Coated recording sheets for water resistant images

Claim 1

A recording sheet which comprises a substrate and a coating consisting essentially of (1) quaternary ammonium polymers selected from the group consisting of (a) polymers of Formula I ##STR17## wherein n is an integer of from 1 to about 200, R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of alkyl groups, hydroxyalkyl groups, and polyoxyalkylene groups, p is an integer of from 1 to about 10, q is an integer of from 1 to about 10, X is an anion, and Y 1 is selected from the group consisting of --CH 2 CH 2 OCH 2 CH 2 --, --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 --, --(CH 2 ) k --, wherein k is an integer of from about 2 to about 10, and --CH 2 CH(OH)CH 2 --; (b) polymers of Formula II ##STR18## wherein wherein n is an integer of from 1 to about 200, R 5 , R 6 , R 7 , and R 8 are each independently selected from the group consisting of alkyl groups, hydroxyalkyl groups, and polyoxyalkylene groups, m is an integer of from 0 to about 40, r is an integer of from 1 to about 10, s is an integer of from 1 to about 10, X is an anion, and Y 2 is selected from the group consisting of --CH 2 CH 2 OCH 2 CH 2 --, --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 --, --(CH 2 ) k --, wherein k is an integer of from about 2 to about 10, and --CH 2 CH(OH)CH 2 --; (c) copolymers of Formula III ##STR19## wherein a and b are each integers wherein the sum of a+b is from 2 to about 200, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are each independently selected from the group consisting of alkyl groups, hydroxyalkyl groups, and polyoxyalkylene groups, p is an integer of from 1 to about 10, q is an integer of from 1 to about 10, X is an anion, and Y 1 and Y 2 are each independently selected from the group consisting of --CH 2 CH 2 OCH 2 CH 2 --, --CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 --, --(CH 2 ) k --, wherein k is an integer of from about 2 to about 10, and --CH 2 CH(OH)CH 2 --; (d) mixtures of polymers of Formula I and polymers of Formula II; (e) mixtures of polymers of Formula I and copolymers of Formula III; (f) mixtures of polymers of Formula II and copolymers of Formula III; and (g) mixture of polymers of Formula I, polymers of Formula II, and copolymers of Formula III; (2) an optional binder polymer; and (3) an optional filler.