Description
A liquid epoxy resin
Overview D.E.R. ™ 331 ™ Liquid epoxy resin is a liquid product produced by the reaction of epichlorohydrin and bisphenol A.
CAS No.
CAS No. 020-8251-1205
Introduction D.E.R. 331 Epoxy resin is the most widely used general-purpose liquid epoxy resin. It has been recognized as a standard resin products. And many kinds of resins have been developed on its basis.
A series of room temperature curing agents can be used in conjunction with the liquid epoxy resin, the most commonly used are aliphatic polyamines, polyamides, amidoamines, alicyclic amines and modifications of thesecuring agents. By curing the resin at high temperatures, certain properties such as chemical resistance and glass transition temperature can be improved. If an anhydride or catalytic curing agent is employed, high temperature curing is required, and a long post-curing period is required to obtain final properties.
typical applications Applications for which this product is suitable include:
Adhesive
Pouring and molding
Civil Engineering
Composite materials
Automotive coatings
Can and coil coatings
Marine and protective coatings
Photocurable coatings
Performance (1) | Numerical value | Method |
Epoxy equivalent (g/eq) | 182–192 | ASTMD-1652 |
Percent Epoxy (%) | 22.4–23.6 | ASTMD-1652 |
Epoxy group content (mmol/kg) | 5200–5500 | ASTMD-1652 |
Color (platinum-cobalt method) | Max 75 | ASTMD-1209 |
Viscosity @ 25 °C (mPa • s) | 11000–14000 | ASTMD-445 |
Hydrolyzable chlorine content (ppm) | Max 500 | ASTMD-1726 |
Moisture content (ppm) | Max 700 | ASTME-203 |
Density @ 25 °C (g/ml) | 1.16 | ASTMD-4052 |
Epichlorohydrin content (ppm) | Max 5 | DowM101321 |
Storage period (months) | 24 |
ormanceshould notbe regarded as productspecification.
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