Abstract: The invention provides a method of making an embossed abrasive article comprising providing a sheet-like foam backing having a first surface and an opposite second surface; providing an abrasive coating comprising abrasive particles and binder over said first surface to provide an abrasive article; and applying under pressure a patterned embossing tool having an embossing surface including at least a pattern of raised areas to the abrasive coating of the abrasive article to provide an embossed pattern at least including depressed areas corresponding to the raised areas of the embossing surface in said abrasive coating and said foam backing to provide an embossed abrasive article.

Abstract: The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating.

Abstract: The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating.

Abstract: The invention provides a backing for an abrasive article comprising a sheet-like polymeric substrate having a first major surface including a pattern of non-abrasive raised areas and depressed areas and an opposite second major surface including a plurality of shaped engaging elements that are one part of a two-part mechanical engagement system. An abrasive product is provided by coating at least the raised areas of the backing with an abrasive coating.

Abstract: The present invention relates to an abrasive article having a shaped abrasive coating on a shaped backing and to a method of making and using the flexible abrasive article. The flexible abrasive article includes a backing bearing separated, shaped non-abrasive structures having a distal end spaced from the backing which are coated with a shaped abrasive coating. The method comprises providing the backing, applying to one surface of the backing a plurality of separated, shaped non-abrasive structures with distal ends, coating the distal ends with a curable composition containing abrasive particles, imparting a shaped configuration to the uncured coating and curing the coating.

Abstract: The invention provides a flexible abrasive product comprising a flexible sheet-like substrate comprising a multiplicity of separated resilient bodies connected to each other in a generally planar array in a pattern which provides open spaces between adjacent connected bodies, each body having a first surface and an opposite second surface; and abrasive particles to cause at least the first surface to be an abrasive surface. A method of making the abrasive is provided by providing the substrate and providing abrasive particles to at least the first surface to provide an abrasive surface.

Abstract: The invention provides a method of making an embossed abrasive article comprising providing a sheet-like foam backing having a first surface and an opposite second surface; providing an abrasive coating comprising abrasive particles and binder over said first surface to provide an abrasive article; and applying under pressure a patterned embossing tool having an embossing surface including at least a pattern of raised areas to the abrasive coating of the abrasive article to provide an embossed pattern at least including depressed areas corresponding to the raised areas of the embossing surface in said abrasive coating and said foam backing to provide an embossed abrasive article.

Abstract: The invention provides a backing for an abrasive article comprising a sheet-like polymeric substrate having a first major surface including a pattern of non-abrasive raised areas and depressed areas and an opposite second major surface including a plurality of shaped engaging elements that are one part of a two-part mechanical engagement system. An abrasive product is provided by coating at least the raised areas of the backing with an abrasive coating.

Abstract: The invention provides a flexible abrasive product comprising a flexible sheet-like substrate comprising a multiplicity of separated resilient bodies connected to each other in a generally planar array in a pattern which provides open spaces between adjacent connected bodies, each body having a first surface and an opposite second surface; and abrasive particles to cause at least the first surface to be an abrasive surface. A method of making the abrasive is provided by providing the substrate and providing abrasive particles to at least the first surface to provide an abrasive surface.

Abstract: The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating.

Abstract: The present invention relates to an abrasive article having a shaped abrasive coating on a shaped backing and to a method of making and using the flexible abrasive article. The flexible abrasive article includes a backing bearing separated, shaped non-abrasive structures having a distal end spaced from the backing which are coated with a shaped abrasive coating. The method comprises providing the backing, applying to one surface of the backing a plurality of separated, shaped non-abrasive structures with distal ends, coating the distal ends with a curable composition containing abrasive particles, imparting a shaped configuration to the uncured coating and curing the coating.

Abstract: The present invention discloses a continuous process for the production of anionically-polymerized organic materials having controlled architectures. The organic materials may be made from one or more temperature-sensitive anionically-polymerizable monomers. The materials are made under plug-flow and temperature-controlled conditions.

Abstract: The present invention provides a flexible abrasive product comprised of an open cell foam backing, a foraminous barrier coating and a shaped foraminous abrasive coating.

Abstract: Porous Zirconia particles of specific gravity of 2.5-3.5 g/cm.sup.3 and mean particle sizes of 30-400 .mu.m can be synthesized using oil emulsion methods from colloids and used for protein adsorption in stable expanded beds. Expanded beds of less than 1.0 settled bed height to diameter (approximately 10 ml bed volume) are stable at linear fluid velocities of at least about 100 cm/hour.

Abstract: Porous zirconia particles of specific gravity of 2.5-3.5 g/cm.sup.3 and mean particle sizes of 30-400 .mu.m can be synthesized using oil emulsion methods from colloids and used for protein adsorption in stable expanded beds. Expanded beds of less than 1.0 settled bed height to diameter (approximately 10 ml bed volume) are stable at linear fluid velocities of at least about 100 cm/hour.

Abstract: The present invention provides improved methods for the preparation of porous inorganic particles. The methods involve combining an aqueous sol containing a colloidal dispersion of inorganic particles with a polymerizable organic material, polymerizing this material, and thereby forming aggregates of colloidal particles and polymer.

Abstract: Crystalline compositions, e.g. zincosilicates, which contain 3-membered rings and have a framework density (FD) of less than 21 tetrahedral atoms per cubic nanometer, and their method of preparation are disclosed. The compositions may be used as ion-exchangers, adsorbents, catalysts, e.g. hydrocarbon conversion catalysts, and catalyst supports.