Patent ID: 8048526
Filing Date: 2011-11-01
Classification: C10M,C10N,Y10T

Abstract:
1. A capped particle comprising: (i) one or more core particles wherein the core particle is an inorganic particle having a dimension of about 5 μm or less; and (ii) one or more multi-block copolymers attached to the inorganic particles, wherein the multi-block copolymer comprises wherein the nonpolar polymer block is interposed between the first polar polymer block and the second polar polymer block, the first polar polymer block is attached to the core particle, and at least a portion of the second polar polymer block is not directly attached to the core particle; so that when used in a lubricant to lubricate a metallic surface of a workpiece, the capped particle adheres to the metallic surface of the workpiece.