Methods of using leuco colorants as bluing agents in laundry care compositions

A method for treating textile articles comprising the steps of:

• (a) providing a laundry care composition comprising a leuco composition;
• (b) adding the laundry care composition to a liquid medium;
• (c) placing the textile articles in contact with the liquid medium;
• (d) depositing at least some portion of the leuco composition onto the textile articles;
• (e) optionally, rinsing the textile;
• and (f) drying the textile articles, wherein the leuco composition comprises a leuco colorant with a Photosensitivity Index of greater than or equal to 10, wherein the leuco composition is selected from one or more compounds selected from the group consisting of:
• (f) mixtures thereof;
• wherein the ratio of Formula I-IV to its oxidized form is at least 1:3;
• wherein e and f are independently integers from 0 to 4;
• wherein each R20 and R21 is independently selected from the group consisting of a halogen, a nitro group, alkyl groups, substituted alkyl groups, —NC(O)OR1, —NC(O)SR1, —OR1 and —NR1R2;
• wherein each R25 is independently selected from the group consisting of a monosaccharide moiety, a disaccharide moiety, an oligosaccharide moiety, a polysaccharide moiety, —C(O)R1, —C(O)OR1, —C(O)NR1R2;
• wherein each R22 and R23 is independently selected from the group consisting of hydrogen, an alkyl group, and substituted alkyl groups;
• wherein R30 is positioned ortho or para to the bridging amine moiety and is selected from the group consisting of —OR38 and —NR36R37, wherein each R36 and R37 is independently selected from the group consisting of hydrogen, an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an acyl group, R4, —C(O)OR1, —C(O)R1, and —C(O)NR1R2;
• wherein R38 is selected from the group consisting of hydrogen, an acyl group, —C(O)OR1, —C(O)R1, and —C(O)NR1R2;
• wherein g and h are independently integers from 0 to 4;
• wherein each R31 and R32 is independently selected from the group consisting of an alkyl group, a substituted alkyl group, an aryl group, a substituted aryl group, an alkaryl substituted alkaryl, −(CH2)n—O—R1, —(CH2)n—NR1R2, —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, —P(O)2R1, —P(O)(OR1)2, —P(O)(OR1)O−, and —P(O)(O−)2, wherein the index n is an integer from 0 to 4;
• wherein —NR34R35 is positioned ortho or para to the bridging amine moiety and R34 and R35 are independently selected from the group consisting of hydrogen, an alkyl, a substituted alkyl, an aryl, a substituted aryl, an alkaryl, a substituted alkaryl, and R4;
• wherein R33 is independently selected from the group consisting of hydrogen, —S(O)2R1, —C(O)N(H)R1;
• —C(O)OR1;
• and —C(O)R1;
• wherein when g is 2 to 4, any two adjacent R31 groups may combine to form a fused ring of five or more members wherein no more than two of the atoms in the fused ring may be nitrogen atoms;
• wherein X40 is selected from the group consisting of an oxygen atom, a sulfur atom, and NR45;
• wherein R45 is independently selected from the group consisting of hydrogen, deuterium, an alkyl, a substituted alkyl, an aryl, a substituted aryl, an alkaryl, a substituted alkaryl, —S(O)2OH, —S(O)2O−, —C(O)OR1, —C(O)R1, and —C(O)NR1R2;
• wherein R40 and R41 are independently selected from the group consisting of —OR1 and —NR1R2;
• wherein j and k are independently integers from 0 to 3;
• wherein R42 and R43 are independently selected from the group consisting of an alkyl, a substituted alkyl, an aryl, a substituted aryl, an alkaryl, a substituted alkaryl, —S(O)2R1, —C(O)NR1R2, —NC(O)OR1, —C(O)SR1, —C(O)OR1, —C(O)R1, —NR1R2;
• wherein R44 is —C(O)R1, —C(O)NR1R2, and —C(O)OR1;
• wherein R1 and R2 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 any charge present in any of the compounds is balanced with a suitable independently selected internal or external counterion, wherein the leuco composition is uncolored and undergoes color change only when contacted with a triggering agent, wherein the laundry care composition comprises an antioxidant.