The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2003
Filed:
Dec. 11, 2000
Mats Tonnvik, Rydebaeck, SE;
Andreas Sturm, Osthofen, DE;
Gonda van Essche, Worms, DE;
Andreas Schmidt, Mannheim, DE;
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
The invention comprises a granulate comprising a) a micronized silicic acid gel (A) with an average particle size from 2 to 15 microns, a specific pore volume from 0.3 to 2.0 ml/g, a specific surface (BET) from 200 to 1000 m /g, in a concentration from 5 to 60% by weight or b) a hydrated or dehydrated aluminosilicate (B) which contains sodium and/or potassium and/or calcium cations, with a particle size between 1 and 25 microns in a concentration from 5 to 75% by weight and c) an organic additive composition (C) in a concentration from 25 to 95% by weight, but at least 5% more (measured by the oil adsorption process) than that which is necessary to fill all pores of the silicic acid and the spaces between the silicic acid particles and the aluminosilicate and the aluminosilicate particles.