Eastman™ 1,4-CHDA-HP CAS No.1076-97-7

Application/Uses

- Chemical and pharmaceutical intermediate
- Coil coating resins
- High-solids polyester-melamine baking enamels
- Polyester polyols for polyurethane coatings
- Powder coating resins
- Unsaturated polyester resins for gel coats
- Waterborne polyester resins

Key Attributes

- 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

Product Description

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. 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.

For more information about 1,4-CHDA-HP or to request a sample, contact an Eastman Technical Service Representative.

Typical Properties

Property	Typical Value, Units
Molecular Weight	172.2
Empirical Formula	C8H12O4
Appearance	White to Off-White Powder
Assay	99+ wt % min.
cis Isomer	65 wt % min.
Iron	<15 ppm
Water	1.0 wt % max.
Solubilityin Water, @ 20°C	1 wt %
Specific Gravity@ 20°C/20°C	1.38
Bulk Density	0.56 g/mL (35 lb/ft3)
Melting Point *a	164-167°C (327-333°F)
Flash PointCleveland Open Cup	235°C (455°F)
Chemical Inventory Listings *b	TSCA (USA), EINECS (Europe)

*a Melts quickly to give a hazy liquid due to 30-40% of the high-melting trans isomer. At this melting range, isomerization of the cis to trans begins to take place. Since the trans isomer melts above 300°C, a well defined melting point is not observable.
*b MITI (Japan), AICS (Australia)

Comments

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.