Abstract:
The invention relates to a dental mill blank comprising a pre-sintered porous zirconia material, the porous pre-sintered zirconia material showing a N2 adsorption of isotherm type IV according to IUPAC classification, the porous pre-sintered zirconia material having a Vickers hardness from about 25 to about 150, the dental mill blank comprising means for reversible attaching it to a machining device. The invention also relates to a process of producing a zirconia dental article comprising the steps of providing a dental mill blank comprising a porous pre-sintered zirconia material, placing the dental mill blank in a machining device, machining the porous zirconia material and to a dental article obtained by such a process.
Abstract:
Sintered bodies containing zirconia-based ceramic materials and partially sintered bodies that are intermediates in the preparation of the sintered bodies are described. The zirconia-based ceramic material is doped with lanthanum and yttrium. The grain size of the zirconia-based ceramic material can be controlled by the addition of lanthanum. The crystalline phase of the zirconia-based ceramic material can be influenced by the addition of yttrium.
Abstract:
Material comprising sub-micrometer particles dispersed in a polymeric matrix. The materials are useful in article, for example, for numerous applications including display applications (e.g., liquid crystal displays (LCD), light emitting diode (LED) displays, or plasma displays); light extraction; electromagnetic interference (EMI) shielding, ophthalmic lenses; face shielding lenses or films; window films; antireflection for construction applications, and construction applications or traffic signs.
Abstract:
A process and apparatus for producing a nanovoided article, a nanovoided coating, and a low refractive index coating is described. The process includes providing a first solution of a polymerizable material in a solvent; at least partially polymerizing the polymerizable material to form a composition that includes an insoluble polymer matrix and a second solution, wherein the insoluble polymer matrix includes a plurality of nanovoids that are filled with the second solution; and removing a major portion of the solvent from the second solution. An apparatus for the process is also described, and includes a webline, a coating section, a partial polymerization section, and a solvent removal section.
Abstract:
A polymerizable composition includes: from 10x to 50x moles of at least one hydroxy-functional (meth)acrylate ester having a hydroxyl group; from 0. 1x to 25x moles of at least one metal nitrate compound, wherein the at least one metal nitrate compound comprises at least one metal selected from the group consisting of Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Mo, Pd, Ag, Cd, Sn, Sb, Te, Pt, Au, Pb, Bi, and combinations thereof; and from 0.001x to 0.0035x moles of at least one organic compound having a sterically hindered aminooxyl group, wherein x is a positive number. A polymerized composition, article including the polymerized composition, and method of making the article are also disclosed.
Abstract:
A semiconductor package resin composition of the present invention includes an epoxy resin, a curing agent, inorganic particles, nano-particles surface treated with a silane that contains a photopolymerizable functional group, and a photopolymerization initiator.