Stable aqueous slurry suspensions

摘要

A slurry composition for use as a lubricant and/or a stable suspension medium to suspend inert organic or inorganic particles which is an aqueous or polar solvent carrier containing gel particles as a lubricating and suspending agent for inert organic or inorganic particles. The composition can contain inorganic salts to provide additional electrostatic repulsion.

主权项

1. A method for the suspension of inert colloidal or non-colloidal abrasive or non-abrasive particles in a stable aqueous, semi aqueous or non-aqueous organic carrier medium which comprises producing in-situ suspending particles selected from the group consisting of stable gel particles, sol-gel particles and gelatinous precipitates so as to establish an appropriate concentration of suspending particles to inert particles interference to settling of said inert particles in said carrier medium, said carrier medium comprising about 0.1 to 50% by weight of the suspending particles, which differ from said inert particles, and are selected from the group consisting of alkaline metal and transition metal hydroxides, oxy hydroxides, and oxide hydrates that form in-situ said suspending particles within and inclusive of said carrier medium at a pH of about 4 to 10, whereby said inert particles are suspended as a result of at least one of physical interference, density differences, particle size differences and electrostatic charge repulsion.