US 2020/0319555 Al  8  Oct. 8, 2020  [0092]  In another embodiment of any of the above aspects  of this invention said solid component c ), said crosslinking  agent, comprises etherified melamines selected from ones  having structure (12), oligomers formed by (12) or mixtures  of these; wherein R$_{8 }$ is methyl, H or represents a moiety of  structure (12a), wherein =  represents the attachment  point of moiety (12a) to structure (12), wherein R$_{8}$ a  is  methyl, H or represents another moiety of structure (12a).  [0090]  In another embodiment of any of the above aspects  of this invention said solid component c ), said crosslinking  agent, comprises an etherified melamine where this etheri› fied aminoplast crosslinking agent comprises an organic  oligomer or polymer that provides a carbonium ion upon and  serves to crosslink the film-forming binder resin in the  presence of an acid generated by radiation, preferably imag› ing radiation. This renders the binder resin insoluble in an  (10)  (lla)  [0089]  In another embodiment of this invention, said solid  component b) is a trihalomethyl derivative having structure  (10).  [0088]  In another embodiment of this invention, wherein  said solid component b) is a trihalomethyl derivative having  above structure (8) or (9), where R$_{6 }$ is ethyl.  [0087]  In another embodiment of this invention, wherein  said solid component b) is a trihalomethyl derivative having  above structure (8) or (9), where R$_{6 }$ is methyl.  [0086]  In another embodiment of this invention, wherein  said solid component b) is a trihalomethyl derivative having  above structure (8) or (9), where R$_{6 }$ is hydrogen.  (11)  [0091]  In another embodiment of any of the above aspects  of this invention said solid component c ), said crosslinking  agent, comprises etherified melamines selected from ones  having structure (11 ), oligomers formed by (11) or mixtures  of these; wherein R$_{7 }$ is a Cl to C4 alkyl, H or represents a  moiety of structure (lla), wherein =  represents the  attachment point of moiety (lla) to structure (11), wherein  R$_{7}$ a  is a Cl to C alkyl, H or represents another moiety of  structure (lla).  (9)  alkaline medium, in the exposed areas. Such crosslinking  agents may be prepared from a variety of aminoplasts in  combination with a compound or low molecular weight  polymer containing a plurality of hydroxyl, carboxyl, amide  or imide groups. Preferred amino oligomers or polymers are  aminoplasts obtained by the reaction of an amine, such as  urea, melamine, or glycolurea with an aldehyde, such as  formaldehyde. Such suitable aminoplasts include urea-form› aldehyde, melamine-formaldehyde, benzoguanamine-form› aldehyde, and gylcoluril-formaldehyde resins, and combi› nations of any of these. A particularly preferred aminoplast  is hexa(methoxymethyl) melamine oligomer.  [0085]  In another embodiment of this invention, wherein  said solid component b) is said trihalomethyl derivative, it  may be a derivative having structure (9), wherein Xis Cl or  Br, and further wherein, R$_{6 }$ is hydrogen or a Cl to C3 alkyl.  In one aspect of this embodiment Xis Cl, in another Xis Br.  [0084]  In another embodiment of any of the above aspects  this invention, wherein said solid component b) is said  trihalomethyl derivative, X is Br.  [0083]  In another embodiment of any of the above aspects  this invention, wherein said solid component b) is said  trihalomethyl derivative, X is Cl. 