comprising: forming a catalyst pre-mix by admixing an alkoxylated alcohol having the general formula R.sup.1 --O(C.sub.m H.sub.2m --O).sub.n H where R 1 is a hydrocarbon radical containing from about 1 to about 30, carbon atoms, m is 2 to 4 and n is from about 1 to about 20, an alkaline earth metal containing compound selected from the group consisting of calcium compounds, strontium compounds and mixtures thereof and which is at least partially dispersible in said alkoxylated alcohol, an inorganic acid, and a titanium alkoxide having the general formula ##STR2## where R 2 , R 3 , R 4 and R 5 is each a hydrocarbon radical containing from about 1 to about 30 carbon atoms, said alkaline earth containing compound and said alkoxylated alcohol being mixed prior to addition of said titanium alkoxide; and introducing an alcohol reactant and an alkylene oxide under alkoxylation conditions to thereby produce alkoxylated derivatives of said alcohol reactant.
Claim 3
Dependent Claim
49 words
The process of claim 1 including heating said catalyst pre-mix to a temperature and for a time sufficient to effect at least a partial exchange reaction between the alkoxide groups of said titanium alkoxide and said hydroxyl group of said alkoxylated alcohol and thereby form an active alkoxylation catalyst.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein R 1 is a hydrocarbon radical containing from about 6 to about 14 carbon atoms.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein n is from about 1 to about 12.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein n is from about 1 to about 4.
Claim 7
Dependent Claim
32 words
The process of claim 1 wherein R 2 , R 3 , R 4 , and R 5 is each a hydrocarbon radical containing from about 2 to about 8 carbon atoms.
Claim 8
Dependent Claim
33 words
The process of claim 1 wherein said alkaline earth metal is calcium and said alkaline earth metal containing compound is selected from the group consisting of calcium oxide, calcium hydroxide and mixtures thereof.
Claim 9
Dependent Claim
21 words
The process of claim 1 wherein said inorganic acid is selected from the group consisting of sulfuric acid and hydrochloric acid.
Claim 10
Dependent Claim
35 words
The process of claim 1 wherein the mole ratio of said alkaline earth metal containing compound to said titanium alkoxide is from about 1:1 to about 10:1, calculated as alkaline earth metal and titanium, respectively.
Claim 11
Dependent Claim
31 words
The process of claim 1 wherein the mole ratio of said inorganic acid to said titanium alkoxide is from about 0.25:1 to about 4:1, calculated as acidic hydrogen and titanium, respectively.
Claim 12
Dependent Claim
19 words
The process of claim 2 including removing water from said pre-mix prior to the addition of said titanium alkoxide.
Claim 13
Dependent Claim
12 words
The process of claim 1 wherein said alkylene oxide comprises ethylene oxide.
Claim 14
Dependent Claim
20 words
The process of claim 1 wherein said alcohol is a monohydric aliphatic alcohol containing from 8 to 14 carbon atoms.
References Cited (Backward Citations)
US4775653A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 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 |