NPG Glycol

Eastman NPG Glycol, Platelets  Application/Uses  Automotive OEM Intermediate for plasticizers Intermediate for synthetic lubricants Polyester polyols for polyurethane coatings Polyester powder coating resins Polyols for rigid and flexible polyurethane foams Reactive polyesters for melamine crosslinked high-solids and coil baking enamels Unsaturated polyesters used in gel coats and synthetic marble  Key Attributes  Excellent thermal stability for low resin color Excellent weathering Good chemical and stain resistance Good chemical, stain, and humidity resistance Good hardness/flexibility balance Ideal glass transition temperature range Outstanding powder flow and fluidization characteristics Outstanding weathering Rapid reactivity during esterification and cure   Product Description   UPAC: 2,2-Dimethyl-1,3-PropanediolCAS: 126-30-7 Eastman NPG glycol is the industry standard glycol component in high-quality polyester resins for industrial coatings and fiberglass-reinforced plastics applications. Most polyester resin formulations contain NPG as the sole glycol component, or it is used in conjunction with a modifying glycol to achieve desired properties. NPG and Eastman PTA (Purified Terephthalic Acid) are the primary components for polyester powder coating resins. Eastman NPG delivers the overall toughness, stain and detergent resistance, and outdoor weathering performance required of coil coatings for appliances and products for exterior applications. Gel coats containing unsaturated polyesters made from NPG and Eastman PIA (Purified Isophthalic Acid) provide excellent weatherability and water and stain resistance. Eastman NPG is also used in polyester polyols for polyurethane coatings for the automotive, industrial maintenance, transportation, and aerospace markets. In the United States, neopentyl glycol may be lawfully used as a reactant for coatings and other products intended for use in contact with foods under specific federal food additive regulations. Contact an Eastman Technical Service Representative for more details. Eastman NPG glycol is available in three forms: Platelets in bags that exhibit excellent caking stability on storage.Bulk molten shipped in tank trucks that require a heated tank for storage.Eastman NPG 90 glycol, a liquid at or above 38°C containing 90 parts NPG and 10 parts water, is delivered in bulk and can be stored at a much lower temperature than molten NPG.  For more information or to request a sample, contact an Eastman Technical Service Representative.   Typical Properties      Property   Typical Value, Units Molecular Weight    104.15 Empirical Formula    C5H12O2  Appearance    @ 25°C (77°F)    White platelets   @ 38°C (100°F)    White platelets Assay    99.2 wt % min. Water    0.3 wt % max. Color, Pt-Co Scale (50% aq. solution)   10 max. Melting Point    124-130°C (255-266°F) Boiling Point    210°C (410°F) Specific Gravity @ 20°C/20°C   1.06 Bulk Density @ 21°C   660-690 kg/m3 (41-43 lb/ft3 ) Flash Point    Tag Closed Cup    109°C (228°F)   Cleveland Open Cup    132°C (270°F) Autoignition Temperature    388°C (730°F) Effects on Metals a   No corrosive effect on mild steel or tin plate. a Slightly corrosive to aluminum.  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.