摘要:
The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II):
wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.
摘要:
A water-based ink composition for a ballpoint pen wherein the initial start of writing and writing over time is good, and no blur in handwriting occur and a stable writing performance can be sustained and good handwriting can be continuously formed. A water-based ink composition for a ballpoint pen dissolving or dispersing a coloring agent in an aqueous medium. The aqueous medium substantially contains no water-soluble organic solvent and is composed of water. The water-based ink composition includes a thickening inhibitor together with a shear thinning viscosity-imparting agent. As the thickening inhibitor, one or two or more are selected from a group of polyalkylene glycol, polypropylene glycol derivatives, polyvinyl alcohol, polyvinyl pyrrolidone, cellulose-based polymer compounds, polymer compounds having a polyalkylene oxide group and/or surfactants having a polyoxyethylene group.
摘要:
The present invention relates to a thermochromic color-memory composition containing: (I) an electron donating coloring organic compound, (II) an electron accepting compound, and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reaction of the components (I) and (II): (in the formula, X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20).
摘要:
Disclosed are: a thermochromic color-memory composition which can effectively exhibit a property of memorizing colors photochromically, and which is applicable in a wide variety of fields; and a thermochromic color-memory microcapsule pigment having the composition encapsulated therein. Specifically disclosed are: a thermochromic color-memory composition comprising a homogenously compatibilized blend of (i) an electron-releasing, color-developing organic compound, (ii) an electron-accepting compound, and (iii) a compound represented by the formula (1) as a reaction medium for controlling the color-developing reaction between the compounds (i) and (ii); and a microcapsule pigment having the composition encapsulated therein. (1) wherein X represents any one selected from a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group and a halogen atom; m represents an integer of 1 to 3; and n represents an integer of 1 to 20.
摘要:
The present invention provides a thermochromic coloring color-memory composition which effectively produce a characteristic that colors can be reversibly memorized and maintained and has applicability to various fields and a thermochromic coloring color-memory microcapsule pigment containing the composition. A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (A) and (B):
wherein X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a methoxy group, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20.
摘要:
The present invention relates to a thermochromic color-memory composition containing: (I) an electron donating coloring organic compound, (II) an electron accepting compound, and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reaction of the components (I) and (II):
(in the formula, X represents any of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, and a halogen atom, m represents an integer of from 1 to 3, and n represents an integer of from 1 to 20).
摘要:
The present invention provides a thermochromic color-memory toner having a function that an image formed on a copied matter can be maintained in either in a colored state or a decolored state. A thermochromic color-memory toner containing: at least a microcapsule pigment encapsulating a thermochromic color-memory composition; and a binder resin, in which the microcapsule pigment shows a hysteresis characteristic that, in a temperature-rise process where the pigment is in a colored state, decoloration starts when the temperature reaches temperature t 3 and the pigment completely reaches a decolored state in a temperature region of equal to or higher than temperature t 4 which is higher than temperature t 3 , and, in a temperature-drop process, coloration starts when the temperature reaches temperature t 2 which is lower than temperature t 3 and the pigment completely reaches a colored state in a temperature region of equal to or lower than temperature t 1 which is lower than temperature t 2 , with either the colored state or the decolored state being selectively observed visually in a temperature region between temperature t 2 and temperature t 3 , and the temperature t 1 is in a range of from -50 to 0°C and the temperature t 4 is in a range of from 50 to 150°C; a cartridge including the toner housed therein; an image formation, apparatus; a cartridge set; and an image formation apparatus set.