US3687989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the selective hydrogenation of fats and fatty acids
Assignee: Individual
•
Filing: 1969-05-27
•
Granted: 1972-08-29
•
Expires: 1989-05-27
Abstract
Abstract Fats and fatty acids containing diene, triene or polyene fatty acid residues or containing cis monoene residues are hardened or decolorized by hydrogenating them in the presence of a nickel sub sulfide alone or together with molybdenum and/or tungsten sulfides to form a product having a substantial amount of trans monoene residues.
Inventors
- 👤 Josef Baltes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:11
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/12; B; B01; B01J; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/049
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A process according to claim 1 wherein a mixture of a plurality of the sulfides is employed.
Claim 2
Dependent Claim
28 words
A process according to claim 1 wherein 0.05 to 10 parts by weight of said catalyst is employed per 100 parts by weight of fat or fatty acid.
Claim 3
Dependent Claim
27 words
A process according to claim 3 wherein the hydrogenation is carried out at 100* C. to 250* C. at a hydrogen pressure of 1 to 50 kg/cm2.
Claim 4
Dependent Claim
14 words
A process according to claim 4 wherein the catalyst consists of nickel sulfide Ni3S2.
Claim 5
Dependent Claim
73 words
A process according to claim 1 wherein the catalyst is a mixture of nickel subsulfide with a member of the group consisting of molybdenum sulfide and tungsten sulfide, the catalyst is used in an amount of 0.05 to 10 parts by weight per 100 parts by weight of fat or fatty acid and the hydrogenation is carried out at 100* C. to 250* C. at a hydrogen pressure of 1 to 50 kg/cm2.
Claim 6
Dependent Claim
22 words
A precess according to claim 6 wherein the hydrogenation is continued until reaction is substantially complete and a hardened product is obtained.
Claim 7
Dependent Claim
25 words
A process according to claim 6 wherein a colored fat is hydrogenated for a time sufficient to decolorize it but insufficient to completely harden it.
Claim 8
Dependent Claim
29 words
A process according to claim 1 wherein the catalyst is employed for 16 successive batches of said fat or fatty acid to selectively hydrogenate the fat or fatty acid.
Claim 9
Dependent Claim
26 words
A process according to claim 1 wherein the hydrogenation is stopped before there is significant conversion of the monoenes present to saturated fats or fatty acids.
References Cited (Backward Citations)
GB415203A
Cited
US2674634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |