Abstract: A precious metal color effect material is composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a first layer selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium, osmium, iridium and the alloys thereof, which acts as a reflector to light directed thereon, a second layer encapsulating the first layer in which the second layer provides an optically variable reflection of light impinging thereon and a third layer encapsulating the second layer and being selectively transparent to light directed thereon.

Abstract: The invention provides olefin polymerization catalyst exhibiting excellent polymerization activities, a process for olefin polymerization using the catalyst, a novel transition metal compound useful for the catalyst, and an &agr;-olefin/conjugated diene copolymer having specific properties. The olefin polymerization catalyst of the invention comprises (A) a transition metal compound of formula (I) or (II), and (B) an organometallic compound, an oranoaluminum oxy-compound or an ionizing ionic compound. The novel transition metal compound of the invention is a compound of formula (I) wherein M is a transition meal atom of Group 3 or 4 of the periodic table; m is an integer of 1 to 3; R1 is a hydrocarbon group, etc.; R2 to R5 are each H, a halogen, a hydrocarbon group, etc.; R6 is a halogen, a hydrocarbon group, etc.; n is a number satisfying a valence of M; and X is a halogen, a hydrocarbon group, etc.

Abstract: A universal tinting concentrate for both solvent- and water-based paints and coatings. The universal tinting concentrate is a composition which includes a colorant component, such as pigment, colorant, tinting agent and/or metal effect agent; a pigment dispersant including an organic acid containing no more an 70 carbon atoms; and a pH-neutralizing agent. In one embodiment of the invention, the pigment dispersant is represented by the following structure: where r and s are integers and r+s is 6 to 16; and x and y are integers and x+y is 0 to 19; and Z is H or COOH and Z′ is H or COOH.

Abstract: The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound, which is coordinated with a main ligand such as cyclopentadienyl group, and an ancillary ligand. The functional groups in the compound are selected from the group consisting of a hydroxyl group, an alkyl or aryl magnesium halide, a thiol group, a primary amine group, a secondary amine group, a primary phosphorous group, a secondary phosphorous group, etc. The metallocene catalysts according to the present invention have a structure in which an ancillary ligand of a metallocene compound is bonded to the functional groups of a compound having at least two functional groups. A structure of the metallocene catalysts can be varied with the type of a metallocene compound and a compound having at least two functional groups, and the molar ratio of each reactant.

Abstract: Modified particles obtained by a process comprising contacting water-containing particles(a), an organometallic compound(b) and a compound(c) having a functional group containing active hydrogen or a non-proton donative Lewis basic functional group, and having an electron attractive group; a carrier of said particles; a catalyst component for olefin polymerization of said particles; a catalyst for olefin polymerization comprising said particles(A) and a transition metal compound(B), and optionally, an organometallic compound (C); and a method for producing an olefin polymer with said catalyst for olefin polymerization.

Abstract: Multilayer interference pigment consisting of plateletlike titanium dioxide as carrier material, coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by solidification and hydrolysis of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the resulting coat, coating of the resulting titanium dioxide platelets, with or without drying in between, by a wet method with, alternately, a metal oxide hydrate of high refractive index and a metal oxide hydrate of low refractive index by hydrolysis of the corresponding, water-soluble metal compounds, separation, drying and, if desired, calcining of the material obtained.

Abstract: The invention concerns fluids that have a low reactivity with respect to ozone formation, blends thereof, and the replacement of conventional industrial solvents with said fluid or fluid blends in order to reduce troposheric ozone formation.

Abstract: According to the invention a new catalyst precursor is obtained, in which alkoxy or siloxy substitution in the 2-position of 5-membered ring of indenyl compound has been carried out. Thereby a metallocene compound is achieved, in which an oxygen atom is directly bonded to the 2-position of a pentahapto indenyl moiety. The catalyst precursors can be used as components for olefin polymerization catalysts.

Abstract: The invention relates to a process for the bleaching of a mineral pigment or a synthetic pigment, in which process the pigment to be bleached is contacted with a solution which contains peracetic acid in order to obtain a pigment with a raised degree of brightness.

Abstract: The present invention relates to pigment mixtures containing at least two components, component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being special-effect pigments, and to their use in varnishes, paints, printing inks, masterbatches, plastics and cosmetic formulations.

Abstract: An aqueous talc slurry that exhibits minimal foaming comprises talc pigment, a carboxymethyl cellulose (CMC) wetting agent having a molecular weight of between 50,000 and 150,000, an ionic polyacrylate dispersing agent, and has a solids content of between 55% and 65%. The slurry has an entrained air content of less than about 1% as measured after at least several minutes of low shear agitation. A method of preparing a talc slurry that exhibits minimal foaming comprises the sequential steps of mixing CMC wetting agent with water, adding an ionic polyacrylate dispersing agent, and dispersing talc to result in a solids content of between 55% and 65%. The resultant slurry has an entrained air content of less than 1% as measured after at least 30 minutes of low shear mixing. An aqueous talc slurry containing a small amount of xanthan gum stabilizing agent is stable for prolonged periods.

