KR850005474A - Microcapsules for dyeing fabrics with controlled density - Google Patents

Abstract

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Description

Microcapsules for dyeing fabrics with controlled density

As this is a public information case, the full text was not included.

Claims (20)

Fabrics characterized by a liquid bleach solution having a predetermined solution density and a plurality of microcapsules having a density distribution in the bleach solution within a solution density of about 0.05 g / cc, wherein the microcapsules are dispersed in the bleach solution Treatment composition. The composition of claim 1, wherein the plurality of microcapsules mentioned have one outer layer and one inner core, wherein the density of the outer layer is less than the density of the solution and the density of the inner core is greater than the density of the solution. The composition of claim 2 wherein the inner core mentioned is a brightening or coloring agent, The composition of claim 1, wherein the microcapsules mentioned are present in an amount from about 0.005% to about 1% by weight based on the solution. The composition of claim 2 wherein the outer layer mentioned is polyethylene. The composition of claim 5 wherein the inner core mentioned is ultramarine blue. The composition of claim 6 wherein the solution density mentioned is about 1.08 g / cc and the outer layer of the microcapsules has a density of about 0.91 to about 0.97 g / cc. The composition of claim 6 wherein the weight ratio of the outer layer to the inner layer mentioned is from about 4: 1 to about 7: 1. The composition of claim 8, wherein the plurality of microcapsules mentioned have a diameter of about 0.1 to about 500 microns. Microcapsules, characterized in that the outer polymer layer encapsulates the fine core, wherein the weight ratio of the polymer layer to the fine core is from about 4: 1 to about 7: 1, and the polymer layer mainly consists of polyethylene. A microcapsule according to claim 10, wherein said particulate core contains a brightening or coloring agent. The microcapsule according to claim 10, wherein the particulate core mentioned is ultramarine blue. The microcapsule of claim 10, wherein said microcapsules have an average diameter of about 0.1 to about 500 microns and have an average density of about 1.07 to about 1.08 g / cc. An aqueous solution containing a specific amount of fine particles having a particle diameter of about 0.1 to about 10 microns is prepared, a specific amount of polyethylene and a surfactant are dispersed in the prepared aqueous solution, and then a coagulant is added and mixed to the prepared aqueous dispersion. Characterized in that for producing a pigment capsule having a controlled density distribution. The method of claim 14, wherein the coagulant mentioned provides a polyvalent cation in an aqueous solution. 15. The method of claim 14, wherein each of the polyethylenes and particulates mentioned is present in an amount sufficient to cause the polyethylene weight ratio to particulates in solution to be about 4: 1 to about 7: 1. The method of claim 16, wherein the coagulant mentioned is calcium chloride. 17. The method of claim 16, wherein the mentioned particulate is ultramarine blue having a diameter of about 0.1 to about 10 microns. The method of claim 16, wherein the capsules prepared during mixing have a density distribution between about 1.02 and about 1.10 g / cc. The method of claim 16, wherein the capsule made during mixing has an average density of about 1.08 g / cc. ※ Note: The disclosure is based on the initial application.