Bis-azo colorants for use as bluing agents
AssigneeThe Procter & Gamble Company
InventorsGregory Scot Miracle, Robert L. Mahaffey, Xiaoyong Michael Hong, Eduardo Torres, Dominick J. Valenti
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Abstract
Bis-azo colorants for use as bluing agents, laundry care compositions including bis-azo colorants that may serve as bluing agents, processes for making such bluing agents and laundry care compositions and methods of using the same. The bluing agents are generally include at least two components: at least one chromophore component and at least one polymeric component. These bluing agents are advantageous in providing a whitening effect to fabrics, while not building up over time and causing undesirable blue discoloration to the treated fabrics.
Claims8
A laundry care composition comprising a laundry care ingredient and a bluing agent, wherein said bluing agent comprises an alkoxylated bis-azo polymeric colorant comprising the following structure:
- wherein:
- R1 and R2 are independently H, alkyl, alkoxy, alkyleneoxy, alkyl capped alkyleneoxy, polyalkyleneoxy, alkyl capped polyalkyleneoxy, urea, or amido;
- W is a substituted amino moiety;
- U is a hydrogen, an amino group or an amino group substituted with an acyl group;
- Y is a hydrogen or a sulfonic acid moiety;
- and
- Z is a sulfonic acid moiety or an amino group substituted with a phenyl group, wherein the W substituted amino moiety substituents are phenyl moieties further substituted with polyalkyleneoxy moieties having at least 4 repeating units, wherein the composition comprises water.
Dependencies are inferred from the claim text.