Abstract: An apparatus that pulverizes feedstock material with crushers injects a liquefied inert gas into the feedstock material, evaporation of the gas causing the material to become very cold, brittle, facilitating further processing. Very fine finished particle sizes, passing −200 micron mesh screens, result from the use of the apparatus. The apparatus generally requires little maintenance to achieve such small particle size as compared to mechanical crushers. Because of the effect of the inert gas upon the feedstock material, pulverization generally occurs by impact only. A method for pulverizing is also described.

Abstract: An apparatus that pulverizes feedstock material with crushers injects a liquefied inert gas into the feedstock material, evaporation of the gas causing the material to become very cold, brittle, facilitating further processing. Very fine finished particle sizes, passing −200 micron mesh screens, result from the use of the apparatus. The apparatus generally requires little maintenance to achieve such small particle size as compared to mechanical crushers. Because of the effect of the inert gas upon the feedstock material, pulverization generally occurs by impact only. A method for pulverizing is also described.

Abstract: The invention provides a liquid composition for coating surfaces, comprising: polymer droplets dispersed in a liquid component, ultraviolet light (UV) absorber, and defoamer. The liquid component comprises water, and volatile organic solvent. The organic solvent comprises a first and a second ether. The first and the second ether are miscible with water. The UV absorber and the defoamer are dispersed in the liquid component. A preferred embodiment of the invention provides the liquid composition with a particulate composition to provide a material for superior non-skid surface coatings, such as non-skid flooring surface coatings. Thus, the invention provides a material for making non-skid coatings, comprising: a particulate composition including wollastonite particles, cellulose particles, and diatomaceous earth particles.

Abstract: The invention provides a material for making non-skid coatings, comprising: a particulate composition including wollastonite particles, cellulose particles, and diatomaceous earth particles. The invention provides a method of forming a non-skid coated substrate, comprising: providing a material for making non-skid coatings, comprising: particulate composition, the particulate composition comprising wollastonite particles, cellulose particles, and diatomaceous earth particles, providing liquid composition comprises water, fungicide, defoamer, ultra-violet light absorber and polymeric material, mixing the particulate composition and the liquid composition to form a coating composition, coating the coating composition onto a surface of a substrate to form a non-skid coated substrate.