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US 4,049,893 AGranted
Hydrogenated waxy olefin and process of making same
AssigneePennzoil Company
InventorLouis E. Kidwell, Jr.
Life of this patent
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AssigneePennzoil Company
InventorLouis E. Kidwell, Jr.
Estimating the term…
This invention relates to a substantially hydrogen saturated hydrocarbon product formed by the hydrogenation of waxy polyethylene alpha-olefin having an average molecular weight of about 350 to about 900. The hydrogenation is conducted at pressures ranging from about 200 psig to about 1000 psig and at hydrogenating temperatures below about 750.degree. F in the presence of a conventional active hydrogenation catalyst. The resulting product may be utilized as a substitute for petroleum wax in the production of various compositions, such as carpet backing compositions, candle wax compositions, pressure sure sensitive tape, paper coating compositions, coatings for fruit, rust preventatives, cosmetics, and similar products. In such compositions the novel hydrogenated alpha olefins may be substituted for petroleum wax as customarily used or it may be used as an extender in any desired proportion with petroleum wax.
A process for the hydrogenation of waxy polyethylene olefins comprising reacting (a) a feed stock consisting of said waxy polyethylene alpha olefins, said alpha olefins having an average molecular weight in the range of 350 to 900, a normal straight chain hydrocarbon content of at least 45% and having at least 22 carbon atoms in at least 95% of the molecules of said alpha olefins with (b) a hydrogen affording gas in an amount sufficient to supply at least a stoichiometrical quantity of hydrogen to said feed stock by contacting said feed stock with said hydrogen-affording gas at pressures ranging from about 200 psig to about 1000 psig at hydrogenation temperatures below about 750.degree. F in the presence of an active hydrogen catalyst.
A process for the continuous hydrogenation of waxy polyethylene alpha olefins comprising reacting (a) in a continuous reactor containing an active hydrogenation catalyst, said waxy polyethylene alpha olefins, said alpha olefins having an average molecular weight in the range of 350 to 900, a normal straight chain hydrocarbon content of at least 45%, and further having at least 22 carbon atoms in at least 95% of the molecules of said alpha olefins with (b) a hydrogen affording gas in an amount sufficient to supply at least a stoichiometrical quantity of hydrogen to said alpha olefins, said hydrogenation reaction being conducted at pressures ranging from about 200 psig to about 1000 psig at temperatures sufficient for hydrogenation but below about 750.degree. F.
A waxy composition comprising a substantially saturated oxidation-stable hydrocarbon product formed by the hydrogenation of polyethylene alpha olefins having an average molecular weight of 350 to 900, said alpha olefins having a normal straight chain hydrocarbon content of at least 45% and further having at least 22 carbon atoms in at least 95% of the molecules of said alpha olefins, said hydrogenation being conducted by contacting said olefins with at least a stoichiometrical amount of hydrogen in a hydrogen affording gas in the presence of an active hydrogenation catalyst at pressures ranging from about 200 psig to about 1000 psig and at hydrogenation temperatures below about 750.degree. F.
Dependencies are inferred from the claim text.