Patent ID: 8003580
Filing Date: 2011-08-23
Classification: C09K

Abstract:
1. A process for the preparation of a consolidated proppant, which process comprises (a) mixing a consolidating agent with a proppant; and (b) curing the consolidating agent mixed with the proppant at elevated pressure and elevated temperature; the consolidating agent comprising (A1) a hydrolysate or condensate of (i) at least one functionalized organosilane of formula (I) in which the radicals Rx are identical or different and represent groups which cannot be eliminated hydrolytically and comprise at least one crosslinkable functional group, the radicals R are identical or different and represent groups which cannot be eliminated hydrolytically, the radicals X are identical or different and represent groups which can be eliminated hydrolytically or hydroxyl groups, b is 1, 2 or 3, c is 0, 1 or 2, (b+c) being 1, 2 or 3; (ii) optionally, at least one hydrolyzable silane of formula (II) in which X is as defined in formula (I); and (iii) at least one metal compound of formula (III) in which M is a metal of main groups I to VIII or of subgroups II to VIII of the Periodic Table of Elements, including boron, X is as defined in formula (I), it being possible for two groups X to be replaced by an oxo group, and a corresponds to the valency of M; a molar ratio of silicon compounds used to metal compounds used being from 10,000:1 to 10:1, and (A2) an organic crosslinking agent having at least two functional groups.