Back to results
US 4,069,235 AGranted
Method for manufacture of poly-fatty acids
AssigneeAgency of Industrial Science and Technology
InventorsOsamu Suzuki, Keizo Tanabe, Tetsutaro Hashimoto
Life of this patent
Estimating the term…
Abstract
A poly-fatty acid is manufactured by continuously passing a higher unsaturated fatty acid, over a catalyst having phosphoric acid deposited on a synthetic silica-alumina carrier.
Claims4
A method for the manufacture of a poly-fatty acid, which comprises:
- continuously flowing and contacting at least one straight chain or branched chain ethylenically unsaturated fatty acid having a 8 to 22 carbon atoms with a synthetic silica-alumina catalyst having a composition of 69 to 72 weight % SiO.sub.2, 27 to 30 weight % Al.sub.2 O.sub.3 not more than 1 weight % Fe.sub.2 O.sub.3, not more than 1 weight % CaO and not more than 1 weight % MgO and having phosphoric acid supported thereon in an amount of 0.1 to 2.0 milli-equivalent per gram of said synthetic silica-alumina catalyst and maintaining the temperature of the reaction in a range of 150.degree. C to 330.degree. C, whereby said fatty acid is polymerized.
Dependencies are inferred from the claim text.