摘要:
Porous particles comprising a polymer binder and at least one additive distinct from any pore stabilizing compound present in the particle, wherein: the polymer binder comprises a solid compositionally continuous phase having an external particle surface; discrete pores are dispersed within the solid compositionally continuous phase, forming internal pore surfaces; and the at least one additive is present primarily in the discrete pores. The additive may further preferably not be present in the solid compositionally continuous phase, and be substantially absent from the external particle surface. A toner set for forming a color electrophotographic image comprising a plurality of different colored toners, where at least one of the different colored toners comprise such porous particles comprising additives, and in a particular embodiment wherein at least two different colored toners each comprise different pigments present primarily in the internal pores. A process of making such porous particles.
摘要:
Porous particles comprising a polymer binder and at least one additive distinct from any pore stabilizing compound present in the particle, wherein: the polymer binder comprises a solid compositionally continuous phase having an external particle surface; discrete pores are dispersed within the solid compositionally continuous phase, forming internal pore surfaces; and the at least one additive is present primarily in the discrete pores. The additive may further preferably not be present in the solid compositionally continuous phase, and be substantially absent from the external particle surface. A toner set for forming a color electrophotographic image comprising a plurality of different colored toners, where at least one of the different colored toners comprise such porous particles comprising additives, and in a particular embodiment wherein at least two different colored toners each comprise different pigments present primarily in the internal pores. A process of making such porous particles.
摘要:
An stable oil-in-oil emulsion is disclosed containing a first oil phase dispersed as droplets in a continuous second oil phase, which droplets have a number median diameter of 10 nm to 1000 nm, wherein the first oil phase is substantially immiscible in the second oil phase and wherein the first oil phase comprises a liquid organic phosphate compound. In one preferred embodiment, the first oil phase comprises colorants, polymers, and/or other additives, depending on the particular use of the emulsion.
摘要:
The present invention provides a dispersion comprising wax particles dispersed with a polymeric dispersant in a water immiscible solvent, wherein the dispersant comprises a wax-compatible polyolefin segment and a polyester compatible oleophilic polar segment. The invention is further directed towards a method of manufacturing such a wax dispersion, and towards methods of manufacturing wax-containing polymer particles by limited coalescence processes employing such a wax dispersion. In particular embodiments, the invention is directed towards chemically prepared toner derived from wax dispersions of the invention that shows improved toner performance.
摘要:
The present invention provides a dispersion comprising wax particles dispersed with a polymeric dispersant in a water immiscible solvent, wherein the dispersant comprises a wax-compatible polyolefin segment and a polyester compatible oleophilic polar segment. The invention is further directed towards a method of manufacturing such a wax dispersion, and towards methods of manufacturing wax-containing polymer particles by limited coalescence processes employing such a wax dispersion. In particular embodiments, the invention is directed towards chemically prepared toner derived from wax dispersions of the invention that shows improved toner performance.
摘要:
A process for preparing a stable, solid particle dispersion of a substantially water-insoluble compound useful in imaging, comprises the steps of:(a) forming a coarse aqueous slurry of solid particles of said compound and a hydrophobic, water-soluble or water-dispersible polymer in an amount of 0.1 to 100% by weight based on the weight of said compound; and(b) milling said slurry for time sufficient to provide particles of the desired average particle size;wherein the polymer is an uncharged or weakly anionically charged water-soluble or water-dispersible homopolymer or copolymer in which at least 10 mole % of the repeat units contain an uncharged pendant group that terminates in (a) a CH.sub.3 unit, (b) a ring containing at least two contiguous CH.sub.2 units, or (c) an aromatic group.The resulting dispersion has dispersed solid particles of said compound having the desired small particle size and is stable toward particle agglomeration, particle growth and needle growth.
摘要:
The invention relates to a patternable coatable electrically conductive layer comprising a fluid-coated electrically conductive material, wherein the fluid-coated electrically conductive material has sufficient conductivity to induce an electric field strong enough to change the optical state of a light modulating material and a display comprising a substrate, at least one patternable coatable electrically conductive layer comprising a fluid-coated electrically conductive material, wherein said fluid coated electrically conductive material has sufficient conductivity to induce an electric field strong enough to change the optical state of a light modulating material which has a first and a second field-switched stable optical state, and an imaging layer comprising said light modulating material disposed over said at least one patternable fluid-coated electrically conductive layer. The invention also relates to a method for making a coatable electrically conductive layer and a method for making a display with a coatable electrically conductive layer.
摘要:
A green color filter having a green filter layer comprising a bridged aluminum phthalocyanine pigment and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm.
摘要:
This invention relates to a photothermographic element comprising a support, at least one photothermographic imaging layer, and at least one filter layer, wherein the filer layer comprises a heat-bleachable composition comprising a barbituric acid arylidene filter dye is in the presence of an effective amount of a base precursor.
摘要:
A photographic element comprising a support, having at least a silver halide light-sensitive layer and a transparent magnetic recording layer, the transparent magnetic layer having ferromagnetic particles in a polymeric binder, ferromagnetic particles having a size of at least 30 m.sup.2 /gm and being present in the transparent magnetic layer in a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 1.times.10.sup.-10 mg/.mu.m.sup.3, the polymeric binder containing up to about 25 weight percent based on the weight of the polymeric binder of a dispersant-cobinder comprising a poly(C.sub.2-4 -alkyleneimine) carrying at least two mono- or poly(carbonyl-C.sub.1-7 -alkyleneoxy) groups.