Antistatic compositions comprising crosslinkable latex binders

Claim 2

A coating composition comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer and b. a second polymer which is a crosslinkable latex polymer binder, represented by the formula: --(A).sub.x (B).sub.y (C).sub.z wherein A is an alkyl methacrylate, B is styrene or a haloalkyl methacrylate and C is derived from a monomer which contains an active epoxide group; x is from about 5 to about 80 weight percent; y is from about 5 to about 80 weight percent; and z is from about 15 to about 40 weight percent; said latex polymer having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 3

A coating composition according to claim 1 wherein A is selected from the group consisting of n-lauryl methacrylate nd n-butyl methacrylate, B is selected from the group consisting of styrene and 2-chloroethyl methacrylate, and C is glycidyl methacrylate.

Claim 4

A coating composition according to claim 2 wherein x is between 25 and 65 weight percent, y is between 25 and 65 weight percent and z is between 15 and 35 weight percent.

Claim 5

A coating composition comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer is represented by the formula: ##STR5## wherein: CPA is a polymerized monomer containing at least two ethylenically unsaturated groups; CPB is a polymerized copolymerizable, α,β-ethylenically unsaturated monomer; Q is N or P; R 1 , R 2 and R 3 are independently selected from the group consisting of carbocyclic, alkyl, aryl and aralkyl, and wherein R 1 , R 2 and R 3 together can form the atoms necessary to complete a heterocyclic ring with Q; M is an anion; x 1 is from about 0.1 to about 20 mole percent; y 1 is from about 0 to about 90 mole percent; and z 1 is from about 10 to about 99 mole percent; and b. a second polymer which is a crosslinkable latex selected from the group consisting of poly(n-lauryl methacrylate-co-2-chloroethyl methacrylate-co-glycidyl methacrylate) and poly(n-butyl methacrylate-co-styrene-co-glycidyl methacrylate); said latex polymer having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 6

A coating composition comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer is represented by the formula: ##STR5## wherein: CPA is a polymerized monomer containing at least two ethylenically unsaturated groups; CPB is a polymerized copolymerizable, α,β-ethylenically unsaturated monomer; Q is N or P; R 1 , R 2 and R 3 are independently selected from the group consisting of carbocyclic, alkyl, aryl and aralkyl, and wherein R 1 , R 2 and R 3 together can form the atoms necessary to complete a heterocyclic ring with Q; M is an anion; x 1 is from about 0.1 to about 20 mole percent; y 1 is from about 0 to about 90 mole percent; and z 1 is from about 10 to about 99 mole percent; and b. a second polymer which is a crosslinkable latex selected from the group consisting of poly(n-lauryl methacrylate-co-2-chloroethyl methacrylate-co-glycidyl methacrylate) and poly(n-butyl methacrylate-co-styrene-co-glycidyl methacrylate); said latex polymer having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 7

A coating composition according to claim 4 wherein said conductive polymer is poly(n-vinylbenzyl-N,N,N-trimethylammonium chloride-co-ethylene glycol dimethacrylate) (93/7 molar percent).

Claim 8

An element comprising a support having coated thereon a conductive layer comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer and b. a second polymer which is a coalesced and crosslinked latex polymer binder, said latex polymer having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 9

An element comprising a support having coated thereon a conductive layer comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer and b. a second polymer which is a coalesced and crosslinked latex polymer binder, said latex polymer having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 10

An element according to claim 6 wherein said latex binder comprises polymers represented by the formula: --A).sub.x (B).sub.y (C).sub.z wherein A and B can be the same or different and are copolymerized, α,β-ethylenically unsaturated monomers; C is a crosslinkable, copolymerized, α,β-ethylenically unsaturated monomer; x is from about 5 to about 80 weight percent; y is from about 5 to about 80 weight percent; and z is from about 15 to about 40 weight percent.

Claim 11

An element according to claim 7 wherein A is an alkyl methacrylate, B is styrene or a haloalkyl methacrylate and C is derived from a monomer which contains an active epoxide group.

Claim 12

An element according to claim 8 wherein A is selected from the group consisting of n-lauryl methacrylate and n-butyl methacrylate, B is selected from the group consisting of styrene and 2-chloroethyl methacrylate, and C is glycidyl methacrylate.

Claim 13

An element according to claim 9 wherein x is between 25 and 65 weight percent, y is between 25 and 65 weight percent and z is between 15 and 35 weight percent.

