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Cadmium

Cadmium was discovered simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate. It occurs as a minor component in most zinc ores and therefore is a byproduct of zinc production. It was used for a long time as a pigment and for corrosion resistant plating on steel while cadmium compounds were used to stabilize plastic. With the exception of its use in nickel-cadmium batteries and cadmium telluride solar panels, the use of cadmium is generally decreasing in its other applications. These declines have been due to competing technologies, cadmium’s toxicity in certain forms and concentration and resulting regulations. Cadmium is used as a barrier to control neutrons in nuclear fission. Cadmium oxide is used in black and white television phosphors and in the blue and green phosphors for color television picture tubes. Cadmium sulfide is used as a photoconductive surface coating for photocopier drums. In PVC, cadmium was used as heat, light, and weathering stabilizers. It is used in many kinds of solder and bearing alloys, due to a low coefficient of friction and fatigue resistance. It is also found in some of the lowest-melting alloys, such as Wood's metal. Helium-cadmium lasers are a common source of blue-ultraviolet laser light. They operate at either 325 or 422 nm and are used in fluorescence microscopes and various laboratory experiments. Cadmium is one of six substances banned by the European Union's Restriction on Hazardous Substances (RoHS) directive, which bans certain hazardous substances in electrical and electronic equipment but allows for certain exemptions and exclusions from the scope of the law.

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Chemlon

Chemlon is a trusted name in the nylon compound industry, one that comes in the form of PA6, PA66, and PA612. The Chemlon family of compounds includes glass-reinforced, mineral-filled, impact-modified, and flame-retardant grades.Chemlon performance is known for superior strength and break resistance, dimensional stability, impact resistance, warp resistance, and surface finish.

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Exceval

Exceval is special water-soluble ethylene vinyl-alcohol (EVOH) copolymers. Exceval aqueous solutions show good film forming characteristics and surface activity. It is used as protective colloid for high water resistant emulsion; barrier-film coating.

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Glyoxal

Glyoxal is the smallest dialdehyde. Coated paper and in the textile finishes use large amounts of glyoxal as a crosslinker for starch-based formulations and as a starting material with ureas for wrinkle-resistant chemical treatments. It is used as a solubilizer and cross-linking agent in polymer chemistry. It is a valuable building block in organic synthesis, especially in the synthesis of heterocycles such as imidazoles. A convenient form of the reagent for use in the laboratory is its bis-hemiacetal with ethylene glycol, 1,4-dioxane-2,3-diol.

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Guanine

Guanine is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine. In DNA, guanine is paired with cytosine. It is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Being unsaturated, the bicyclic molecule is planar. The guanine nucleoside is called guanosine. In the cosmetics industry, crystalline guanine is used as an additive to various products, where it provides a pearly iridescent effect. It is also used in metallic paints and simulated pearls and plastics. It provides shimmering luster to eye shadow and nail polish.

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Halstab

Halstab is an liquid heat stabilizers for PVC.

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KOCETAL

KOCETAL refers to polyacetal resin of a copolymer type. And is a material of an excellent quality with features of excellent anti-friction/anti-wear, chemical-resistance, heat-resisting stability, precise dimensions and molding abilities. It is mainly applied in gear or roller, and is used for various purposes over the fields of cars, office equipment and living materials.

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Omadine

Omadine is an insoluble white solid that is sold either as a dry powder,or as an aqueous dispersion for industrial and personal care applications.

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Polymer

Polymer is a large molecule, or macromolecule, composed of many repeated subunits. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers.Polymers are studied in the fields of biophysics and macromolecular science, and polymer science (which includes polymer chemistry and polymer physics).Naturally occurring polymers such as cotton, starch and rubber were familiar materials for years before synthetic polymers such as polyethene and perspex appeared on the market.Polymer properties are broadly divided into several classes based on the scale at which the property is defined as well as upon its physical basis.Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat units are known as copolymers. Poly(styrene), for example, is composed only of styrene monomer residues, and is therefore classified as a homopolymer. Polymer degradation is a change in the properties of a polymer or polymer-based product under the influence of one or more environmental factors, such as heat, light, chemicals and, in some cases, galvanic action. It is often due to the scission of polymer chain bonds via hydrolysis, leading to a decrease in the molecular mass of the polymer.

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