Description

1,4-Benzenedicarboxylic Acid, Dimethyl Ester, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol is a high-performance, unsaturated polyester resin intermediate, also known as a modified isophthalic-NPG (neopentyl glycol) resin. This specialized polymer is engineered to deliver exceptional durability, chemical resistance, and weatherability in demanding industrial applications. It is a critical raw material for manufacturers in the coatings, composites, and specialty plastics industries seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: Formulation of premium gel coats, topcoats, and primers for marine, automotive, and transportation equipment requiring superior gloss retention and corrosion resistance.
• Fiber-Reinforced Plastic (FRP) Composites: Used as the resin matrix in the production of lightweight, strong composites for construction panels, sanitary ware (e.g., bathtubs, sinks), and chemical storage tanks.
• Artificial Stone & Solid Surface Materials: A key binder in engineered quartz, cultured marble, and other synthetic stone products, providing excellent hardness, stain resistance, and mechanical strength.
• Electrical Laminates: Employed in the manufacture of printed circuit board (PCB) substrates and electrical insulation components due to its good dielectric properties and thermal stability.
• UV-Curable Systems: Serves as a reactive oligomer in coatings and inks that cure rapidly under ultraviolet light, offering high efficiency and low VOC emissions.
• Adhesives and Sealants: Imparts toughness and environmental resistance to high-strength structural adhesives used in aerospace, marine, and construction applications.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Dimethyl Ester, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2,2-Dimethyl-1,3-Propanediol
CAS No.	59779-08-7
Molecular Formula	(C10H10O4 • C9H4O5 • C5H12O2)x
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(1,4-benzenedicarboxylic acid dimethyl ester-co-1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid-co-2,2-dimethyl-1,3-propanediol); Isophthalic Acid-NPG Polyester Resin, modified; Terephthalic Acid Dimethyl Ester / Trimellitic Anhydride / Neopentyl Glycol Copolymer; Unsaturated Polyester Resin based on IPA, TMA, and NPG; NPG-modified IPA/TMA Polyester; Polyester Polyol (unsaturated); CAS 59779-08-7
EINECS	Contact for details

Quality Control

Our production of this advanced polyester resin adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, viscosity, hydroxyl value, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C (59-77°F). Keep away from heat sources, open flames, and incompatible materials such as strong oxidizing agents. Under recommended conditions, the product is typically stable for 12-24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale solid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	5 - 15
Viscosity @ 25°C (cPs)	2000 - 8000 (Solution in Styrene 65%)
Hydroxyl Value (mg KOH/g)	30 - 70
Non-Volatile Content (%)	64 - 68
Gel Time @ 25°C (min)	10 - 25

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.