Abstract:
The subject invention provides a method of measuring very low levels of DBNPA. Novel DBNPA analogs are linked to a carrier protein and injected into an animal to provoke an immune response. The immune response is utilized to provide a hybridoma cell line which produces monoclonal antibodies which react with DBNPA. The antibodies are employed in a competition enzyme-linked immunosorbent assay (ELISA) to detect and measure DBNPA.
Abstract:
A thermoplastic elastomeric blend composition comprising: (A) from 99 to 1 weight percent of a styrenic block copolymer; and (B) from 1 to 99 weight percent of an interpolymer of (1) at least one aliphatic alpha -olefin and (2) at least one vinylidene aromatic monomer or (3) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer, wherein said vinylidene aromatic monomer is present in an amount of from 0.5 to 15 mole % or from 17 to 65 mole % in said interpolymer, and fabricated articles made from such composition.
Abstract:
A heat transfer fluid is disclosed which comprises a glycol, a phosphate, and a copolymer additive which is a copolymer of an ethylenically substituted carboxylic acid and an aldehyde. A method for preparing the heat transfer fluid comprises admixing 92 to 96 weight percent of one or more glycols; 2 to 4 weight percent of a phosphate; and 0.01 to 0.25 weight percent of the copolymer additive. Precipitation of phosphate salts is inhibited in phosphate-containing glycol-based fluids by the addition of the copolymer additive before mixing the fluid with water.
Abstract:
A method for the preparation of concentrated, stable iron chelate solutions of alkali metal polyamino succinic acids is disclosed. The method involves the co-feeding of an alkaline alkali-metal succinate solution and a ferric salt solution into a vessel.
Abstract:
Described is a process for preparing dihydroxy stilbene compounds which includes the steps of: (a) combining (i) at least one coumpound containing one phenolic hydroxyl group per molecule with (ii) a Lewis acid which may be mixed with the compound at a temperature above the melting point temperatures of (i) and (ii) to form a solution of (i) in (ii), which will remain in liquid form when the temperature of the solution is brought to a temperature in the range of from -30 DEG C to 10 DEG C, wherein (i) and (ii) were combined in amounts sufficient to provide a mole ratio of (ii):(i) of at least 0.3:1.0; (b) contacting (iii) at least one alpha-haloketone compound or the corresponding ketal or hemiketal, or at least one alpha-haloaldehyde compound or the corresponding acetal or hemiacetal with the solution obtained from step (a) under reaction conditions sufficient to form the corresponding halogen-containing bisphenol compound, wherein (iii) is employed in an amount of at least 10 mole percent of the molar amount of (i) present in the solution obtained from step (a); and (c) dehydrohalogenating the halogen-containing bisphenol compound under reaction conditions sufficient to form the corresponding dihydroxy stilbene compound. It has been discovered that the Lewis acid provides an effective solvent for the reaction between (i) and (ii) in step (a), thereby reducing or eliminating the need for using inert reaction solvents. A substantial absence of inert solvents in the reaction mixture results in a process that is relatively fast and selective to the desired product.
Abstract:
The present invention is a multilayered composite comprising: an inner core layer of a crystalline polymer and a glass filler, and an outer skin layer of a crystalline polymer and a mineral filler wherein the outer skin layer surrounds the inner core layer.
Abstract:
A process for reducing emissions of dioxins and furans in a stack gas from the incineration of organic materials, comprising: incinerating the organic material; adding one or more dioxine-reactive materials which are deposited on the flyash or on a supplemental particulate support optionally added upstream of an apparatus for removing flyash from the gaseous products of incineration prior to their emission in a stack gas, and which under the conditions prevailing in the apparatus will react with the dioxins in and from said gaseous products from said incineration step to produce one or more corresponding dioxin-derivative materials which are preferably substantially retained on the flyash or supplemental particulate support or both through the incinerator and which are periodically or continuously removed with said flyash and supplemental particulate support from the flyash/particulate removal apparatus, or in the alternative, adding the one or more dioxin-reactive materials via the addition of a particulate material including the one or more dioxin-reactive materials therein or thereon upstream of the flyash removal apparatus; and, maintaining the one or more dioxin-reactive materials in contact with the dioxins in sufficient concentrations and for a sufficient time to reduce the concentration of dioxins in and from said gaseous products through the formation of said dioxin-derivative materials.
Abstract:
The invention relates to a poly(arylamine) composition of one or more compounds of from 5 to 1000 of monomer. The monomers useful in the preparation of poly(arylamines) comprise two amino moieties wherein each amino moiety is bound to three aryl moieties wherein two halo moieties are optionally bound to the monomer. The invention further relates to films prepared from such poly(arylamines), as well as electrophotographic devices and electroluminescent devices containing such films, such as polymeric light-emitting diodes. The invention also relates to processes for the preparation of poly(arylamines). The polymers of the invention form films which are relatively high molecular weight charge transport compounds which are capable of forming films. The films can be prepared using relatively small amounts of polymer while still maintaining the desirable properties of transporting positive charges. The processes disclosed herein provide efficient means of preparing the disclosed compounds.
Abstract:
Bridged, group 4 Metal complexes useful as olefin polymerization catalyst components corresponding to the formula: L1ZL2MXmX'n or a dimer, solvated adduct, chelated derivative or mixture thereof, wherein: L1 is a partially salturated tricyclic group, especially octahydrofluorenyl, L2 is a substituted cyclopentadienyl group that is bound to M by means of delocalized pi -electrons, said cyclopentadienyl group being substituted at one and only one of its two distal positions with a bulky ligand group; Z is divalent bridging substituent; X each occurrence is a monovalent, anionic moiety having up to 40 non-hydrogen atoms, optionally, two X groups may be covalently bound together forming a divalent dianionic moiety having both valences bound to M, or, optionally 2 X groups may be covalently bound together to form a neutral, conjugated or nonconjugated diene that is bonded to M by means of delocalized pi -electrons (whereupon M is in the +2 oxidation state), or further optionally one or more X and one or more X' groups may be bonded together thereby forming a moiety that is both covalently bound to M and coordinated thereto; m is 1 or 2 and is equal to two less than the formal oxidation state of M, except when 2 X groups together form a neutral conjugated or non-conjugated diene that is pi -bonded to M, in which case m is equal to the formal oxidation state of M; X' is a neutral ligand having up to 20 non-hydrogen atoms, and n is a number from 0 to 3.
Abstract:
This invention relates to heteroatom substituted cyclopentadienyl-containing ligands, metal complexes containing these ligands, catalyst systems prepared from catalyst components comprising these metal complexes. The metal complexes contain a heteroatom-Cp bond or a ring heteroatom-Cp bond in the 2-position of the Cp. In preferred metal complexes the ligand is a 2-heteroatom substituted indenyl group. The catalyst systems for olefin plymerization may be used at high temperatures, are highly active and produce high molecular weight polymer.