Resorcinol CAS 108-46-3

Resorcinol is an important organic chemical product and synthetic intermediate with a wide range of uses. In tires, hoses and tapes, the use of resorcinol-formaldehyde resin (RF resin) to impregnate rayon and polyamide fiber cords can increase the bonding between the cords and rubber. RF resin can be cured at room temperature and neutral conditions, and will not be eroded by water and will not cause the decomposition of the adherend. Therefore, in addition to being widely used in the rubber industry, it can also be used as an adhesive for synthetic fibers, wood, metal, ceramics, plastics, etc. Treating steel cord with resorcinol-triaryl cyanurate-formaldehyde resin can improve the adhesion of steel wire to rubber. Adding resorcinol, hexamethylenetetramine and silica to the rubber compound can improve the reinforcement of short fibers in the rubber matrix.

Because the polycondensation reaction and curing speed of resorcinol and formaldehyde are fast, it can be used in the modification of phenolic resin and urea-formaldehyde resin to accelerate the curing of the resin and the product has better water resistance. Bis(diphenylphosphonic acid)resorcinol ester synthesized from resorcinol is a non-halogen flame retardant with high thermal stability, suitable for modified polyether, polycarbonate, Plastics such as ABS resin and various thermoplastic resins and polyurethane. Resorcinol has a certain bactericidal effect, and is often used to make ointments and externally applied to treat skin diseases caused by fungi; airgel made of resorcinol and formaldehyde can be used as an electrode of a chemical battery, when saline wastewater Or when seawater passes through the electrode, a large amount of ions in the water can be removed, so that saline waste water can be treated or seawater can be desalinated. Ether compounds prepared from resorcinol can be used as stabilizers and plasticizers for cellulose ethers or esters, crosslinking agents for epoxy resins and unsaturated polyesters, and are also important chemical reagents.

The 2,4-dihydroxybenzoyl ketone prepared by condensation of resorcinol and acetaldehyde can be used to prepare the intermediate of the drug “ethoxylated flavone” for treating coronary heart disease. The 2,4-dihydroxyphenyl ethyl ketone produced by the condensation of resorcinol and propionic acid can be used in the pharmaceutical industry to prepare the neurostimulant “Huisulin”. 2,4,6-trinitro-resorcinol obtained from trinitration or first nitrosation and then oxidation of resorcinol can be used as explosives and propellants containing nitrocellulose. The 2,4-dihydroxybenzoic acid produced by the reaction of resorcinol and carbon dioxide is an intermediate for the preparation of dyes, photosensitive materials and cosmetics. As an intermediate in the pharmaceutical industry, it is often used in the synthesis of fungicides and antirheumatic drugs. In the dye industry, instead of salicylic acid as the coupling component, azo dyes with darker color and higher intensity can be synthesized than salicylic acid as the coupling component. In addition, it can also be used to prepare various halogenated, nitrated or sulfonated products of resorcinol.

The m-aminophenol synthesized from resorcinol can be used in medicine to make p-aminosalicylic acid (PAS), a good medicine for treating tuberculosis. In the dye industry, it can be used to make N,N-dimethyl-3-aminophenol, which is used as intermediate of mordant dye and basic dye and photographic developer; it can be used to make 3-anilinophenol, an intermediate of azo dye, to make fur Dyes such as fur brown, fur yellow and so on. In addition, it can also be used as a catalyst for the polymerization of propylene oxide and dimerization of acrylonitrile, as a corrosion inhibitor for metals in alkaline media, and for the production of herbicides, insecticides, antioxidants, stabilizers and developers, etc. . 7-Hydroxyvanillin synthesized from resorcinol and maleic anhydride has antifungal, antibacterial and choleretic activities, and can be used in ointments of medicines; it can also be used to prepare antihypertensive medicines. In addition, it can also be used as a fluorescent whitening agent for plastics, textiles, soaps, and detergents. 4-Methyl-7-hydroxycoumarin obtained from the reaction of resorcinol and ethyl acetoacetate can be used to mask the yellow color in soaps, detergents, paraffin, plastics, fibers and paper, and can also be used as an ultraviolet ray shielding agent. In addition, resorcinol can also be used for fur dyeing and hair dye, as a chemical analysis reagent, as a raw material for the synthesis of plastic polybenzobisoxazole, azo dyes, fluorescent dyes and acid eosin, for Synthetic agricultural films, synthetic insecticides (masphos), herbicides (ethoxyfluorfen, etc.) and intestinal disinfectants, etc.