Description

1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethylpropane-1,3-Diol And 1,3-Isobenzofurandione is a high-performance, unsaturated polyester resin intermediate. This specialized polymer is engineered to deliver exceptional thermal stability, mechanical strength, and chemical resistance in demanding industrial applications. It is a critical raw material for manufacturers in the coatings, advanced composites, and specialty plastics industries seeking to enhance product durability and performance.

Application

• High-Performance Coatings: Used as a key resin component in industrial, marine, and automotive coatings requiring excellent weatherability and corrosion resistance.
• Fiber-Reinforced Plastics (FRP): Serves as the polymer matrix in the production of composite materials for automotive parts, construction panels, and marine structures.
• Electrical Laminates: Employed in the formulation of resins for printed circuit boards (PCBs) and electrical insulation components.
• Gel Coats & Surface Finishes: Provides a smooth, durable, and protective surface layer for bathtubs, sanitaryware, and boat hulls.
• Adhesives & Sealants: Imparts strong bonding properties and environmental resistance in structural and specialty adhesive formulations.
• Molding Compounds: Used in Sheet Molding Compound (SMC) and Bulk Molding Compound (BMC) for manufacturing complex, high-strength molded parts.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethylpropane-1,3-Diol And 1,3-Isobenzofurandione
CAS No.	88849-49-4
Molecular Formula	(C8H6O4 · C5H12O2 · C8H4O3)n
Molecular Weight	Polymer - Contact for details
Synonyms	Isophthalic Acid-NPG-Phthalic Anhydride Copolymer; Poly(isophthalic acid-co-NPG-co-phthalic anhydride); Unsaturated Polyester Resin based on Isophthalic Acid, Neopentyl Glycol, and Phthalic Anhydride; NPG-IPA-PA Polyester Resin; Isophthalic Polyester Resin; UPR (Isophthalic/NPG Type); 1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol and 1,3-isobenzofurandione
EINECS	Contact for details

Quality Control

Our production of this unsaturated polyester resin adheres to strict quality management systems. Every batch undergoes comprehensive analytical testing to ensure consistent properties such as acid value, viscosity, and reactivity. Certificates of Analysis (COA) detailing key specifications are available upon request, providing full traceability and compliance data for your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources, sparks, and open flame. For long-term storage, consider under an inert atmosphere to prevent premature cross-linking.

Specification

Item	Specification
Appearance	Pale yellow to amber viscous liquid or solid
Acid Value (mg KOH/g)	10 - 30
Viscosity (at 25°C, cP)	Contact for details
Non-Volatile Content (%)	60 - 70
Gel Time (min)	Contact for details
Identification (IR)	Conforms

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