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DMCD (Dimethyl Cyclohexanedicarboxylate)
DMCD is a cycloaliphatic diester chemical intermediate typically used to make polyester resins and plasticizers. It provides excellent weathering, flexibility, and thermal stability in gel coats.
Eastman's DMCD is a cycloaliphatic diester with low melting capabilities that is used to synthesize polyesters, polyamides, alkyds, and plasticizers. It provides similar performance properties to CHDA, except that the reaction with glycols is a transesterification where methanol evolves from the reaction instead of water. When DMCD is used to create coating resins, they gain a better balance of hardness and flexibility while imbuing a high degree of resistance to chemicals, stains, humidity, and corrosion. These resins are typically used in industrial and automotive applications. DMCD may also be used to create water-based polyester resins because it imparts excellent hydrolytic stability.
Specifications
Appearance: Partially crystallized liquid Viscosity at 20°C, cPs: 8 Flash point, °C (°F): 132 (270) Boiling point at 100 mmHg, °C (°F): 176 (349) Vapor pressure at 170.8°C, mmHg: 50 Specific gravity at 35°C/4°C: 1.102 CAS number: 94-60-0
Features & Benefits
Solid form is easy to melt Lower resin solution viscosity Better resin hydrolytic stability Better coating flexibility Chemical and corrosion resistance
Problems Solved
Poor hydrolytic stability in polyester resins Inadequate balance of coating hardness and flexibility Difficult-to-use high-viscosity aromatic acids
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