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US 9,556,322 B2Granted
Liquid pigment dispersions
AssigneeColormatrix Holdings, Inc.
InventorMark Rule
Life of this patent
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Abstract
The present invention provides fluid compositions comprising at least one hydrophobic liquid, at least one inorganic pigment, and at least one compatibilization agent comprising at least one phosphate monoester.
Claims14
A fluid composition, comprising:
- at least one hydrophobic liquid,
- at least one inorganic pigment, and
- at least one phosphate monoester compatibilizer substantially free of carboxylic ester linkages;
- wherein the weight of phosphate monoester compatibilizer to inorganic pigment is above 1.5 weight percent and less than about 4.5 weight percent,
- wherein when the hydrophobic liquid is a mineral oil with a viscosity of about 0.60 Poise, the phosphate monoester compatibilizer is a phosphate monoester rich composition where ester functionality is an ethoxylated oleyl alcohol with a hydrophilic/lipophilic balance of 5.7 and an estimated chain length of 27;
- and
- wherein when the hydrophobic liquid is a vegetable oil with a viscosity of about 0.60 Poise and a higher polarity than the mineral oil, the phosphate monoester compatibilizer is selected from the group consisting of (a) a phosphate monoester rich composition where phosphate ester functionality is an ethoxylated C10-C14 alcohol with a hydrophilic/lipophilic balance of 11.2 and an estimated chain length of 30 and (b) a phosphate monoester rich composition where phosphate ester functionality is an ethoxylated tridecyl alcohol with a hydrophilic/lipophilic balance of about 9.6 and an estimated chain length of about 27.
4 more elements
Dependencies are inferred from the claim text.