Abstract: Low tack dry-spun spandex containing barium sulfate of low isoelectric point is provided.

Abstract: A flame retardant composition comprising coated particles, said particles having a core comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate, or mixtures thereof, said core having at least one coating comprising an organo silane, ester, polyol, dianhydride, dicarboxylic acid, melamine formaldehyde, or mixtures thereof; a polymer composition containing said flame retardant; a polymer composition containing a flame retardant comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate or mixtures thereof, and dicarboxylic acid, dianhydride, or mixtures thereof; and a process for preparation of said polymer compositions by increasing extruder throughput are disclosed.

Abstract: A flame retardant composition comprising coated particles, said particles having a core comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate, or mixtures thereof, said core having at least one coating comprising an organo silane, ester, polyol, dianhydride, dicarboxylic acid, melamine formaldehyde, or mixtures thereof; a polymer composition containing said flame retardant; a polymer composition containing a flame retardant comprising melamine phosphate, melamine polyphosphate, melamine pyrophosphate or mixtures thereof, and dicarboxylic acid, dianhydride, or mixtures thereof; and a process for preparation of said polymer compositions by increasing extruder throughput are disclosed.

Abstract: A product and process are disclosed that relate to electroconductive powders based on tantalum, niobium, or phosphorus or any combination thereof doped tin oxide and coatings containing such powders. These powders can be used for making transparent coated films that are conductive and have desirable properties for a number of end uses. Some important end uses are in static dissipative fiber and films, coatings for recyclable containers, materials involved in packaging, where the presence of certain heavy metals is undesirable, transparent conductive coatings, among other uses.

Abstract: A base TiO.sub.2 pigment particles bearing coatings of a boria-modified silica and alumina is disclosed.

Abstract: The disclosure relates broadly to a new class or type of electroconductive powders (ECP), designated as Polytype ECP (PECP), comprising intimate mixtures of several types of ECP powders. PECP mixtures possess a lower electrical resistivity, or a higher electroconductivity, than would be expected from the weighted average of the component ECP powders. PECP are multi-component and may contain many different types of ECP. ECP components of the PECP can be selected from at least one member of the group consisting of crystallites of tin oxide containing antimony in solid solution, crystallites of antimony-containing tin oxide with uniformly distributed amorphous silica, two dimensional networks of crystallites of antimony-containing tin oxide in a unique association with amorphous silica or silica-containing material, filler materials, metal coated powders, conventional ECP materials such as carbon, aluminum powder, among others.

Abstract: Finely-divided particulate additives for polymers with a surface coating comprised of a compound selected from the group consisting of esters of difunctional C.sub.6 -C.sub.40 aliphatic and aromatic carboxylic acids and triesters of phosphoric acid.

Abstract: An amorphous silicon nitride composition consisting essentially of from 95.0% to 99.9% by weight of amorphous silicon nitride and from 0.1% to 5.0% of carbon prepared by the vapor phase reaction of silicon tetrachloride, ammonia, and a gaseous hydrocarbon at temperatures from 1000.degree.C. to 1500.degree.C. This composition is particularly useful in the preparation of fully dense ceramics requiring high strength at elevated temperatures.

Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree. C.

Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree.C.