Liquid suspension composition containing gallium particles and process for producing the same

A process for producing a liquid suspension composition containing gallium or gallium alloy particles, said process comprising the steps of preparing gallium or gallium alloy particles to have a size of not greater than 150 .mu.m, mixing said gallium or gallium alloy particles with a molten lubricant to obtain particles coated on the surface thereof with the lubricant and dispersing 0.005-5 parts by weight of the coated gallium or gallium alloy particles in 100 parts by weight of a liquid suspending medium, said gallium alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.

A process for producing a liquid suspension composition containing gallium or gallium alloy particles, said process comprising the steps of melting metallic gallium or a gallium alloy in an atmosphere of inert gas at a temperature higher than the melting point of the gallium or gallium alloy to be melted, but not higher than 100.degree. C., atomizing the molten metal through a nozzle into a cooling medium, maintaining the cooling medium at a temperature not higher than 10.degree. C. to obtain gallium or gallium alloy particles having a size of not greater than 150 .mu.m, mixing the resulting particles with a molten lubricant to obtain particles coated on the surface thereof with the lubricant and dispersing 0.005-5 parts by weight of the coated gallium or gallium alloy particles in 100 parts by weight of a liquid suspending medium, said gallium alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.

An engine oil composition comprising a liquid suspension which comprises 0.005-5 parts by weight of metallic gallium or gallium alloy particles having a size of not greater than 150 .mu.m suspended in 100 parts by weight of an engine oil as a liquid suspending medium, said gallium or gallium alloy particles being covered on the surface thereof with a coating agent selected from the group consisting of waxes, coupling agents and polymerizable monomers, said alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.

A gasoline composition comprising a liquid suspension which comprises 0.005-5 parts by weight of metallic gallium or gallium alloy particles having a size of not greater than 150 .mu.m suspended in 100 parts by weight of gasoline as a suspending medium, said gallium or gallium alloy particles being covered on the surface thereof with a coating agent selected from the group consisting of waxes, coupling agents and polymerizable monomers, said alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.

In a ski wax composition comprising a liquid suspension which comprises 0.005-5 parts by weight of metallic gallium or gallium alloy particles having a size of not greater than 150 .mu.m suspended in 100 parts by weight of n-hexane as a liquid suspending medium, said gallium or gallium alloy particles being covered on the surface thereof with a coating agent selected from the group consisting of waxes, coupling agents and polymerizable monomers, said alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.

A liquid lubricant composition comprising a liquid suspension which comprises 0.005-5 parts by weight of metallic gallium or gallium alloy particles having a size of not greater than 150 .mu.m suspended in 100 parts by weight of n-hexane as a liquid suspending medium, said gallium or gallium alloy particles being covered on the surface thereof with a coating agent selected from the group consisting of waxes, coupling agents and polymerizable monomers, said alloy being selected from the group consisting of Ga-5Zn, Ga-15Zn, Ga-40In, Ga-5Al and Ga-15Al.