Viscous water-in-oil type dye or fluorescent brightening agent emulsion and method for the manufacture thereof
AssigneesNippon Kayaku Kabushiki Kaisha, Komatsu Seiren Co., Ltd.
InventorsMasahiro Arashi, Kazuko Iwano, Akira Nakamura
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Abstract
A viscous water-in-oil type emulsion comprising a dye or a fluorescent brightening agent which is sparingly soluble in water and liquid hydrocarbons, water, a liquid hydrocarbon and a nonionic or amphoteric surface active agent. The emulsion is suitable for dyeing or brightening hydrophobic fibers.
Claims8
A stable viscous water-in-oil type emulsion comprising:
- a. 0.02 to 5% by weight of at least one dye or fluorescent brightening agent which is sparinglly soluble in water and liquid hydrocarbons;
- b. 70 to 90% by weight of water;
- c. 6 to 60% by weight of at least one liquid hydrocarbon, said liquid hydrocarbon forming a continuous phase in which said dye is dispersed;
- and
- d. 0.05 to 7.5% by weight of at least one nonionic or amphoteric surface active agent.
A process for the manufacture of a viscous water-in-oil type emulsion containing at least one dye or fluorescent brightening agent which sparingly soluble in water and liquid hydrocarbons, said process comprisng;
- comminuting 0.02 to 5% by weight of said dye or agent into fine particles in the presence of 0.05 to 7.5% by weight of at least one surface active agent selected from the group consisting of nonionic and amphoteric surface active agents, and 6 to 60% by weight of at least one liquid hydrocarbon selected from the group consisting of saturated and unsaturated aliphatic hydrocarbons and aromatic hydrocarbons having boiling points in the range of from 30.degree. to 330.degree.C and halogenated aliphatic hydrocarbons and halogenated aromatic hydrocarbons having boiling points in the range of from 60.degree. to 180.degree.C to form a dispersion;
- and
- mixing said dispersion with 70 to 90% by weight of water to form a water-in-oil type emulsion wherein said liquid hydrocarbon forms a continuous phase containing said dye or agent dispersed therein.
Dependencies are inferred from the claim text.