Claim 14

An element according to claim 6 wherein said conductive, water-dispersible, particulate polymer is represented by the formula: ##STR6## wherein: CPA is a polymerized monomer containing at least two ethylenically unsaturated groups; CPB is a polymerized copolymerizable, α,β-ethylenically unsaturated monomer; Q is N or P; R 1 , R 2 and R 3 are independently selected from the group consisting of carbocyclic, alkyl, aryl and aralkyl, and wherein R 1 , R 2 and R 3 together can form the atoms necessary to complete a heterocyclic ring with Q; M is an anion; x 1 is from about 0.1 to about 20 mole percent; y 1 is from about 0 to about 90 mole percent; and z 1 is from about 10 to about 99 mole percent.

Claim 15

An element according to claim 11 wherein said conductive polymer is poly(N-vinylbenzyl-N,N,N-trimethylammonium chloride-co-ethylene glycol dimethacrylate (93/7 molar percent).

Claim 16

An element according to claim 11 wherein said crosslinkable latex is selected from the group consisting of poly(n-lauryl methacrylate-co-2-chloroethyl methacrylate-co-glycidyl methacrylate) and poly(n-butyl methacrylate-co-styrene-co-glycidyl methacrylate).

Claim 17

An element according to claim 6 wherein said conductive layer is overcoated with a coalesced and crosslinked layer of said latex binder.

Claim 18

A photographic element comprising a support having coated thereon a radiation-sensitive layer and a conductive layer comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer and b. a second polymer which is a coalesced and crosslinked latex polymer binder, said latex having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 19

A photographic element comprising a support having coated thereon a radiation-sensitive layer and a conductive layer comprising a mixture of at least two different polymers: a. a first polymer which is a conductive, water-dispersible, particulate polymer and b. a second polymer which is a coalesced and crosslinked latex polymer binder, said latex having a first glass transition temperature before crosslinking of substantially less than 50° C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50° C.

Claim 20

A photographic element according to claim 15 having a hydrophilic layer as the outermost layer on one side of said support and having said conductive layer on the other side of said support.

Claim 21

A photographic element according to claim 16 wherein said conductive layer is overcoated with a coalesced and crosslinked layer of said latex binder.

Claim 22

An element according to claim 15 wherein said latex binder comprises polymers represented by the formula: --A).sub.x (B).sub.y (C).sub.z wherein A and B can be the same or different and are copolymerized, α,β-ethylenically unsaturated monomers; C is a crosslinkable, copolymerized, α,β-ethylenically unsaturated monomer; x is from about 5 to about 80 weight percent; y is from about 5 to about 80 weight percent; and z is from about 15 to about 40 weight percent.

Claim 23

An element according to claim 18 wherein A is an alkyl methacrylate, B is styrene or a haloalkyl methacrylate and C is derived from a monomer which contains an active epoxide group.

Claim 24

An element according to claim 19 wherein A is selected from the group consisting of n-lauryl methacrylate and n-butyl methacrylate, B is selected from the group consisting of styrene and 2-chloroethyl methacrylate, and C is glycidyl methacrylate.

Claim 25

An element according to claim 20 wherein x is between 25 and 65 weight percent, y is between 25 and 65 weight percent and z is between 15 and 35 weight percent.

Claim 26

An element according to claim 15 wherein said conductive, water-dispersible, particulate polymer is represented by the formula: ##STR7## wherein: CPA is a polymerized monomer containing at least two ethylenically unsaturated groups; CPB is a copolymerized copolymerizable, α,β-ethylenically unsaturated monomer; Q is N or P; R 1 , R 2 and R 3 are independently selected from the group consisting of carbocyclic, alkyl, aryl and aralkyl, and wherein R 1 , R 2 and R 3 together can form the atoms necessary to complete a heterocyclic ring with Q; M is an anion; x 1 is from about 0.1 to about 20 mole percent; y 1 is from about 0 to about 90 mole percent; and z 1 is from about 10 to about 99 mole percent.

Claim 27

An element according to claim 22 wherein said conductive polymer is poly(n-vinylbenzyl-N,N,N-trimethylammonium chloride-co-ethylene glycol dimethacrylate (93/7 molar percent).

Claim 30

A method according to claim 24 wherein said coalescing and crosslinking step comprises heating said layer to at least about 90° C. for about 2 minutes.