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US 6,642,283 B2Granted
Stable novel black polyurethane article colorants
AssigneeMilliken & Company
InventorsMark E. Ragsdale, Sandy G. Belue
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AssigneeMilliken & Company
InventorsMark E. Ragsdale, Sandy G. Belue
Estimating the term…
Polyurethane article black colorants which comprise a novel blue polymeric anthraquinone colorant, rather than the previous standard polymeric triphenylmethane blue-type colorants are provided. Such a novel blend of colorants to produce black colorations within the target polyurethane foams exhibits very low color degradation within polyurethane foams, primarily due to the stability and resiliency of the novel anthraquinone-based polymeric colorant in the presence of high isocyanate levels, as well as large amounts of reactive tertiary amines (from catalyst residue, for example). A black colorant comprising such a novel blue polymeric colorant, as well as polyurethane foams comprising such a novel black coloring agent and methods of producing such foams are all contemplated within this invention.
A black-colored polyurethane article comprising a mixture of colorants, wherein at least one colorant present within said mixture is a blue anthraquinone colorant having at least one aromatic amino pendant group attached to the 1-, 4-, or both positions of said anthraquinone colorant.
A black colorant formulation comprising a mixture of colorants, wherein at least one colorant present within said mixture is a blue anthraquinone colorant having at least one poly(oxyalkylene) chain is attached, through at least one aromatic amino group, to the 1-, 4-, or both positions of said anthraquinone colorant.
A black polyurethane foam article comprising a mixture of colorants wherein at least one colorant is a polymeric blue colorant, wherein said foam article comprises residue from a reactive amine catalyst, and wherein said foam article exhibits substantial uniformity in color throughout the entire article.
A black polyurethane foam article comprising a mixture of colorants wherein at least one colorant is a polymeric blue colorant, wherein said foam article comprises at least 15% by weight of an isocyanate component, and wherein said foam article exhibits substantial uniformity in color throughout the entire article.
Dependencies are inferred from the claim text.