Cyclohexanone is a saturated ketone in which the carbonyl carbon atom is contained in a six-membered ring. Although it is cyclic, its properties are similar to open-chain ketones and can be oxidized in the presence of a catalyst. It undergoes various reactions such as polymerization and substitution, and is an important organic synthesis intermediate.
In the early days, domestic cyclohexanone was only an intermediate product of caprolactam. The manufacturer’s cyclohexanone production capacity matched the caprolactam device, and only a small amount of commercial cyclohexanone was supplied to the market. There are two main reasons for the growth and development of cyclohexanone as an independent industry: First, due to the continuous expansion of solvent uses of cyclohexanone, especially as a high-grade organic solvent, it is used in coatings, inks, adhesives and other industries. It is widely used and has formed a large commodity market; secondly, with the improvement of domestic production level, cyclohexanone plays an important role in the field of chemical synthesis. In addition to being used in the field of chemical fiber to synthesize caprolactam and adipic acid, it can also be used to synthesize caprolactam and adipic acid. Preparation of resins, polycaprolactone, pharmaceutical intermediates and other chemical products.
Applications in the field of chemical synthesis:
1. Caprolactam and hexadiene Acid
The biggest use of cyclohexanone is in the production of caprolactam and adipic acid, which are important monomers in the manufacture of nylon, nylon 66 and other synthetic resins. In the downstream distribution of cyclohexanone, the chemical fiber industry accounts for more than 90% of the total output.
2. Synthetic organic resin
Cyclohexanone can be used to produce cyclohexanone-formaldehyde resin, porphyrin resin, aromatic polyamine solid resin, etc. Compared with similar resins, cyclohexanone-formaldehyde resin (i.e. ketone-aldehyde resin) has the advantages of high hardness, good weather resistance and antioxidant properties, low viscosity, high gloss, and miscibility with various paint raw materials. It is mainly used As a coating resin, it is widely used in oily resins, alkyd resins, amino resins, acrylic resins, epoxy resins and other paint types. It can also be used as a dispersant and brightener for inks and ballpoint pen oils. Porphyrin resin has special anti-corrosion properties and can resist acid corrosion and organic matter dissolution, and can be used as anti-corrosion coatings. Aromatic polyamine solid resin can be used as an additive and chain extender for polyurethane rubber.
3. Dehydrogenation to o-phenylphenol. As an important organic fine chemical product, o-phenylphenol has a wide range of uses and broad prospects. It can be used to synthesize new phosphorus-containing flame retardant materials and antiseptic fungicides. , printing and dyeing auxiliaries, etc. With further research on o-phenylphenol, its application fields will be broader. The cyclohexanone condensation dehydrogenation method is an ideal production process for preparing o-phenylphenol. Its product has high purity and wide application range, and has become a mainstream production process.
4. Polycaprolactone
Cyclohexanone synthesizes ε-caprolactone, ε- Caprolactone is further subjected to ring-opening polymerization under the action of a catalyst to produce polycaprolactone. Polycaprolactone is a white opaque solid with a certain degree of rigidity. In addition, polycaprolactone has good biodegradability, drug permeability, and can stably release drugs for a long time. Therefore, polycaprolactone is It is widely used in drug carriers, coating toughening, degradable plastics, polyurethane modification and other fields.
5. Pharmaceutical intermediates
Cyclohexyldiacetic acid, referred to as CDA, is an important pharmaceutical intermediate prepared from cyclohexanone, acetic acid, acetic anhydride and other raw materials. It can be used as an intermediate for the drug gabapentin and used in the production of anti-epileptic drugs.
6. Polyurethane additives
Cyclohexanone can be used to produce polyurethane additive PC8, and the downstream Polyether foaming catalyst, polyurethane foaming catalyst, etc. The terminals are refrigerator rigid foam, sheets, combined polyether, exterior wall insulation, heat insulation layers, etc.
Cyclohexanone is an important organic chemical intermediate with a wide range of uses. Its terminals are involved in many fields such as clothing, construction, automobiles, medicine, and packaging, and are closely related to our lives. As a major domestic supplier of cyclohexanone, Hualu Hengsheng has first-class service and stable quality. It has established cooperation with various downstream industries and will continue to maintain a stable and high-quality supply of cyclohexanone in the future.
