Encapsulation product, process for producing the same, and ink composition

Abstract

An encapsulation product having excellent properties, e.g., no limitation on core substances. The encapsulation product comprises a wall material comprising a polymer as a major component and a core substance encapsulated therein, wherein the polymer is in contact with the core substance through an ionic surfactant (a) and comprises (1) structural repeating units derived from an ionic polymerizable surfactant (B) and/or an ionic monomer and (2) structural repeating units derived from an ionic polymerizable surfactant (C) having a charge which is the same as or opposite to that of the ionic surfactant (a). Alternatively, the encapsulation product comprises a wall material comprising a polymer as a major component and a core substance encapsulated therein, wherein the polymer comprises structural repeating units of a hydrophobic monomer and is present between (1) an ionic surfactant (b) and (2) an ionic surfactant (c).

Description

technical field [0001] The present invention relates to an encapsulated product, a method for producing the same, and an ink composition. Background technique [0002] Conventionally, encapsulation of various substances has been carried out in many industrial and technical fields. In the printing, paint, and ink industries, the encapsulation of pigments, pigments, etc., is often put into practical use. In addition, in the fields of medicine and agriculture, many attempts have been made to encapsulate drugs for the purpose of enhancing potency, reducing toxicity, imparting stability, delaying effect, and the like. As encapsulation methods, phase separation method (agglomeration method), immersion drying method (interfacial precipitation method), spray drying method, pancoating method, in-liquid curing coating method, interfacial polymerization method, and interfacial inorganic reaction method are generally known. , in situ polymerization, etc. However, in these methods, th...

AI Technical Summary

Problems solved by technology

However, in these methods, there are the following problems: the core material is limited, it is difficult to freely design the thickness of the shell layer (coating layer of the core material), it is difficult to encapsulate the core material, it is difficult to freely design the functional groups on the surface of the capsule, and it is not easy to manufacture. Particles with a uniform surface state, nano-scale encapsulation is not easy, it is difficult to apply to relatively unstable compounds, the solvent used in the preparation of the preparation is easy to mix into the product, or cannot meet the properties of the obtained capsules, and the obtained encapsulated products The problem itself is different according to the purpose

However, even in the colorant obtained by the phase inversion emulsification method or the acid precipitation method, due to the different types of organic solvents such as penetrating agents used in the ink, the polymer adsorbed on the pigment particles tends to detach and dissolve in the ink, Ink dispersion stability or ejection stability, image quality, etc. are often insufficient

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