Fine Grain Filler with Improved Wettability
AssigneeAnkerpoort N.V.
InventorCharles Edwards
Life of this patent
Estimating the term…
Abstract
A filler for a coating including a powder formed from igneous rock with substantially no free silica and a Mohs hardness of at least 5 and a controlled maximum particle size of less than 6 microns, wherein said particles have a surface fluid layer of a lubricative fluid to drastically increase the wettability of said powder and a method of producing the same.
Claims26
A filler for a coating comprising a powder formed from igneous rock with substantially no free silica and a Mohs hardness of at least 5 and a controlled maximum particle size of less than 6 microns, wherein said particles have a surface fluid layer of a lubricative fluid to drastically increase the wettability of said powder.
A method of producing a filler for a coating, said method comprising:
- (a) converting a particle mass of igneous rock having a maximum particle size D99 at a given level into a dry final particles having a reduced maximum particle size of less than 6 microns;
- and,
- (b) during said converting operation applying a surface layer of a treating fluid onto said dry final particles which fluid is lubricative so said dry final particles have a drastically increased wettability, said treating fluid being applied in an amount to obtain the desired increase in wettability of said dry final particles which comprises said filler.
Dependencies are inferred from the claim text.