| abstract |
A fine powder (poly) urea for use as a thickener in a lubricant is provided. Methods for preparing (poly) urea powders, novel (poly) urea powders, compositions containing them and their use as thickeners, in particular for use in lubricants such as so-called polyurea greases A method of preparing (poly) urea powder, wherein a suspension of (poly) urea particles in at least one solvent is spray dried. [Selection figure] None |