Abstract:
This invention relates to a silica, a slurry composition, and a method of their preparation. In particular, the silica of the present invention includes aggregated primary particles. The slurry composition which incorporates the silica, is suitable for polishing articles and especially useful for chemical-mechanical planarization of semiconductor substrates and other microelectronic substrates.
Abstract:
The transfer of hydrogen from a paraffin to an olefin is provided. This reaction may be carried out in the presence of a catalyst, such as MCM-36. Especially when the paraffin reactant is an isoparaffin, the olefin produced from the reacted isoparaffin may react with unreacted isoparaffin to also produce an alkylate product.
Abstract:
This invention relates to a new form of crystalline material identified as mordenite-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
Abstract:
Hydroxyl rich zeolites containing 0.1 to 20 weight percent of a hydrogenation/dehydrogenation metal are described which have increased hydrogen adsorption capacity.
Abstract:
Layered divalent metal pentavalent metallate, M(HAO.sub.4).sub.x (RAO.sub.3).sub.y (Z).sub.z wherein M is divalent metal, A is a pentavalent metal, e.g. phosphorus, R is a substituent group other than H or OH, e.g., phenyl, covalently bonded to A, x+y=1, y is greater than 0, z ranges from 0 to 2, inclusive, and Z is an intercalated moiety is prepared by contacting a source of divalent metal with a substituted phosphonic acid-type compound under hydrothermal conditions.
Abstract translation:层状二价金属五价金属盐,M(HAO4)x(RAO3)y(Z)z其中M是二价金属,A是五价金属, 磷,R是除H或OH以外的取代基,例如苯基,共价键合到A,x + y = 1,y大于0,z在0至2之间,包括端值在内,Z是插层部分 通过在水热条件下使二价金属源与取代的膦酸型化合物接触来制备。
Abstract:
A coating composition suitable for producing coatings that are transparent to infrared radiation and can exhibit color stability, such as a jet black color. The coating compositions include a first tint having a low haze and a second tint having a high haze. The tints include visibly absorbing infrared transparent pigments.
Abstract:
A transparent composite article comprising a polyurethane matrix and incorporated within the matrix nanofibers having a diameter up to 5000 nanometers.