Patent ID: 7425313
Filing Date: 2008-09-16
Classification: B60C,B82Y,C01F,C01P,C08K,C09C,G01N

Abstract:
1. A process for manufacturing an aluminum-based filler that includes an aluminum oxide-hydroxide corresponding, with an exception of any impurities and water of hydration, to Formula I, wherein a and b are real numbers: the process comprising: (i) reacting an aqueous solution of a Brönsted base and an aqueous solution of an aluminum salt under stuffing in order to precipitate an aluminum salt in a suspension of aluminum hydroxide; (ii) filtering and washing with water the suspension thus obtained to produce a filtrate; (iii) drying the filtrate under conditions such that agglomeration of hydroxide particles upon elimination of the water is limited; and (iv) heat-treating a product of (iii) so as to obtain an aluminum oxide-hydroxide.