Resin epoxy
[CAS# 61788-97-4]

Identification

• Classification: Catalysts and additives >> Polymer
• Name: Resin epoxy
• Synonyms: Phenolic epoxy resin
• Molecular Formula: (C₁₁H₁₂O₃)_n
• CAS Registry Number: 61788-97-4
• EC Number: 612-377-4

Properties

• Solubility: 75 mg/mL (DMSO), <1 mg/mL (water)
• Melting point: 152 ºC

Safety Data

• Hazard Symbols: GHS07;GHS09 Warning
• Hazard Statements: H315-H317-H319-H411
• Precautionary Statements: P261-P264-P264+P265-P272-P273-P280-P302+P352-P305+P351+P338-P321-P332+P317-P333+P317-P337+P317-P362+P364-P391-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Skin sensitization	Skin Sens.	1	H317
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Serious eye damage	Eye Dam.	1	H318

Discovory and Applicatios

Epoxy resins were first developed in the early 20th century, with major contributions from Swiss chemist Paul Schlack, who patented the first commercially viable epoxy resin in 1947. The term "epoxy" refers to the presence of epoxy groups in the resin's chemical structure, which are reactive and promote crosslinking. This discovery marked the beginning of a new era in materials science, and it led to a wide range of applications due to the unique properties of epoxy resins.

Epoxy resins are a class of thermosetting polymers characterized by their epoxy functional groups. The most common epoxy resins are based on bisphenol A (BPA) and epichlorohydrin, which results in resins with high molecular weights. When cured with a hardener or catalyst, epoxy resins form a strong crosslinked network with excellent mechanical and chemical properties. Key properties include high adhesion, epoxy resins adhere well to a variety of substrates, including metals, plastics, and wood. Chemical resistance, they resist many chemicals, including acids, bases, and solvents. Thermal stability, cured epoxy resins retain stability and strength at elevated temperatures.

Epoxy resins are widely used in industrial coatings, where they provide a durable layer of protection against corrosion, abrasion, and chemical damage. This makes them ideal for use in harsh environments, such as pipes, bridges, and industrial machinery.

In the adhesives industry, epoxy resins are highly regarded for their strong bonding abilities and are used in construction and aerospace to bond metals, composites, and ceramics. Their high strength and durability make them suitable for use in critical applications.

Epoxy resins are essential in the production of composites, where they serve as a matrix for fiber-reinforced composites, such as carbon fiber and fiberglass composites. These composites are used in aerospace, automotive, and sporting goods for their high strength-to-weight ratio.

Epoxy resins are used in the electronics industry as an encapsulant for electronic components, providing protection against moisture, dust, and mechanical stress. Epoxy resins are also used as an insulating material in electrical applications.

Artists use epoxy resins to create decorative items, including jewelry, sculptures, and paints. The resin's transparency and ability to embed itself into objects make it popular in artistic creations.

Handling epoxy resins requires proper safety precautions, including wearing gloves, goggles, and protective clothing to avoid skin contact and eye irritation. Apply epoxy resins in a well-ventilated area and avoid inhaling fumes. Store epoxy resins in a cool, dry place away from heat and direct sunlight. Proper storage helps maintain the stability of the resin and prolong its shelf life.

Epoxy resins are generally safe when used and handled properly, and local regulations for epoxy resin waste disposal should be followed. Uncured resins should be managed as hazardous waste, while cured epoxy resins are generally considered inert waste.