Description

1,3-Benzenedicarboxylic acid, polymer with 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 2,2-dimethyl-1,3-propanediol, hexanedioic acid and 2-(hydroxymethyl)-2-methyl-1,3-propanediol CAS NO 68715-92-4 is a high-performance, complex polyester resin designed for demanding industrial applications. This polymer is engineered to deliver exceptional durability, chemical resistance, and thermal stability, making it a critical component in advanced coating and composite systems. It is primarily sought after by manufacturers in the automotive, aerospace, and industrial coatings sectors who require reliable materials for protective and functional finishes.

Application

• High-Performance Industrial Coatings: Used as a key resin in formulations for machinery, agricultural equipment, and metal substrates requiring superior corrosion and chemical resistance.
• Automotive OEM and Refinish Paints: Provides excellent gloss retention, weatherability, and mechanical properties for exterior automotive coatings.
• Aerospace and Defense Coatings: Suitable for primers and topcoats on aircraft and military equipment where extreme environmental durability is mandatory.
• Coil and Can Coatings: Employed in pre-coated metal (coil) and food/beverage can linings for its formability and barrier properties.
• Plastic Coatings and Inks: Enhances adhesion and finish quality on plastic components and in specialty printing inks.
• Adhesives and Sealants: Serves as a base polymer in formulations requiring strong bonding and environmental resistance.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 2,2-dimethyl-1,3-propanediol, hexanedioic acid and 2-(hydroxymethyl)-2-methyl-1,3-propanediol
CAS No.	68715-92-4
Molecular Formula	Polymeric substance; Contact for details
Molecular Weight	Polymeric substance; Contact for details
Synonyms	Polyester resin based on isophthalic acid, trimellitic anhydride, neopentyl glycol, adipic acid, and trimethylolpropane; Isophthalic acid/trimellitic anhydride/neopentyl glycol/adipic acid/trimethylolpropane copolymer; IPA/TMA/NPG/AA/TMP copolymer; High-solid polyester resin; Saturated polyester polyol for coatings; Thermosetting polyester resin; Alkyd resin modifier
EINECS	Contact for details

Quality Control

Our production of this advanced polyester resin adheres to strict quality management systems, ensuring batch-to-batch consistency for critical coating applications. Key parameters such as acid value, hydroxyl value, viscosity, color, and glass transition temperature (Tg) are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant 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°C and 25°C (59°F and 77°F). Keep away from heat sources and open flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Clear, viscous liquid or solid flakes
Color (Gardner)	≤ 2
Acid Value (mg KOH/g)	5 - 15
Hydroxyl Value (mg KOH/g)	30 - 100
Viscosity (at 25°C, mPa·s)	2000 - 8000 (Solution in appropriate solvent)
Glass Transition Temperature (Tg)	40°C - 60°C
Solid Content (%)	60 - 70 (Depending on grade)
Solvent	Xylene, Solvent naphtha, or as specified

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