Organic Chemical Materials

Pentaerythritol, as a quaternary alcohol, is easy to be esterified to form acids and esters, so it is mostly used as raw material of alkyd resin coatings, mainly used as building coatings and automotive primer. Pentaerythritol tetranitrate can be obtained by esterification of pentaerythritol and concentrated nitric acid at 5 ~ 15 ℃ in industry. It is a kind of high-performance and strong explosive with higher explosive power than TNT. It is often used as booster or mixed with TNT. It was used extensively in the Second World War. It is a long-acting vasodilator and can treat angina pectoris. Pentaerythritol rosin ester can be prepared by the reaction of pentaerythritol and rosin acid. It can be mixed with dry oil to obtain a coating with good hardness, water resistance and weather resistance. It can be used for varnishes, floor inks, etc. An alkyd resin coating can be prepared by esterification polycondensation of pentaerythritol or glycerin with phthalic anhydride and fatty acid. The properties of alkyd resin can be improved by using different kinds and different amounts of fatty acids, making it suitable for various needs of coatings. It is widely used as metal, wood surface coating, for bridges, railways, derricks, housing construction and other commonly used industrial paint and architectural paint. Alkyd resin has developed rapidly since it entered industrial production in 1927 due to its low price, easy availability of raw materials, easy modification, strong adaptability and good comprehensiveness.

Cyclopentanone is a colorless and transparent oily liquid with a special ether and slightly peppermint like odor. It is insoluble in water, but soluble in ethanol, ether and acetone. It is narcotic at high concentration and can be prepared by oxidation of Cyclopentanol. Cyclopentanone is a kind of organic chemical raw material, which is also a raw material for medicine and perfume industry. It can be used to prepare new perfume methyl hydrojasmonate, as well as for rubber synthesis, biochemical research and insecticide. For example, cyclopentanone and valeraldehyde are used as raw materials to form amyl cyclopentanone through hydralic condensation and dehydration. Then, selective catalytic hydrogenation is used to produce amyl cyclopentanone. Amyl cyclopentanone has strong floral and fruity fragrance, and has jasmine fragrance. It can be used in the daily flavor formula, and its dosage can be less than 20%.

Imidazole is an important fine chemical raw material, which is mainly used in the synthesis of medicine and pesticide and epoxy resin curing agent. It is used as pesticide raw material, synergist of boric acid preparation and preparation of insecticide and bactericide. As an epoxy resin curing agent, it can improve the mechanical properties such as bending, tension and compression of products, improve the electrical properties of insulation and improve the chemical properties of chemical resistance. It is widely used in computers and electrical appliances. It is used as imidazole antifungal drugs in medicine. It is one of the main raw materials of diclofenazole, Econazole, ketoconazole, clotrimazole and other drugs. It can be used as copper rust inhibitor for printed circuit boards and integrated circuits. It is also used as raw materials and organic synthetic intermediates for urea formaldehyde resin curing agent, photographic drugs, adhesives, coatings, rubber vulcanizing agent and antistatic agent. It is also widely used as preservative for fruits.

DMC is a cationic monomer, which can be homopolymerized or copolymerized with other monomers to prepare cationic polymer. The resulting polymer has strong polarity and affinity for anionic substances, so it can be widely used as cationic flocculant. It can be used in sludge dewatering process of sewage treatment plant and wastewater treatment in papermaking, coal flotation, printing, dye and other industries. In addition, DMC can also be used to produce acid resistant super absorbent resin, oilfield chemicals, fiber additives and other fine polymer products.

3,3,5,5-tetramethylbenzidine is an important chromogen reagent.