Description

1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2-Methyl-1,3-Propanediol is a high-performance, specialized polyester copolymer designed for advanced material applications. This engineered polymer offers a unique balance of thermal stability, mechanical strength, and chemical resistance, making it a critical component for demanding industrial formulations. It is primarily sought by manufacturers in the coatings, adhesives, and specialty plastics sectors who require tailored polymer backbones to achieve specific performance characteristics in their final products.

Application

• High-Performance Industrial Coatings: As a key resin component for durable, chemical-resistant, and weatherable coatings for automotive, aerospace, and marine applications.
• Advanced Adhesives and Sealants: Used to formulate structural adhesives with enhanced bonding strength, flexibility, and environmental resistance.
• Engineering Thermoplastics and Composites: Serves as a modifier or primary polymer in composite materials, improving impact resistance and thermal properties.
• Specialty Inks and Toners: Imparts superior fusing properties and image permanence in high-quality digital printing and electrophotographic applications.
• Film and Packaging Materials: Utilized in barrier coatings or as a blend component to enhance the gas barrier and mechanical properties of flexible packaging.
• Powder Coatings: Acts as a core polyester resin for formulations requiring excellent flow, leveling, and finish durability.

Basic Information

Product Name	1,4-Benzenedicarboxylic Acid, Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 2-Methyl-1,3-Propanediol
CAS No.	156258-72-9
Molecular Formula	(C8H6O4·C10H6O5·C4H10O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(1,4-benzenedicarboxylic acid-co-1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid-co-2-methyl-1,3-propanediol); Terephthalic Acid - Trimellitic Anhydride - Neopentyl Glycol Copolymer; TPA-TMA-NPG Copolyester; Polyester resin from TPA, TMA, and NPG; Neopentyl Glycol-Terephthalic Acid-Trimellitic Anhydride Copolymer; NPG-TPA-TMA Terpolymer; Trimellitic Anhydride Modified Poly(neopentyl glycol terephthalate)
EINECS	Contact for details

Quality Control

Our production of this specialty copolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, hydroxyl value, viscosity, glass transition temperature (Tg), and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support 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 strong oxidizing agents and excessive heat sources to maintain polymer integrity.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Acid Value (mg KOH/g)	≤ 10.0
Hydroxyl Value (mg KOH/g)	Contact for details
Glass Transition Temperature (Tg)	Contact for details
Softening Point (Ring & Ball)	Contact for details
Viscosity (mPa·s, @ specified temp/solids)	Contact for details
Color (Gardner)	≤ 3
Identification (IR)	Conforms

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