Abstract:
A novel nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. For example, the nickel particulate form can have a BET Specific Surface Area of at least about 1 m2/gm; an average crystallite size less than about 20-25 nm, the nickel particulate form can have at least 10% of the crystallites in the nickel form can have can have a diameter (CIO) of less than about 10 nm, and/or there are on average at least about 10 15 surface crystallites per gram nickel. A ratio of BET SSA to C50 for the nickel particulate form can be at least about 0.1 x 10 9 m/gm and preferably at least about 0.4 x 10 9 m/gm. Methods of preparation and use are also provided.
Abstract translation:提供了一种新颖的镍颗粒形式,其有效地与有机液体中的含磷配体形成零价镍络合物以形成氢氰化催化剂。 镍颗粒形式的颗粒包括镍微晶。 例如,镍颗粒形式可以具有至少约1m 2 / gm的BET比表面积; 平均微晶尺寸小于约20-25nm,镍颗粒形式可以具有镍形式的至少10%的微晶可以具有小于约10nm的直径(CIO),和/或存在 平均每克镍至少约1015个表面微晶。 镍颗粒形式的BET SSA与C50的比可以为至少约0.1×10 9 m / gm,优选至少约0.4×10 9 m / gm。 还提供了制备和使用方法。
Abstract:
Textile-based electrodes include a fabric portion having stretch-recovery non-conductive yarns and an electrically conductive region having stretch-recovery electrically conductive yarn filaments. The electrodes can further include float yarns and can be configured in a textured or ribbed construction. When incorporated into a garment, the electrodes can be used to monitor biophysical characteristics, such as the garment wearer's heart rate.
Abstract:
A surface functional electro-textile fabric incorporates energy-active, electrically conductive or optically conductive fibers and nonconductive fibers in a woven or knitted textile fabric. The weave or knit pattern is selected so as to form floats of the electrically conductive fibers on at least one surface of the electro-textile fabric. The electro-textile fabric can be incorporated into an antenna structure that interacts with high frequency electromagnetic radiation, particularly in the frequency range of DC to 100 GHz.
Abstract:
A surface functional electro-textile fabric incorporates energy-active, electrically conductive or optically conductive fibers and nonconductive fibers in a woven or knitted textile fabric. The weave or knit pattern is selected so as to form floats of the electrically conductive fibers on at least one surface of the electro-textile fabric. The electro-textile fabric can be incorporated into an antenna structure that interacts with high frequency electromagnetic radiation, particularly in the frequency range of DC to 100 GHz.
Abstract:
The invention provides polyester polyol compositions, useful as components of polyurethane and polyisocyanurate polymers, prduced from cyclohexane oxidation reaction byproducts, such as water extracts and non-volatile distillation residues from the reaction. Such byproducts of industrial processes for preparation of adipic acid and caprolactam, important intermediates in the production of various types of nylon, have hitherto largely been used only as fuels. The present invention provides value-added products, methods for making, and methods for using the byproduct-derived polyester polyol compositions. For example, the invention provides polyurethane (PU) and/or polyisocyanurate (PIR) polymers made using the polyol compositions and polyfunctional isocyanates. The PU and PIR polymers can be used as adhesives, binders (e.g., for wood fibers), coatings (e.g., for controlled release fertilizers), and foams.
Abstract:
A surface functional electro-textile fabric incorporates energy-active, electrically conductive or optically conductive fibers and nonconductive fibers in a woven or knitted textile fabric. The weave or knit pattern is selected so as to form floats of the electrically conductive fibers on at least one surface of the electro-textile fabric. The electro-textile fabric can be incorporated into an antenna structure that interacts with high frequency electromagnetic radiation, particularly in the frequency range of DC to 100 GHz.
Abstract:
A nickel particulate form is provided that efficiently forms a zero-valent nickel complex with a phosphorus-containing ligands in an organic liquid to form a hydrocyanation catalyst. Particles in the nickel particulate form comprise nickel crystallites. The nickel particulate form has a BET Specific Surface Area of at least about 1 m /g and an average crystallite size no greater than about 100 nm. The nickel particulate form further has a sulfur content of at least 0.1 wt.%. Test procedures for use within a possible preparation sequence, complexes with, in particular, bidentate phosphorus-containing ligands, e.g. bis-phosphite Ligand (V), their preparation and use in hydrocyanation of, in particular; olefins, such as 3-pentenenitrile, are also provided.
Abstract:
As described herein, nickel treated with sulfur provides an effective source of nickel atoms for generating nickel-phosphorus-containing Iigand complexes, in particular with bisphosphites, which are useful as olefin hydrocyanation catalysts, especially in ADN production.
Abstract:
A functional elastic composite yarn comprises an elastic member that is surrounded by at least one functional covering filament(s). The functional covering filament has a length that is greater than the drafted length of the elastic member such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member. The elastic composite yarn may further include an optional stress-bearing member surrounding the elastic member and the functional covering filament.
Abstract:
As described herein, nickel treated with sulfur provides a surprisingly effective source of nickel atoms for generating nickel-phosphorus-containing ligand complexes useful as hydrocyanation catalysts.