Caprolactam

معرفی محصول و مشخصات :

Caprolactam was prepared for the first time in the late 1800s through the cyclization of ε-aminocaproic acid, which is the hydrolysis product of caprolactam. Caprolactam is a precursor of nylon 6, which is a synthetic polymer with abundant consumption.

specifications	description
molecular formula	(CH2)5C(O)NH
Other names	ε-Caprolactam, 1-Aza-2-cycloheptanone, 2- Azacycloheptanone, Capron PK4 , Cyclohexanone iso-oxime , Extrom 6N, Hexahydro-2-azepinone , Hexahydro-2Hazepin- 2-one (9CI) , Hexanolactame
Molecular mass (g/mol)	113.16
Melting point (degrees Celsius)	69.2
Density (grams per cubic centimeter)	1.01
Physical state	solid
Color	White
dangers	It is stimulating and very little toxic

Physical and chemical properties of caprolactam

Applications of caprolactam

It is used in the production of synthetic fibers, especially nylon 6, synthetic leather, plastics, films, softeners and car paint. Almost all the caprolactam produced is consumed in the production of nylon 6, which is also used to produce fiber. Among these items are all kinds of textiles such as clothing, other textiles such as umbrellas, tents, parachutes, luggage and sleeping bags, floor coverings such as carpets and rugs. Industrial fibers such as tire fibers, vehicle belts, mechanical plastic devices, ropes, nets, etc. can be mentioned. This material is also used to produce resins, which play the role of thermoplastics used in engineering, especially in the automotive, electrical and electronic sectors. It is also used to cover the external surfaces of films.

Polyamide (Nylon 6)

Introduction and specifications

For the first time in 1935, polyamide (nylon) was introduced to the market in the form of synthetic fibers, and around 1950, various types of it were commercially introduced to the market for making parts by injection methods. s well as extruder devices. This polymer is available in the form of cylindrical grains (granules) in milky color (in pure form) and other colors, and it is formed with the help of pressure injection and blowing devices a

Applications of nylon 6

Nylon 6 is made up of tufting floor coverings, cream yarn, carpets, clothing, especially socks. Types of nylon threads with high strength are used in cases such as strengthening car and airplane tires. These fibers have excellent resistance to wear. Due to its high strength and hardness, nylon fibers are used for productions such as ropes, safety belts, parachutes, thread and fishing nets. If there is a need for cut nylon fibers, the production of a number of filament makers with a large number of filaments are fed to converting machines after stretching and folding.

Technical study

Caprolactam production process

General comparison of commercial processes for the production of caprolactam

Process	دسترسی به مواد اولیه
Production of caprolactam from cyclohexane HPO NOx or HSO	Production of cyclohexane from benzene
Production of caprolactam from phenol	Production of phenol from methanol and benzene
Production of caprolactam from toluene	import
Production of caprolactam from benzene	Special area of Imam Khomeini port
Photonitration method	Cyclohexane: produced from benzene
Oximation method	Cyclohexane: production from benzene

2- Nylon-6production process

In general, there are two methods for the commercial production of nylon-6 from caprolactam.

• Hydrolytic polymerization:

• Anionic polymerization:

3- Propylene oxide production process

The production of propylene oxide is carried out by various methods, which include:

• Hydrochlorination method

• Oxidation method

• Direct oxygen injection method

• Electrochemical method