US4762918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorization of glycosides
Assignee: Henkel AG and Co KGaA
•
Filing: 1984-11-21
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Granted: 1988-08-09
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Expires: 2004-11-21
Abstract
Abstract The catalytic hydrogenation of a glycoside composition to reduce the color of the composition is disclosed.
Inventors
- 👤 Robert S. McDaniel, Jr.
- 👤 Patrick M. McCurry
- 👤 Rolland W. P. Short
- 👤 Paul R. Glor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:19
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
77 words
A process for reducing the color of a glycoside composition, which process comprises contacting a glycoside composition containing colored humins having conjugated unsaturation with a hydrogenation catalyst in the presence of hydrogen at a temperature of about 10 to 250° C. at a pressure of about 101 to 10,000 KPa for a sufficient time to decrease the color thereof and thereafter separating the hydrogenation catalyst from the glycoside composition and recovering the glycoside composition of reduced color.
Claim 2
Dependent Claim
77 words
A process for reducing the color of a glycoside composition, which process comprises contacting a glycoside composition containing colored humins having conjugated unsaturation with a hydrogenation catalyst in the presence of hydrogen at a temperature of about 10 to 250° C. at a pressure of about 101 to 10,000 KPa for a sufficient time to decrease the color thereof and thereafter separating the hydrogenation catalyst from the glycoside composition and recovering the glycoside composition of reduced color.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the degree of polymerization (D.P.) of the glycoside is from about 1 to about 10.
Claim 4
Dependent Claim
32 words
The process of claim 1 wherein the glycoside is selected from the group consisting of a fructoside, glucoside, mannoside, galactoside, taloside, aldoside, altroside, idoside, arabinoside, xyloside, lyxoside, and riboside and mixtures thereof.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein in the glycoside is an alkyl glycoside.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein the glycoside is present in the composition on a dry solids basis during hydrogenation at from about 10% to about 75% by weight.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein the hydrogenation catalyst is employed as a homogeneous catalyst.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein the hydrogenation catalyst is supported.
Claim 9
Dependent Claim
11 words
The process of claim 3 wherein the glycoside is a glucoside.
Claim 10
Dependent Claim
13 words
the process of claim 1 wherein the hydrogenation catalyst is based on nickel.
Claim 11
Dependent Claim
13 words
The process of claim 1 wherein the hydrogenation catalyst is based on platinum.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein the hydrogenation catalyst is based on palladium.
Claim 13
Dependent Claim
13 words
The process of claim 10 wherein the hydrogenation catalyst is a Raney-type nickel.
Claim 14
Dependent Claim
21 words
The process of claim 4 wherein the glycoside contains from about 1 to about 30 carbon atoms in the alkyl radical.
Claim 15
Dependent Claim
22 words
The process of claim 5 wherein the glycoside is present in the composition at from about 20% to about 60% by weight.
Claim 16
Dependent Claim
13 words
The process of claim 1 wherein the hydrogenation catalyst is a promoted catalyst.
Claim 17
Dependent Claim
43 words
The process of claim 15 wherein the promotor of the promoted catalyst is selected from the group consisting of molybdenum, chromium, osmium, iron, rhodium, cobalt, copper, silicon, platinum, aluminum, silver, manganese, lead, tin, yttrium, lanthanum, rare earth metals and cerium and mixtures thereof.
Claim 18
Dependent Claim
26 words
The process of claim 1 wherein during hydrogenation the glycoside composition is dispersed in a solvent selected from the group consisting of polar and non-polar solvents.
Claim 19
Dependent Claim
15 words
The process of claim 1 wherein the hydrogenation catalyst is employed in a fixed bed.
Claim 20
Dependent Claim
15 words
The process of claim 1 wherein the hydrogenation catalyst is employed as a heterogeneous catalyst.
Claim 21
Dependent Claim
10 words
The process of claim 17 wherein the solvent is water.
Claim 22
Dependent Claim
12 words
The process of claim 17 wherein the solvent is a fatty alcohol.
Claim 23
Dependent Claim
40 words
The process of claim 1 wherein the hydrogenation catalyst is selected from the group consisting of molybdenum, chromium, osmium, iron, rhodium, cobalt, copper, silicon, platinum, aluminum, silver, manganese, lead, tin, yttrium, lanthanum, and rare earth and cerium and mixtures thereof.
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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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |