25718-70-1

Basic information

• Product Name: Hexanedioic acid, polymer with 1,3-benzenedimethanamine
• Synonyms: Hexanedioic acid, polymer with 1,3-benzenedimethanamine;CL172
• CAS NO: 25718-70-1
• Molecular Formula: (C8H12N2.C6H10O4)x
• Molecular Weight: 282.34
• Mol File: 25718-70-1.mol
• Article Data: 1

Chemical Properties

• Melting Point: 243 °C
• Appearance: /
• Water Solubility: Insoluble in water
• CAS DataBase Reference: Hexanedioic acid, polymer with 1,3-benzenedimethanamine(CAS DataBase Reference)
• NIST Chemistry Reference: Hexanedioic acid, polymer with 1,3-benzenedimethanamine(25718-70-1)
• EPA Substance Registry System: Hexanedioic acid, polymer with 1,3-benzenedimethanamine(25718-70-1)

Safety Data

• Hazardous Substances Data: 25718-70-1(Hazardous Substances Data)

Usage

General Description

Hexanedioic acid, polymer with 1,3-benzenedimethanamine, also known as nylon 66, is a type of synthetic polymer that is commonly used in a variety of industrial and commercial applications. It is produced by reacting hexanedioic acid (adipic acid) with 1,3-benzenedimethanamine (m-phenylenediamine) in a polymerization process. Nylon 66 is known for its high tensile strength, durability, and resistance to abrasion, making it suitable for use in products such as textiles, industrial fibers, automotive parts, and electrical components. It is also used in the production of nylon 66 resin, which is used in the manufacture of various plastic products. Overall, nylon 66 is a versatile and widely used material with a wide range of applications in various industries.

Upstream product

• 1477-55-0 1,3-di(aminomethyl)benzene 
• 124-04-9 Adipic acid 

Relevant articles and documents

Polyamide-6,6-based blocky copolyamides obtained by solid-state modification

Copolyamides based on polyamide-6,6 (PA-6,6) were prepared by solid-state modification (SSM). Para- and meta-xylylenediamine were successfully incorporated into the aliphatic PA-6,6 backbone at 200 and 230 °C under an inert gas flow. In the initial stage of the SSM below the melting temperature of PA-6,6, a decrease of the molecular weight was observed due to chain scission, followed by a built up of the molecular weight and incorporation of the comonomer by postcondensation during the next stage. When the solid-state copolymerization was continued for a sufficiently long time, the starting PA-6,6 molecular weight was regained. The incorporation of the comonomer into the PA-6,6 main chain was confirmed by size exclusion chromatography (SEC) with ultraviolet detection, which showed the presence of aromatic moieties in the final high-molecular weight SSM product. The occurrence of the transamidation reaction was also proven by 1H nuclear magnetic resonance (NMR) spectroscopy. As the transamidation was limited to the amorphous phase, this SSM resulted in a nonrandom overall structure of the PA copolymer as shown by the degree of randomness determined using 13C NMR spectroscopy. The thermal properties of the SSM products were compared with melt-synthesized copolyamides of similar chemical composition. The higher melting and higher crystallization temperatures of the solid state-modified copolyamides confirmed their nonrandom, block-like chemical microstructure, whereas the melt-synthesized copolyamides were random. Copyright