Abstract: An oral composition contains as a surface-active agent 0.1 to 5% by weight of a fatty acid ester of a sugar alcohol selected from the group consisting of lactitol, maltitol, maltotriitol, maltotetraitol, maltopentaitol, maltohexaitol, maltoheptaitol and mixtures thereof. The ester has an acyl group with 8 to 20 carbon atoms such as lauroyl. The oral composition which may be applicable as toothpaste, toothpowder, mouthwashes and the like has a pleasant taste as well as a good foaming power.

Abstract: Disclosed is a process for producing olefin oligomer from olefins having not less than 6 carbon atoms in the presence of a reaction mixture of an aluminum halide and a secondary or tertiary alcohol in the stated equivalent proportions. The olefin oligomers thus obtained have a high kinematic viscosity, a low pour point, a high viscosity index and a good shear stability.

Abstract: A process for producing an olefin oligomer comprising polymerizing olefin having not less than 6 carbon atoms in the presence of a catalyst consisting essentially of (a) aluminum halide, (b) polyhydric alcohol derivative of which alcohol the hydrogen atoms of the entire hydroxyl groups are substituted with either one or both of alkyl and acyl groups and (c) a nickel compound or cobalt compound is provided. Thus, an olefin oligomer having a narrow distribution of the polymerization degree and good properties can be obtained with a high selectivity by using a catalyst capable of being easily handled.

Abstract: A cosmetic base material which consists of a synthetic saturated aliphatic hydrocarbon having 24 to 36 carbon atoms, wherein the proton ratio of methyl group to methylene group, that is, CH.sub.3 /CH.sub.2, within the hydrocarbon chain is in the range of from 0.25 to 0.6 and the pour point is in the range of from -55.degree. C. to 10.degree. C.

Abstract: A method of preparing a polyolefin oil in the present invention comprises polymerizing an olefin having 6 or more carbon atoms in the presence of a catalyst mixture consisting of a polyester of polycarboxylic acid and an aluminum halide. The thus prepared polyolefin oil has a low viscosity and a high viscosity index. When the foregoing polymerization is effected by adding aluminum powder to said catalyst mixture, the content of halogen in the resulting polyolefin oil can be decreased all the more.

Abstract: Liquid polyolefin oil having a kinematic viscosity of about 500 centistokes or more at 100.degree. F, a high viscosity index, a good shearing stability and a low pour point can be prepared by polymerizing an olefin having 6 or more carbon atoms in the presence of a catalyst mixture of (a) a dicarbonyl compound selected from a group consisting of acyclic or cyclic diketones and ketoesters and (b) an aluminum halide in an amount of 0.7 - 5 mole per one carbonyl group or ester bond of said dicarbonyl compound. Said catalyst mixture may contain an alkyl halide.

Abstract: A method for producing a liquid olefin polymer which comprises polymerizing an .alpha.-olefin having 6 - 14 carbon atoms or mixtures thereof, in the presence of a catalyst consisting of an alkali metal hydride, a halide of an element selected from boron and aluminum and a titanium halide, or a catalyst in which metallic lithium or sodium is added to those catalyst ingredients.