Definition: Compounds having multiple epoxy groups
When an epoxy resin is allowed to react with various curing agents, an infusible, insoluble, three-dimensional, hardened material is formed. The features listed below indicate how this high-performance, multipurpose resin can be used for a wide variety of applications.
<Reaction with Representative Hardeners>
<Self Polymerization>
Appropriate choice of Hardener for a desired curing temperature
In addition to the basic bisphenol A resin mentioned above, other specialized resins are manufactured and sold to give the cured material specific property enhancements.
Following are the main specialized resins
Either alone or in combination with bisphenol A epoxy resin, these special resins can give specific features to the cured product to satisfy application requirements.
A Japanese Ministry of Health, Labor, and Welfare toxicity study concluded that bisphenol A liquid epoxy resin and bisphenol F liquid epoxy resin are mutagenic. Therefore, when handling, it is necessary to follow the guidelines provided by the Ministry. In addition, as substances that can cause allergic dermatitis, official handling guidelines have been established by the Japanese Labor Standards Director and the Ministry of Health, Labor and Welfare. Similarly, precautions are needed in handling the curing agent. Especially amine-type curing agents can cause allergy-like dermatitis in people. In order to avoid direct contact, please use protective cream, gloves, goggles, and apron. Avoid inhalation of vapor and particulates by working in a well-ventilated area and working upwind of the material.
In the event of skin contact, avoid use of solvents, wipe the affected area with a dry cloth, wash thoroughly with soap and water, and then apply hand cream.
In the event of eye contact, flush eyes with water for more than 15 minutes, and then seek medical attention.
Various requirements are addressed by changing the molecular weight and/or the basic structure of the epoxy resin. A broad range of products are available in liquid, solid, or powder form, depending on the application.
