Patent ID: 6420456
Filing Date: 2002-07-16
Classification: C01P,C08K,C09C,Y10T

Abstract:
A process for treating particles comprising the steps of:contacting the particles with a compound of Formula I: â€ƒor an acid addition or quaternary ammonium salt thereof, in which: R1, R2 and R3 is selected from a hydroxyl group and a hydrolysable group; R4 is a divalent group that is resistant to hydrolysis at the Siâ€”R4 bond: R5 is selected from the group comprising: hydrogen; a C1-40 alkyl: a C6-C40 aryl group; a C2-40 mono-, di- or tri-unsaturated alkenyl group; a group of the formula: â€ƒin which x is an integer from 2 to 10, R13 and R14, which may be the same or different, are each hydrogen; C1-18 alkyl; C2-18 mono-, di- or tri-unsaturated alkenyl; phenyl; a group of formula: â€ƒwherein b is an integer from 1 to 10; a group of formula: â€ƒwherein c is an integer from 1 to 10 and R22 and R23, which may be the same or different, are each hydrogen, C1-10 alkyl group or C2-10 alkenyl group, provided that there is no double bond in the position alpha to the nitrogen atom; a group of formula: â€ƒwherein r is an integer from 1 to 6 and d is an integer from 1 to 4; R6 may be any of the groups defined for R5, or R5 and R6 may together form a divalent group of formula: â€ƒin which A is selected from the group comprising â€”CHR or â€”NR group in which R is hydrogen or a C1-40 alkyl or C2-40 alkenyl group, a C6-C40 aryl group, an oxygen atom and a sulfur atom, and t and v are each independently 1, 2, 3 or 4; provided that the sum of t and v does not exceed 6; and contacting the particles with a compound of the Formula II: â€ƒin which: R15, R16 and R17 have the same definitions as R1, R2 and R3; and R12 is selected from the group comprising a C8-40 alkyl group or a C8-40 mono-, di- or tri-unsaturated alkenyl group, either of which can be interrupted by one or more aryl groups; a group of formula: â€ƒor an acid addition or quaternary ammonium salt thereof in which R18 is a divalent group resistant to hydrolysis at the Siâ€”R18 bond, R19 is selected from the group comprising hydrogen, a C1-40 alkyl group, a C2-40 mono-, di- or tri-unsaturated alkenyl group, a substituted aromatic group, the aromatic group being unsubstituted or substituted by a C1-20 alkyl or C2-20 mono-, di- or tri-unsaturated alkenyl group; and R20 may be any of the groups defined for R19, with the provisos that R19 and R20 do not have a tertiary carbon atom adjacent to the nitrogen atom and that at least one of R19 and R20 has a carbon chain at least 8 carbon atoms in length uninterrupted by any heteroatoms.