Leuco polymers as bluing agents in laundry care compositions

A method for obtaining a leuco polymer, the method comprising the step of reacting a compound with a polymer to form the leuco polymer, wherein the compound comprises at least one leuco moiety and at least one electrophilic group, wherein the polymer is comprised of co-monomers of an aryl dicarboxylate, an oxyalkyleneoxy and an oxypolyalkyleneoxy and the polymer comprises at least one moiety selected from the group consisting of hydroxy, sulfhydryl, primary amine and secondary amine, wherein the leuco moiety is a univalent or polyvalent moiety derived by removal of one or more hydrogen atoms from a structure of Formula (I

• wherein the ratio of Formula I-V to its oxidized form is at least 1:3;
• wherein each individual Ro, Rm and Rp group on each of rings A, B and C is independently selected from the group consisting of hydrogen, deuterium and R5;
• wherein each R5 is independently selected from the group consisting of halogens, nitro, alkyl, substituted alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, C(O)R1, C(O)OR1, —C(O)O−, —C(O)NR1R2, —OC(O)R1, —OC(O)OR1, —OC(O)NR1R2, —S(O)2R1, —S(O)2OR1, —S(O)2O−, —S(O)2NR1R2, —NR1C(O)R2, —NR1C(O)OR2, —NR1C(O)SR2, —NR1C(O)NR2R3, —OR1, —NR1R2, —P(O)2R1, —P(O)(OR1)2, —P(O)(OR1)O−, and —P(O)(O−)2;
• wherein at least one of the Ro and Rm groups on at least one of the three rings A, B or C is hydrogen;
• each Rp is independently selected from hydrogen, —OR1 and —NR1R2;
• wherein G is independently selected from the group consisting of hydrogen, deuterium, C1-C16 alkoxide, phenoxide, bisphenoxide, nitrite, nitrile, alkyl amine, imidazole, arylamine, polyalkylene oxide, halides, alkylsulfide, aryl sulfide, and phosphine oxide;
• wherein R1, R2 and R3 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, and R4;
• R4 is a organic group composed of one or more organic monomers with said monomer molecular weights ranging from 28 to 500;
• wherein e and f are independently integers from 0 to 4;
• wherein any charge present is balanced with a suitable independently selected internal or external counterion;
• and
• wherein all four of the Ro and Rm groups on at least one of the three rings A, B or C are hydrogen.