Bis-Azo Colorants for Use as Bluing Agents
AssigneeMilliken & Company
InventorsRobert L. Mahaffey, JR., Xiaoyong Michael Hong, Eduardo Torres, Dominick J. Valenti, Gregory Scot Miracle
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Abstract
This invention relates to bis-azo colorants for use as bluing agents, laundry care compositions comprising 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 comprised of 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.
Claims21
A bluing agent comprising the following structure:
- wherein:
- R1 and R2 are independently H, alkyl, alkoxy, alkyleneoxy, alkyl capped alkyleneoxy, polyalkyleneoxy, alkyl capped polyalkyleneoxy, urea, or amido;
- R3 is an aryl group substituent that may be an amine substituted phenyl or naphthyl moiety;
- X is a substituted or unsubstituted amino or a substituted or unsubstituted sulfonamide group wherein the substituents are selected from the group consisting of alkyl, alkyleneoxy, polyalkyleneoxy, or phenyl moieties wherein the phenyl group may be further substituted with alkyl, alkyleneoxy or polyalkyleneoxy moieties.
A bluing agent comprising the following structure:
- wherein:
- R1 and R2 are independently H, alkyl, alkoxy, alkyleneoxy, alkyl capped alkyleneoxy, polyalkyleneoxy, alkyl capped polyalkyleneoxy, urea, or amido;
- R3 is an aryl group substituent that may be a substituted phenyl or naphthyl moiety;
- X is a substituted oxygen, a substituted or unsubstituted amino, or a substituted or unsubstituted sulfonamide group wherein the substituents are selected from the group consisting of alkyl, alkyleneoxy, polyalkyleneoxy, or phenyl moieties wherein the phenyl group may be further substituted with alkyl, alkyleneoxy or polyalkyleneoxy moieties;
- wherein the bluing agent comprises a polyoxyalkylene chain having from 2 to about 30 repeating units.
Dependencies are inferred from the claim text.