Partially hydrogenated fatty substances with a low content of trans fatty acids

• US 6,265,596 B1
• Filed: 03/04/1999
• Issued: 07/24/2001
• Est. Priority Date: 07/03/1995
• Status: Expired due to Fees

• Current Assignee: POUL Moller Ledelses - OG Ingeniorradgivning APS
• Original Assignee: POUL Moller Ledelses - OG Ingeniorradgivning APS
• Inventors: Härröd, Magnus, Möller, Poul
• Primary Examiner(s): Carr, Deborah D.
• Application Number:
  US09/262,185
• Time in Patent Office: 873 Days
• Field of Search: 554/223
• US Class Current: 554/223
• CPC Class Codes: C11C 3/12 by hydrogenation

Abstract

A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate, such as vegetable, animal or marine oil, said partially hydrogenated substance having a low content of trans fatty acids. When the hydrogenation degree is below 30% the trans-fatty acid concentration can be expressed in the following way: trans≦0.3×(initial IV—IV) in %. of the total amount of fatty acids, wherein IV refers to iodine value. When the hydrogenation degree is between 30 and 70% the trans-fatty acid concentration can be expressed with: trans≦0.09×initial IV in % of the total amount of fatty acids. The partial hydrogenation is performed by a process in which the substrate, hydrogen gas and a solvent are mixed, and the whole mixture is brought into a supercritical or near-critical state. This substantially homogeneous super-critical or near-critical solution is led over the catalyst, whereby the reaction products formed, i.e. the hydrogenated substrates, will also be a part of the substantially homogeneous super-critical or near-critical solution.

Claims

1. A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate having an initial iodine value (initial IV), said partially hydrogenated fatty substance being hydrogenated to a hydrogenation degree of below 30% and having an iodine value (IV), wherein the partially hydrogenated fatty substance has a content of trans fatty acids of no more than 0.3×

(initial IV—

IV) in % of the total amount of fatty acids.

2. A partially hydrogenated fatty substance as claimed in claim 1, wherein the content of trans fatty acids is no more than 0.2×

(initial IV−

IV) in % of the total amount of fatty acids.

3. The partially hydrogenated fatty substance of claim 1, wherein the substrate is vegetable, animal or marine oil.

4. A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate, said partially hydrogenated substance being hydrogenated to a hydrogenation degree of between 30 and 70% and having a content of trans fatty acids of no more than 0.09×

initial IV in % of the total amount of fatty acids.

5. A partially hydrogenated fatty substance as claimed in claim 4, wherein the content of trans fatty acids is no more than 0.05×

initial IV in % of the total amount of fatty acids.

6. The partially hydrogenated fatty substance of claim 4, wherein the substrate is vegetable, animal or marine oil.