Description

1,3-Benzenedicarboxylic Acid Polymer With 1,4-Benzenedicarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol, 1,2-Ethanediol And α-Hydro-ω-Hydroxypoly(Oxy-1,4-Butanediyl) is a specialized copolyester resin engineered for high-performance applications. This polymer's unique composition, incorporating both rigid aromatic dicarboxylic acids and flexible polyether diols, provides an exceptional balance of durability, chemical resistance, and processability. It is a critical raw material for manufacturers in the coatings, adhesives, and advanced materials sectors seeking to enhance product longevity and performance under demanding conditions.

Application

• High-Performance Industrial Coatings: Used as a resin binder in coil coatings, can coatings, and automotive finishes for superior weatherability, gloss, and chemical resistance.
• Specialty Adhesives and Sealants: Serves as a key component in formulating reactive hot-melt adhesives and structural sealants requiring strong adhesion and flexibility.
• Engineering Thermoplastics Modification: Acts as a compatibilizer or additive to improve the impact strength, processability, and surface characteristics of polyester-based engineering plastics.
• Fiber and Film Production: Utilized in the manufacture of specialty fibers and films where a combination of tensile strength and elasticity is required.
• Elastomers and TPUs: Incorporated into thermoplastic polyurethane (TPU) formulations to tailor hardness, resilience, and hydrolysis resistance for various molded parts.

Basic Information

Item	Detail
Product Name	1,3-Benzenedicarboxylic Acid Polymer With 1,4-Benzenedicarboxylic Acid, 2,2-Dimethyl-1,3-Propanediol, 1,2-Ethanediol And α-Hydro-ω-Hydroxypoly(Oxy-1,4-Butanediyl)
CAS No.	140384-51-6
Molecular Formula	(C8H6O4 · C8H6O4 · C5H12O2 · C2H6O2 · (C4H8O)nH2O)x
Molecular Weight	Variable (Polymer)
Synonyms	Poly(1,3-benzenedicarboxylic acid-co-1,4-benzenedicarboxylic acid-co-2,2-dimethyl-1,3-propanediol-co-1,2-ethanediol-co-α-hydro-ω-hydroxypoly(oxy-1,4-butanediyl)); Isophthalic Acid-Terephthalic Acid-Neopentyl Glycol-Ethylene Glycol-PTMG Copolyester; Copolyester resin based on IPA/TPA/NPG/EG/PTMG; Polyester Polyol (aromatic, PTMG-based); Aromatic Copolyester Polyol; PTMG Modified Aromatic Polyester; IPA/TPA/NPG/EG/PTMG Copolymer
EINECS	Contact for details

Quality Control

Our production of this copolyester resin adheres to a strict quality management system. Every batch is characterized for critical parameters including acid value, hydroxyl value, viscosity, and glass transition temperature (Tg) to ensure consistent performance and batch-to-batch reproducibility. Comprehensive Certificates of Analysis (COA) detailing these specifications are provided and available upon request 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 (typically 15-25°C). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product properties.

Specification

Item	Specification
Appearance	White to off-white pellets or granules
Identification (IR)	Conforms to structure
Acid Value	≤ 2.0 mg KOH/g
Hydroxyl Value	Tailored (e.g., 30 - 120 mg KOH/g)
Viscosity (at specified temp.)	Tailored (e.g., 500 - 5000 mPa·s)
Glass Transition Temperature (Tg)	Tailored (e.g., -30°C to 20°C)
Moisture Content (KF)	≤ 0.1 %

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