Patent US4855154A successfully refreshed from Google Patents.
US4855154A
Expired / Lapsed
US
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Process for deodorizing marine oils
Assignee: Katalistiks International Inc
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Filing: 1988-06-14
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Granted: 1989-08-08
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Expires: 2008-06-14
Abstract
Abstract Marine oils are deodorized by contact with an effective amount of crystalline siliceous molecular sieves having strongly organophilic properties and pore diameters of at least 5.5 Angstroms. The molecular sieves selectively adsorb odorous organic amines and other odor-producing molecular species, such as aldehydes and ketones, without alteration of the essential unsaturated fatty acid triglycerides.
Inventors
- 👤 Anthony J. Gioffre
- 👤 Bonita K. Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
157 words
Process for removing an existing odor from a marine oil due to the presence of isovaleric acid or at least one organic amine molecular species which comprises contacting said marine oil and adsorbing said isovaleric acid or organic amine molecular species at a temperature within the range of -20° C. to 200° C. with a crystalline siliceous molecular sieve sorbent which has been at least partially activated, in which at least about 90 percent of the framework tetrahedral oxide units are SiO 2 tetrahedra, which has pore diameters of at least 5.5 Angstroms and has a capacity for adsorbed water of not greater than 10 weight percent when measured at 25° C. and at a water's vapor pressure of 4.6 torr, said contacting and adsorbing of said isovaleric acid or organic molecular species being to such a degree than residual amine concentrations thereof over the adsorbent are below the detection threshold of the human sense of smell.
Claim 2
Dependent Claim
157 words
Process for removing an existing odor from a marine oil due to the presence of isovaleric acid or at least one organic amine molecular species which comprises contacting said marine oil and adsorbing said isovaleric acid or organic amine molecular species at a temperature within the range of -20° C. to 200° C. with a crystalline siliceous molecular sieve sorbent which has been at least partially activated, in which at least about 90 percent of the framework tetrahedral oxide units are SiO 2 tetrahedra, which has pore diameters of at least 5.5 Angstroms and has a capacity for adsorbed water of not greater than 10 weight percent when measured at 25° C. and at a water's vapor pressure of 4.6 torr, said contacting and adsorbing of said isovaleric acid or organic molecular species being to such a degree than residual amine concentrations thereof over the adsorbent are below the detection threshold of the human sense of smell.
Claim 3
Dependent Claim
23 words
Process according to claim 1 wherein the crystalline siliceous molecular sieve contains less than 0.2 weight percent alkali metal on an anhydrous basis.
Claim 4
Dependent Claim
24 words
Process according to claim 1 wherein the crystalline siliceous molecular sieve has a capacity for adsorbed water of not greater than 6 weight percent.
Claim 5
Dependent Claim
14 words
Process according to claim 3 wherein the siliceous molecular sieve is a silica polymorph.
Claim 6
Dependent Claim
28 words
Process according to claim 1 wherein the crystalline siliceous molecular sieve is an aluminosilicate having a framework SiO 2 /Al 2 O 2 molar ratio greater than 35.
Claim 7
Dependent Claim
23 words
Process according to claim 5 wherein the aluminosilicate has a SiO 2 /Al 2 O 2 molar ratio of from 200 to 500.
Claim 8
Dependent Claim
35 words
Process according to claim 1 wherein the siliceous molecular sieve comprises a mixture of a silica polymorph and an aluminosilicate having a framework SiO 2 /Al 2 O 2 ratio of from 200 to 500.
Claim 9
Dependent Claim
35 words
Process according to claim 1 wherein the organic molecular species has a vapor pressure at 23° C. of greater than 1 mm. Hg and which when added to liquid water lowers the surface tension thereof.
Claim 10
Dependent Claim
12 words
Process according to claim 1 wherein the marine oil is fish oil.
Claim 11
Dependent Claim
12 words
Process according to claim 1 wherein the marine oil is liver oil.
Claim 12
Dependent Claim
14 words
Process according to claim 1 wherein the organic amine molecular species is an alkylamine.
Claim 13
Dependent Claim
10 words
Process according to claim 11 wherein the alkylamine is trimethylamine.
Claim 14
Dependent Claim
19 words
Process according to claim 1 wherein the existing order is odor is due to the presence of isovaleric acid.
Claim 15
Dependent Claim
15 words
Process according to claim 1 wherein the temperature range is 10° C. to 100° C.
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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) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |