The present invention relates to the technical field of polymer spectral probes, and particularly to a perchloroethylene derivative and use thereof. The perchloroethylene derivative is prepared by reacting a compound A and a perchloroethylene resin. According to the present invention, the fluorescent polymer can be used as a high-selectivity and high-sensitivity enhanced colorimetric and fluorescent polymer probe for Fe.sup.3+ and Cr.sup.3+ As compared with the organic small molecule spectral probe, the polymer spectral probe has improved mechanical property, film forming property and excellent recyclability, and thus has a strong practicability.

The present invention relates to an electromagnetic millimetre wave absorber material, preferably having a volume resistivity of more than 1 Ω cm, containing solid particles having an aspect ratio (length:diameter) of at least 5 of a first electrically conductive material, particles having an aspect ratio (length:diameter) of less than 5 of a second electrically conductive material and an electrically non-conductive polymer, wherein the absorber material is capable of absorbing electromagnetic waves in a frequency region of 60 GHz or more. The invention also relates to its use and method for absorbing as well as a sensor apparatus comprising said absorber material.

A resin composition for forming a magnetic member of the present invention, which is used for compression molding, includes a thermosetting resin, magnetic particles, and non-magnetic particles having a lower specific gravity and a smaller cumulative 50% particle diameter D.sub.50 than the magnetic particles, in which the resin composition for forming a magnetic member is solid at 25° C.

The present disclosure provides an ink composition and a method for preparing an ink composition. The ink composition includes following compositions in parts by weight salt solution in an amount ranging from 500-1000 parts; iron filings in an amount ranging from 20-30 parts; hydrogen chloride in an amount ranging from 2-5 parts; deionized water in an amount ranging from 40-50 parts; monoglyceride stearate in an amount ranging from 1-2 parts; monolauryl phosphate and polydimethylsiloxane in an amount ranging from 5-10 parts; methacrylate in an amount ranging from 5-10 parts; thermoplastic acrylic resin in an amount ranging from 5-10 parts; sodium dioctyl succinate sulfonate in an amount ranging from 2-5 parts; sodium dodecyl benzene sulfonate in an amount ranging from 2-5 parts; polyoxyethylene octyl phenol ether in an amount ranging from 3-8 parts; and isobutyl p-hydroxybenzoate in an amount ranging from 0.5-1 parts.

The present invention relates to a sol-gel coating composition comprising conductive fillers, intended to make a culinary article compatible with induction.

There is provided a magnetic powder for high frequency use including, in percent by mass, 0.2 to 5.0% C and at least one selected from Group IV to VI elements, Mn, and Ni in a total of 0.1 to 30%, the balance being Fe or/and Co, inclusive 0% for Co), and incidental impurities, wherein the saturation magnetization exceeds 1.0 T and satisfies Expression (1): Co%/(Co%+Fe%)≤0.50. According to the magnetic powder, there is provided a metal magnetic powder having a saturation magnetization exceeding 1.0 T and also having a high FR of 200 MHz or more and a magnetic resin composition including the metal magnetic powder.

Oxygen scavenging polymeric compositions that possess an improved oxygen scavenging capability and can be formed into transparent/translucent thin films are disclosed. A composition can include iron powder, ferrous sulfate heptahydrate (FeSO.sub.4.7H.sub.2O) and glycerol dispersed in polyethylene. Such compositions are useful for creating packaging films with improved oxygen scavenging capability.

A coil component is capable of suppressing permeation of liquid or gas into a magnetic portion and increasing mechanical strength of the magnetic portion. A coil component includes a magnetic portion including soft magnetic metal particles having an insulating oxide layer on a surface thereof, with the soft magnetic metal particles being bonded to each other with the insulating oxide layer interposed therebetween; and a coil portion provided inside or on the surface of the magnetic portion. A mixture containing a resin and inorganic particles is disposed between the soft magnetic metal particles.

The present invention relates to the formation of gels. In particular, the present invention is directed to a method of forming a cross-linked polymer hydrogel using competitive ligand exchange.

The present disclosure relates to a metal particle-containing composition contains at least one thermosetting resin (R), a hardening agent (H), and at least three types of metal particles (P) different from one another. The metal particles (P) contain a solder alloy particle (P1) containing a tin alloy containing at least one metal (A), wherein the metal (A) is a metal that forms a eutectic crystal with tin at a eutectic temperature of 200° C. or lower, at least one metal particle (P2) containing a metal (B) having a melting point exceeding 420° C. in a bulk, the metal particle (P2) having a melting point higher than a solidus temperature of the solder alloy particle (P1), and at least one metal particle (P3) containing a metal (C) that forms an intermetallic compound with a metal contained in the solder alloy particle (P1).