The invention provides dispersed inorganic mixed metal oxide pigment compositions in a hydrocarbon media utilizing a dispersant having polyisobutylene succinic anhydride structure reacted with a non-polymeric amino ether/alcohol to disperse a mixed metal oxide pigment in the media. The metal oxide pigment is of the type used to color ceramic or glass articles. A milling process using beads is also described to reduce the mixed metal oxide particle size to the desired range. A method of using the mixed metal oxide dispersion to digitally print an image on a ceramic or glass article using the dispersion jetted through a nozzle and subsequently firing the colored article is also described.

The present invention relates to a polymeric aromatic amide dispersant, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks.

The present invention relates to a solid dispersion, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same and, more particularly, to a solid dispersion in which an inorganic or organic material-derived isotropic or anisotropic substance is used as a dispersoid and dispersed at room temperature in a solid-phase dispersion medium such as polyols and sugars, whereby the dispersion can be easily stored and used, reduce transportation cost, prevent or alleviate the aggregation or precipitation caused during the storage of products, with the results of working efficiency improvement and processing cost reduction, and, when applied to polyurethane, can increase strength and provide an improved strength, compared to conventional curing agent, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same.

The present invention relates to a pickering emulsion composition using polyimide particles and a method for preparing the same. The pickering emulsion stabilized by the polyimide particles according to the present invention has a very stable dispersed phase and does not cause flocculation, creaming, coalescence and phase separation even after a long time, and has an advantage of being capable of forming both an oil-in-water type emulsion and a water-in-oil type emulsion. Further, the polyimide particles used in the present invention can be synthesized in a simple manner and have partial wettability without the surface treatment and pH control so that they can be easily used for the emulsion stabilization.

The invention relates to a process for preparing a dispersion of a lipophilic compound in a continuous hydrophilic phase, the morphology of which is submicronic. During the preparation of this dispersion, there is applied, by means of a device which produces a shearing gradient less than 5000 s.sup.−1, a shear stress from 100 to 5000 Pa during the addition of the lipophilic compound in the continuous phase which comprises a rheology-modifying compound selected from anionic copolymers, preferably an anionic polymer, in particular an ASE polymer or a HASE polymer. The dispersed particles of the lipophilic compound are nanometric particles whose size is less than 1 μm. The dispersion, particularly in the form of an emulsion, can be used in numerous fields.

The invention relates to an emulsion containing or consisting of (A) 40.00 to 97.98 wt. % of at least one hydrocarbon, (B) 2.00 to 59.98 wt. % of water or an aqueous solution of a salt which does not fall under the following definition according to (C) and (C) 0.02 to 8.00 wt. % of a salt of an amino amide of a fatty acid, containing at least one primary, secondary or tertiary amino group, and an acid component of general formula (I) ##STR00001## in which R.sup.1 is a linear or branched, saturated or mono-unsaturated or poly-unsaturated hydrocarbon radical with 1 to 40 C atoms, R.sup.2 is an alkylene radical or arylalkylene radical with 2 to 20 C atoms and X is a radical which contains at least one acid group, m=0 or 1, n=1 to 30, wherein the weight proportions of components (A), (B) and (C) relate to the sum of the masses of these components and this is 100 wt. %. The invention also relates to a method for the production of the emulsion, to an oil-based drilling mud and to a method for creating and stabilizing a drill hole.

The present invention relates to a polymeric dispersant containing an tertiary amide linkage between the aromatic anchoring group and a solubilizing chain, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having two or more residual carboxylic acid groups or a sulfonic acid group and a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks containing said dispersant.

The present invention is related with the obtaining process and use of branched germinal zwitterionic liquids based on either bis-N,N-dialkyl-N-polyether-betaine or bis-N,N-dialkenyl-N-polyether-betaine or bis-N,N-dicycloalkyl-N-polyether-betaine or bis-N,N-diaryl-N-polyether-betaine, to be applied as modifiers of the wettability of rocks such as limestone, dolomite, sandstone, quartz or heteregenous lithologies, under the presence of brines having high content of divalent ions such as calcium, magnesium, barium or strontium, under high temperature and high pressure within enhanced oil recovery processes in order to increase the oil production. The branched germinal zwitterionic liquids of the present invention have moreover the property to act as viscosity reducers of heavy oils having high content of polar fractions, both for extraction and production, and transport and storage operations, so allowing increase the production level of this oil type. An additional advantage shown by the zwitterionic liquids, derived from their molecular structure, is that they can be handed in such a manner that can be dissolved by water, hydrocarbon or other polar and non-polar solvents.

Water-soluble copolymers based on a) 50 to 97% by weight of one or more non-ionic, ethylenically unsaturated monomers containing amide groups, b) 0.1 to 10% by weight of one or more ethylenically unsaturated monomers containing silane groups c) 1 to 30% by weight of one or more ionic, ethylenically unsaturated monomers and optionally one or more further ethylenically unsaturated monomers, are useful as protective colloids for inorganic particle and water-insoluble polymer particle dispersions. wherein the figures in % by weight add up to 100% by weight.

An acrylic acid polymer having a weight average molecular weight M.sub.w in the range from 3500 to 2000 g/mol and a polydispersity index M.sub.w/M.sub.n≤2.5, wherein 30% to 60% of the acid groups of the acrylic acid polymers have been neutralized with calcium ions, 30% to 70% of the acrylic acid polymers have been neutralized with sodium ions and 0% to 10% of the acid groups of the acrylic acid polymers have not been neutralized.