Patent application number | Description | Published |
20080214882 | ACIDIC MESOSTRUCTURED ALUMINOSILICATES ASSEMBLED FROM SURFACTANT-MEDIATED ZEOLITE HYDROLYSIS PRODUCTS - The surfactant-mediated hydrolysis of ZSM-5 zeolite affords five-membered ring subunits that can be readily incorporated into the framework walls of a hexagonal mesostructured aluminosilicate, denoted MSU-Z. The five-membered ring subunits, which are identifiable by infrared spectroscopy, impart unprecedented acidity to the mesostructure, as judged by cumene cracking activity at 300° C. Most notably, MSU-Z aluminosilicate made through the base hydrolysis of ZSM-5 in the presence of cetyl trimethyl ammonium ions exhibits a cumene conversion of 73%, which is 6.7-fold higher than the conversion provided by a conventional MCM-41. This approach to stabilizing zeolitic subunits through surfactant-mediated hydrolysis of zeolites appears to be general. The hydrolysis of USY zeolite under analogous hydrolytic conditions also affords zeolitic fragments that boost the acidity of the mesostructure in comparison to equivalent compositions prepared from conventional aluminosilicate precursors. | 09-04-2008 |
20090123734 | Synthetic layered silicate nanolayers - Nanolayered layered silicate materials of octahedrally arranged units with divalent metal ions at centers of the units covalently linked above and below to tetrahedrally arranged oxygen and hydroxyl units with silicon atoms. The silicate materials contain silanol groups which are reactive to form derivative compositions useful for water purification to remove heavy meal cations. | 05-14-2009 |
20100029832 | COMPOSITES COMPRISING POLYMER AND MESOPOROUS SILICATE - Surfactant-templated mesoporous silicates and mesoporous layered silicate clays having certain porosity parameters are used as reinforcing agents for polymers to make composites. The combination of porosity parameters that allows mesoporous silicates to be competitive with organoclays for the reinforcement of engineering polymers include an average mesopore size of at least 4 nm for surfactant-templated mesoporous silicates and least 2 nm for mesoporous layered silicate clays. | 02-04-2010 |
20110212020 | Zeolites with uniform intracrystal textural pores - Zeolites with uniform intracrystal textural pores between 1 and 10 nm are described. Intracrystal pores, an alumina source and a silica source are reacted in the presence of a silane modified polymer as a porogen and the reaction product is calcined to form the zeolite. The zeolites are useful in catalytic reactions and adsorption processes. | 09-01-2011 |
20110281993 | Composites Comprising Polymer and Mesoporous Silicate - Surfactant-templated mesoporous silicates and mesoporous layered silicate clays having certain porosity parameters are used as reinforcing agents for polymers to make composites. The combination of porosity parameters that allows mesoporous silicates to be competitive with organoclays for the reinforcement of engineering polymers include an average mesopore size of at least 2 nm, a surface are of more than about 50 square meters per gram, a total pore volume of more than about 0.33 cubic centimeters per gram, wherein at least 20% of the total pore volume is due to mesopores about 2 to about 50 nm. | 11-17-2011 |
20110288210 | Mesoporous Silicate Fire Retardant Compositions - Fire retardant or flame retardant additives are incorporated into thermoplastic, thermoset, and/or elastomeric polymer materials to form polymer compositions having improved fire retardant properties. More particularly, the polymer compositions of the present invention comprise additive compositions which have the effect of improving the FR effectiveness, the additive compositions comprising a mesoporous silicate additive. In addition, the polymer compositions of the present invention comprise additive compositions comprising a mesoporous silicate additive and a filler, wherein the filler is a flame retardant addition, an inert filler, or combinations thereof. | 11-24-2011 |
20130284667 | Polymer Filtration Membranes Containing Mesoporous Additives and Methods of Making the Same - Polymer composite membranes containing mesoporous particles which function in part as reinforcing agents, modifiers of polymer surface polarity, and membrane structure modifiers are provided. The composites provide superior resistance to internal damage and pore compaction, increased permeability to water with retention of separation fidelity, and resistance to chemical degradation and mechanical wear, along with minimal shedding of the reinforcing particles under applied pressure. These improvements in properties are particularly desirable for the water purification by membrane filtration methods. | 10-31-2013 |
20140179831 | Mesoporous Silicate Fire Retardant Compositions - Fire retardant or flame retardant additives are incorporated into thermoplastic, thermoset, and/or elastomeric polymer materials to form polymer compositions having improved fire retardant properties. More particularly, the polymer compositions of the present invention comprise additive compositions which have the effect of improving the FR effectiveness, the additive compositions comprising a mesoporous silicate additive. In addition, the polymer compositions of the present invention comprise additive compositions comprising a mesoporous silicate additive and a filler, wherein the filler is a flame retardant addition, an inert filler, or combinations thereof. | 06-26-2014 |