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US 2006/0079636 A1Published application
Liquid pigment dispersion and curative agents
OwnerKelly Gasper, Constantine Kondosinventors
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OwnerKelly Gasper, Constantine Kondosinventors
Estimating the term…
A liquid pigment dispersion is disclosed. The dispersion comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials that together have a freezing point that is room temperature or below. The pigment remains dispersed in the blend, even if the dispersion is subjected to freezing and thawing. A curative blend comprising at least two active hydrogen-containing materials, which is liquid at room temperature, is also disclosed. The dispersions and curative blends of the present invention can be solvent-free. Resins and prepolymers comprising the curative blends of the invention, either pigmented or unpigmented, are also disclosed.
1-31. (canceled)
A prepolymer formed from the reaction between a diisocyanate, a polyol and/or a polyamine, and a pigment dispersion, wherein the pigment dispersion is liquid at room temperature and below and comprises a pigment dispersed in a blend of two or more active hydrogen-containing materials, wherein each active hydrogen-containing material may have a different freezing point.
A polyurethane prepolymer formed from the reaction between a diisocyanate, a polyol, and a curative blend comprising:
35-36. (canceled)
The prepolymer of claim 36, wherein the diisocyanate is 4,4′-dicyclohexylmethane diisocyanate and the polyamine is polyalkylene diamine.
Dependencies are inferred from the claim text.