an inorganic layered compound dispersion prepared by cleaving the inorganic layered compound to a thinner layer level and capable of providing high corrosion resistance and gas barrier properties when utilized in the form of a coating composition or a gas barrier coating composition; a gas barrier coating composition with which films having high transparency and satisfactory gas barrier properties can be obtained at low cost when the gas barrier layers are formed in a thinner film form and, when the film thickness is increased, films having good transparency and still better gas barrier properties can be obtained; and plastic- or paper-based gas barrier packaging containers having high gas barrier performance characteristics as obtainable by application of such a gas barrier coating composition.
The present invention provides:
an inorganic layered compound dispersion, wherein an inorganic layered compound (b) is dispersed using a peroxide (a) in a dispersion medium.
摘要:
Ready-to-use water dispersible pigment compositions containing water-insoluble, hydrophilic pigments are provided. The compositions comprise a stable dispersion of the pigment such as a porphyrin pigment, carmine, curcumin and a carotenoid in the form of bodies of an average size which is at the most 10 µm is provided. The pigment bodies are dispersed without the use of a surface active substance in an aqueous phase comprising a hydrocolloid. The natural pigment compositions which are useful for colouring of food products and pharmaceuticals do not migrate in the products and they are acid stable. The compositions are useful in coating compositions for tablets and dragees.
摘要:
Ready-to-use water dispersible pigment compositions containing water-insoluble, hydrophilic pigments are provided. The compositions comprise a stable dispersion of the pigment such as a porphyrin pigment, carmine, curcumin and a carotenoid in the form of bodies of an average size which is at the most 10 µm is provided. The pigment bodies are dispersed without the use of a surface active substance in an aqueous phase comprising a hydrocolloid. The natural pigment compositions which are useful for colouring of food products and pharmaceuticals do not migrate in the products and they are acid stable. The compositions are useful in coating compositions for tablets and dragees.
摘要:
A ready-to-use water dispersible pigment composition containing at least 5 % by weight of water is provided. The composition comprises a stable dispersion of a water-insoluble and/or hydrophobic natural pigment such as a carotenoid, curcumin, a porphyrin pigment or vegetable carbon black in the form of bodies of an average size which is at the most 10 νm is provided. The pigment bodies are dispersed without the use of a surface active substance in an aqueous phase comprising a hydrocolloid. The natural pigment in compositions which are useful for colouring of food products and pharmaceuticals do not migrate in the products. The compositions are useful in coating compositions for tablets and dragees.
摘要:
The invention relates to spherical metal oxide particles with a particle diameter of between 5 nm and 10000 nm. Said particles contain at least one oxidic compound of elements that are selected from the first to fifth main groups, the transition metals and/or the lanthanoids and have particulate prominences on their surface.
摘要:
A low viscosity high thermal conductivity polymer-based boron nitride composition and a surface- treated boron nitride material for use as a filler in this composition, and methods of preparation is described.
摘要:
A process is disclosed for the production of a purified pigment, in which electrolyte ions and fine particles of the opposite polarity have been either completely or partly eliminated so that the purified pigment will not become a hard cake in a slurry state and will hardly undergo secondary aggregation even when dried. The purified pigment is obtained by bringing an aqueous dispersion of particles of the pigment into contact with an H-type cation-exchange resin or an OH-type anion-exchange resin, whereby counter ions are ion-exchanged to either lower or raise the pH of the aqueous dispersion. As a result, the dispersion stability of the pigment particles is destroyed, and only acidic or basic pigment particles are caused to sediment and are hence separated. A process for the production of a highly-classified purified pigment is also provided. An aqueous dispersion of pigment particles is used after conducting ion-exchange treatment and deflocculating the pigment particles. The aqueous dispersion is classified relying upon differences in sedimentation velocity among the pigment particles. followed by ion-exchange treatment to destroy the stability of the aqueous dispersion.
摘要:
Es wird ein kontinuierliches Verfahren zu einer aufeinanderfolgenden Behandlung von mit geringen Gasgeschwindigkeiten fluidisierbaren feinteiligen Feststoffen mit mindestens zwei verschiedenen Gasen oder Gasgemischen in einem auf konstantes Niveau geregelten Fließbett im Gegenstrom vorgestellt. Dabei führt man die einzelnen Behandlungsgase verschiedenen Zonen der Behandlungsstrecke zu, wobei der Querschnitt in jeder Zone so gewählt wird, daß eine weitgehend konstante, lineare Strömungsgeschwindigkeit der Gase über die gesamte Behandlungsstrecke eingehalten wird und wobei die Länge der einzelnen Zonen so aufeinander abgestimmt wird, daß der in jeder Zone durchzuführende Behandlungsvorgang bis zu einem gewünschten Grade abläuft.
摘要:
Disclosed are a pearlescent pigment and a preparation method therefor, wherein the pigment has a multilayered structure including a low-refractive index material layer between high-refractive index material layers on a glass flake substrate and thus has high color intensity, various colors depending on the viewing angle, and an improved sparkling effect. The pearlescent pigment according to the present invention comprises: a glass flake substrate having a D10 value of 40-80µm, a D50 value of 160-250µm, and a D90 value of 350-600µm and a thickness of 500 nm or more; and a metal oxide layer coated on the substrate, the metal oxide layer having a structure of a first metal oxide layer/an intermediate oxide layer containing MgO·SiO2/a second metal oxide layer.