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Eastman 1,4-CHDA-HP
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Producer: 
Eastman
Eastman™ 1,4-CHDA-HP (1,4-cyclohexanedicarboxylic acid high purity) is a cycloaliphatic diacid offering many unique performance properties to polyester resins for coatings and fiberglass-reinforced plastics. It is also ideally suited improving performance of waterborne, high solids, powder coatings and coil coating applications. Its symmetrical, 1,4-substituted cycloaliphatic ring brings properties ideally suited for high-performance applications in automotive, transportation, industrial maintenance, aerospace, architectural, appliance, and general metal coatings, and gel coats. CHDA is a mixture of cis and trans isomers. It is supplied as white to off-white powder in various package sizes. Eastman also manufactures DMCD, which is the dimethyl ester of CHDA.

Eastman 1,4-CHDA-HP

Producer: 
Eastman
Eastman™ 1,4-CHDA-HP (1,4-cyclohexanedicarboxylic acid high purity) is a cycloaliphatic diacid offering many unique performance properties to polyester resins for coatings and fiberglass-reinforced plastics. It is also ideally suited improving performance of waterborne, high solids, powder coatings and coil coating applications. Its symmetrical, 1,4-substituted cycloaliphatic ring brings properties ideally suited for high-performance applications in automotive, transportation, industrial maintenance, aerospace, architectural, appliance, and general metal coatings, and gel coats. CHDA is a mixture of cis and trans isomers. It is supplied as white to off-white powder in various package sizes. Eastman also manufactures DMCD, which is the dimethyl ester of CHDA.
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Features & Benefits

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Product Highlights
  • An excellent combination of hardness and flexibility in one monomer
  • Better gloss retention and yellowing resistance
  • Better hydrolytic stability
  • Excellent thermal stability for low resin color
  • High solubility in molten glycols
  • Improved corrosion, stain, chemical, and detergent resistance
  • Reduced  orange peel in powder coatings
  • Used in premium gel coat systems that utilize a vinyl ester barrier coat between the gel coat and laminating resin to give superior osmotic blister resistance.
  • Provides gel coats with exceptional performance such as high initial gloss retained gloss upon weathering, and superior anti-yellowing resistance
  • Enhances resin solution viscosity in styrene 
  • Saturated ring structure gives excellent solubility in molten glycols for rapid processing
  • Excellent resin hydrolytic stability
  • Excellent thermal stability for low resin color
  • Excellent combination of hardness and flexibility
  • Improved corrosion and stain resistance compared with linear aliphatic acids
  • Excellent weathering in gel coats
  • Moderate weathering in unstabilized coatings
  • Excellent weathering in stabilized coatings
  • Good humidity resistance
  • Imparts better stain/detergent/salt spray resistance than linear aliphatic diacids, such as AD (adipic acid)
  • Offers more steric shielding of the ester linkages
  • Excellent resin stability in water
  • Better reactivity than PIA during resin synthesis
  • Lower resin viscosity in cosolvent

Applications & Uses

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Recommended Uses
  • Automotive
  • Building materials
  • Coil coatings
  • Construction chemicals
  • Electronic connectors
  • Food flavors & food fragrances
  • Intermediates
  • Kitchen & bath
  • Metal coatings
  • Paints & coatings
  • Pharmaceutical chemicals
  • Process additives
  • Protective coatings
  • Truck/bus/RV
  • Wind energy

Properties

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Physical Properties
ValueUnitsTest Method / Conditions
Solubility in water (at 20°C)1.0wt %
Specific Gravity (at 20/20°C)1.38
Bulk Density0.56g/mL
Melting Point164-167°C
Flash Point (Cleveland Open Cup)235.0°C
Typical Properties
ValueUnitsTest Method / Conditions
Molecular Weight172.2
Empirical FormulaC8H12O4
Assay99+wt %
cis-cis Isomer Content (GC)65.0wt %
Iron<15ppm
Water1.0wt %

Documents (12)

Name
Type
1,4-CHDA-HP (cyclohexanedicarboxylic acid) Sales Specifications Sheet
Other
Improved Hydrolytic Stability of Waterborne Polyester Resins With EASTMAN 1,4-CHDA, and EASTMAN TMPD Glycol
Other
Improved Coil Coating Performance With EASTMAN 1,4-CHDA
Other
High-Solids Polyester Resins for Appliance and General Metal Coatings
Other
EASTMAN Resin Intermediates for Interior Can Coatings
Other