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US4518772A
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Synthesis of higher polyol fatty acid polyesters using high soap:polyol ratios
Assignee: Procter and Gamble Co
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Filing: 1983-06-23
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Granted: 1985-05-21
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Expires: 2003-06-23
Abstract
Abstract An improved solvent-free transesterification process for producing higher polyol fatty acid polyesters is disclosed. In this process a mixture of a polyol, a fatty acid methyl, 2-methoxy ethyl or benzyl ester, an alkali metal fatty acid soap, and a basic catalyst, having a molar ratio of soap:polyol of from about 0.6:1 to about 1:1, preferably from about 0.75:1 to about 1:1, is heated to form a homogeneous melt. To this melt is subsequently added excess fatty acid methyl, 2-methoxy ethyl or benzyl ester, yielding the desired polyol fatty acid polyesters.
Inventors
- 👤 Robert A. Volpenhein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
148 words
In a solvent-free transesterification process for synthesizing higher polyol fatty acid polyesters comprising the steps of: (1) heating a mixture of (a) a polyol selected from a group consisting of monosaccharides, disaccharides and sugar alcohols, (b) a fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof, (c) an alkali metal fatty acid soap, and (d) a basic catalyst, to a temperature of from about 110° C. to about 180° C. at a pressure of from about 0.1 mm to about 760 mm of mercury to form a homogeneous melt; and (2) subsequently adding to the reaction product of step (1) excess fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof; the improvement wherein the molar ratio of soap:polyol in step (1) is from about 0.6:1 to about 1:1.
Claim 2
Dependent Claim
148 words
In a solvent-free transesterification process for synthesizing higher polyol fatty acid polyesters comprising the steps of: (1) heating a mixture of (a) a polyol selected from a group consisting of monosaccharides, disaccharides and sugar alcohols, (b) a fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof, (c) an alkali metal fatty acid soap, and (d) a basic catalyst, to a temperature of from about 110° C. to about 180° C. at a pressure of from about 0.1 mm to about 760 mm of mercury to form a homogeneous melt; and (2) subsequently adding to the reaction product of step (1) excess fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof; the improvement wherein the molar ratio of soap:polyol in step (1) is from about 0.6:1 to about 1:1.
Claim 3
Dependent Claim
19 words
The process according to claim 1 wherein the molar ratio of soap:polyol is from about 0.75:1 to about 1:1.
Claim 4
Dependent Claim
12 words
The process according to claim 2 wherein the polyol is a disaccharide.
Claim 5
Dependent Claim
22 words
The process according to claim 2 wherein the polyol is selected from the group consisting of sucrose, xylitol, sorbitol, and mixtures thereof.
Claim 6
Dependent Claim
16 words
The process according to claim 2 wherein the fatty acid esters are fatty acid methyl esters.
Claim 7
Dependent Claim
33 words
The process according to claim 5 wherein the methyl esters are derived from materials selected from the group consisting of soybean oil, safflower oil, palm oil, sunflower oil, corn oil and mixtures thereof.
Claim 8
Dependent Claim
26 words
The process according to claim 2 wherein the mixture of step (1) is heated to a temperature of from about 130° C. to about 145° C.
Claim 9
Dependent Claim
32 words
The process according to claim 2 wherein the basic catalyst is selected from the group consisting of alkali metals, alloys of alkali metals, alkali metal hydrides, alkali metal alkoxides, and mixtures thereof.
Claim 10
Dependent Claim
66 words
The process according to claim 2 wherein the reaction mixture of step (1) comprises from about 10% to about 50% by weight of the polyol, from about 40% to about 80% by weight of the fatty acid ester, from about 1% to about 30% by weight of the alkali metal fatty acid soap, and from about 0.05% to about 5% by weight of the catalyst component.
Claim 11
Dependent Claim
11 words
The process according to claim 9 wherein the polyol is sucrose.
Claim 12
Dependent Claim
16 words
The process according to claim 10 wherein the fatty acid esters are fatty acid methyl esters.
Claim 13
Dependent Claim
34 words
The process according to claim 11 wherein the methyl esters are derived from a material selected from the group consisting of soybean oil, safflower oil, palm oil, sunflower oil, corn oil, and mixtures thereof.
Claim 14
Dependent Claim
26 words
The process according to claim 12 wherein the mixture of step (1) is heated to a temperature of from about 130° C. to about 145° C.
Claim 15
Dependent Claim
31 words
The process according to claim 13 wherein the catalyst is selected from the group consisting of alkali metals, alloys of alkali metals, alkali metal hydrides, alkali metal alkoxides, and mixtures thereof.
Claim 16
Dependent Claim
55 words
The process according to claim 14 wherein after the addition of the ester in step (2), the reaction mixture is heated to a temperature of from about 120° C. to about 160° C. at a pressure of from about 0.1 mm to about 10 mm of mercury to form the higher polyol fatty acid polyesters.
Claim 17
Dependent Claim
22 words
The process according to claim 14 wherein the molar ratio of soap:polyol in step (1) is from about 0.75:1 to about 0.85:1.
Claim 18
Dependent Claim
18 words
The process according to claim 16 wherein the molar ratio of soap:polyol in step (1) is about 0.75:1.
Claim 19
Dependent Claim
30 words
The process according to claim 9 wherein water is added to the mixture of step (2), said mixture is centrifuged and the higher polyol fatty acid polyesters are separated therefrom.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |