Patent ID: 7740920
Filing Date: 2010-06-22
Classification: B41M,Y10T

Abstract:
1. In combination, a print substrate and a modified silica coating thereon, said modified silica comprising the reaction product of silica and an organo silane having the formula SiR 4 , where (i) one R is selected from the group consisting of halogen and alkoxy, (ii) one other R is an active group selected from the group consisting of (1) linear or branched alkyl groups up to C 22 , represented by the formula —CH 2 —(CH 2 ) n —CH 3 , where n is an integer up to 20; (2) (a) cyano, (b) carboxy, (c) sulfonate, (d) halogen, (e) epoxy, (f) furfuryl, (g) pyridyl, and (h) imidazoline derivative-substituted alkyl groups up to C 8 ; (3) cycloalkyl groups and their alkyl derivatives, cycloalkenyl groups and their alkyl derivatives, and epoxycycloalkyl groups up to eight carbon atoms and their alkyl derivatives; (4) phenyl groups and their alkyl derivatives, and phenoxy groups and their alkyl derivatives; and (5) (a) carboxy, (b) sulfonate, and (c) halogen-substituted counterparts of (4); and wherein the active group is other than a quaternary ammonium group, a mono-ethyleneimine group or a polyethyleneimine group, and (iii) any remaining R is a lower alkyl group having from 1 to 3 carbon atoms.