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US 3,957,425 AGranted
Concentrated acid red 151 dye-surfactant solution of 15 to 25%
AssigneeE. I. Du Pont de Nemours and Company
InventorVictor Tullio
Life of this patent
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Abstract
An improved aqueous-organic solvent solution, having a pH between 10 and 13, of the disazo dye ##SPC1## Wherein X is a cation, preferably the sodium or lithium cation, the improvement comprising the presence, in combination, of I. 0.1% to 10%, by total weight, of a particular anionic surfactant, and Ii. 0.1% to 3.0%, by total weight, of a particular nonionic surfactant.
Claims5
An improved aqueous-organic solvent solution having a pH between 10 and 13, of the disazo dye ##SPC6##
- wherein X is a cation selected from the group sodium, potassium, lithium, and ammonium, the improvement comprising the presence in the dye solution of a combination of
- i. 0.1% to 10.0%, by total weight, of an anionic surfactant, and
- ii. 0.1% to 3.0%, by total weight, of a nonionic surfactant,
- the ratio of anionic surfactant to nonionic surfactant being between 1 to 10 and 17 to 1, the dye solution having a dye concentration in the range of 15% to 25% based on the total weight of the solution, said solution being nongelling upon dilution with water,
- the anionic surfactant being a water-soluble salt of a substituted-benzene or -naphthalenesulfonic acid wherein the substituents are 1 to 3 alkyl groups of C.sub.1 to C.sub.14,
- the nonionic surfactant being selected from at least one member of the group consisting of condensates of
- a. C.sub.4 to C.sub.24 alkyl primary amines and at least 5 moles of propylene oxide,
- b. C.sub.4 to C.sub.24 alkyl primary amines and at least 5 moles of ethylene oxide,
- c. C.sub.12 to C.sub.24 alcohols and at least 15 moles of ethylene oxide,
- d. C.sub.12 to C.sub.24 alcohols and a least 5 moles of propylene oxide,
- e. C.sub.4 to C.sub.24 alcohols and at least 8 moles ethylene oxide and 2 moles of propylene oxide,
- f. alkyl phenols and at least 8 moles of ethylene oxide, and
- g. ethylene oxide-propylene oxide copolymer having a molecular weight from about 1,000 to 10,000 and a proportion derived from ethylene oxide of 20 to 80 weight percent.
10 more elements
An improved aqueous-organic solvent solution having a pH between 10 and 13, of the disazo dye ##SPC7##
- wherein X is a cation selected from the group sodium, potassium, lithium, and ammonium, the improvement comprising the presence in the dye solution of a combination of
- i. 0.1% to 10.0%, by total weight, of an anionic surfactant, and
- ii. 0.1% to 3.0%, by total weight, of a nonionic surfactant,
- the ratio fo anionic surfactant to nonionic surfactant being between 1 to 10 and 17 to 1, the dye solution having a dye concentration in the range of 15% to 25% based on the total weight of the solution, said solution being nongelling upon dilution with water,
- the anionic surfactant being ##SPC8##
- the nonionic surfactant being selected from at least one member of the group consisting of condensates of
- a. C.sub.4 to C.sub.24 alkyl primary amines and at least 5 moles of propylene oxide,
- b. C.sub.4 to C.sub.24 alkyl primary amines and at least 5 moles of ethylene oxide,
- c. C.sub.12 to C.sub.24 alcohols and at least 15 moles of ethylene oxide,
- d. C.sub.12 to C.sub.24 alcohols and at least 5 moles of propylene oxide,
- e. C.sub.4 to C.sub.24 alcohols and at least 8 moles ethylene oxide and 2 moles of propylene oxide,
- f. alkyl phenols and at least 8 moles of ethylene oxide, and
- g. ethylene oxide-propylene oxide copolymer having a molecular weight from about 1,000 to 10,000 and a proportion derived from ethylene oxide of 20 to 80 weight percent.
10 more elements
Dependencies are inferred from the claim text.