Abstract: The present invention relates to a process for pigmenting a porous metal oxide by applying a solution of a soluble pigment derivative and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the metal oxide's pores. The invention also relates to pigmented porous metal oxides and materials comprising a solid substrate and a surface layer of a pigmented metal oxide.

Abstract: Preactivated unsupported catalysts are prepared by contacting an unsupported olefin polymerization catalyst precursor with an activator, or co-catalyst in a suitable reaction medium and then contacting the mixture with additional solvent to form a preactivated unsupported olefin polymerization catalyst composition. The preactivated unsupported olefin polymerization catalyst composition is useful in a method of polymerizing an olefin monomer by adding it, in solution or slurry, to a gas phase polymerization reactor together with one or more olefins to form a polymer, copolymer, terpolymer, or the like. The use of the preactivated unsupported olefin polymerizaiton catalysts compositions does not plug the catalyst injection nozzle or feed tube when feeding the solution to the gas phase reactor.

Abstract: Organic/inorganic complex porous materials are disclosed having a main skeletal chain containing metal atoms, oxygen atoms, and organic groups. Preferably, the metal atoms, oxygen atoms and organic groups are bound by ionic bonds and/or covalent bonds, and the organic group is bound to at least two metal atoms in the main chain of the skeleton of the porous material. More preferably, 60% or more of the total pore volume in the porous material has a pore diameter in a range of ±40% of the pore diameter, as determined from the maximum peak in a pore size distribution curve. Alternatively, at least one peak is present at a diffraction angle that preferably corresponds to a d value of at least 1 nm in an x-ray diffraction pattern. Method of making such organic/inorganic complex materials are also disclosed.

Abstract: The invention relates to a process for preparing organic pigment granules with a particular particle size wherein an organic pigment with a particle size of 0.01 to 10 &mgr;m is mixed with water, a C1-C4alcohol, a C3-C8ketone or a mixture thereof, a binder and ammonia or a C1-C3amine and an emulsifier. This mixture is pressed in a continuously operating apparatus through one or more apertures each having a size of 0.2-5.0 mm2, the apparatus consisting of at least one conveying device and a shaping section comprising the apertures, and being constructed, and operated with a throughput, such that the pressure in its shaping section does not exceed 10 bar. The granulated product is then dried at a temperature of −50 to 200° C. at atmospheric pressure or under reduced pressure. The invention also relates to pigment granules prepared by the process of the invention, with a particle size of 0.5 to 4 mm, wherein the pigment present essentially has a particle size from 0.01 to 10&mgr;m.

Abstract: Aluminum-phosphinimine complexes function as a component in a catalyst system for the (co)polymerization of ethylene. The inventive catalyst components form a highly productive polymerization system when activated with so-called “ionic activators”. The need for conventional transition metal catalyst metals (such as titanium, hafnium, zirconium or vanadium) is eliminated.

Abstract: A constrained geometry single-site olefin polymerization catalyst is described. The catalyst comprises an activator and an organometallic compound that includes a Group 3 to 10 transition or lanthanide metal, M, and a multidentate ligand characterized by an indolyl group that is covalently linked to an amido group, wherein the indolyl group is &pgr;-bonded to M and the amido group is &sgr;-bonded to M. The indolyl-amido ligand is formed from readily available organic compounds and allows easy synthesis of a constrained geometry catalyst system.

Abstract: Multilayer interference pigment having a blue mass tone, comprised of a platelet-shaped carrier material and a coating which is formed from (i) a first layer of a colorless, transparent metal oxide of high refractive index, (ii) a second layer of colorless, transparent metal oxide of low refractive index and (iii) a third, outer layer of cobalt aluminate, cobalt-containing glass, tungsten bronzes or cobalt oxide, it also being possible for the first and third layer to be swapped around.

Abstract: Colored pearl luster pigment consisting of a core of platelet shaped titanium dioxide and one or more layers of other metal oxides or metal oxide hydrates obtainable by solidifying an aqueous solution of a thermally hydrolyzable titanium compound on a continuous belt, detaching the resulting layer, coating the resulting titanium dioxide platelets, with or without drying in between, with one or more other metal oxides or metal oxide hydrates, for example Fe2O3, Fe3O4, FeOOH or Cr2O3, by a wet method, separating, drying and, if desired, calcining the material obtained.

Abstract: Optical coating compositions containing thin film particulates or pigments that are capable of imparting to the coating preselected optical characteristics or properties, such as selective reflectance, transmission and absorptance of light energy, are comprised of film forming binder and improved high volume pigment particles dispersed in the binder. Each pigment particle is a high volume flake comprised of an inorganic or polymer core having two sides and a thin film optical structure deposited onto each of the two sides of the core. The core occupies a large volume of the coating composition and dramatically reduces the number of flakes and the amount of thin film structures required to produce a coating of given thickness and desired optical properties. The core may also be fabricated to have diffuse and irregular side surfaces in order to render the applied coating visually diffuse and nonspecular. Methods of making the pigment particles are disclosed.