Description

1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol And 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol is a specialized, high-performance polyester polyol resin, also known as a branched alkyd resin, designed for demanding industrial applications. This polymer is valued for its excellent chemical resistance, durability, and ability to form high-quality, cross-linked coatings and adhesives. It is a critical raw material for formulators in the paints & coatings, adhesives, and specialty plastics industries seeking to enhance product performance and longevity.

Application

• High-Performance Industrial Coatings: Used as a polyol component in two-component polyurethane (2K-PU) coatings for automotive, aerospace, and marine applications, providing excellent gloss, chemical resistance, and weatherability.
• Adhesives and Sealants: Serves as a key resin in formulating structural and elastic adhesives, offering strong bonding strength and flexibility.
• Powder Coatings: Acts as a reactive resin in carboxyl-functional polyester systems for powder coatings, contributing to smooth finishes and corrosion protection on metal substrates.
• Elastomers and Casting Resins: Utilized in the production of polyurethane elastomers, offering a balance of hardness, tensile strength, and hydrolytic stability.
• Inks and Overprint Varnishes: Imparts scratch resistance, gloss, and adhesion in high-quality printing inks and protective varnishes for packaging.
• Composite Materials: Functions as a matrix resin or modifier in fiber-reinforced plastics (FRP) and other composite systems.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid, Polymer With 2,2-Dimethyl-1,3-Propanediol And 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol
CAS No.	41941-17-7
Molecular Formula	(C8H6O4 · C5H12O2 · C6H14O3)n
Molecular Weight	Polymer - Variable
Synonyms	Poly(isophthalic acid-co-neopentyl glycol-co-trimethylolpropane); Isophthalic Acid-Neopentyl Glycol-Trimethylolpropane Copolymer; Branched Polyester Polyol; Alkyd Resin (Isophthalic Acid Type); TMP-NPG-IPA Polyester Polyol; Hydroxyl-Functional Polyester Resin; Poly(isophthalic acid/neopentyl glycol/trimethylolpropane); IPA/NPG/TMP Copolymer
EINECS	Contact for details

Quality Control

Our production of this polyester polyol adheres to strict quality management systems to ensure batch-to-batch consistency critical for industrial formulation. Key parameters including hydroxyl value (OHV), acid value, viscosity, color, and glass transition temperature (Tg) are rigorously tested. A comprehensive Certificate of Analysis (COA) detailing these specifications is provided with every shipment to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect reactivity and product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Hydroxyl Value (OHV)	Contact for details
Acid Value	≤ 5.0 mg KOH/g
Viscosity (at 25°C)	Contact for details
Color (Gardner)	≤ 3
Glass Transition Temperature (Tg)	Contact for details
Moisture Content	≤ 0.1 %

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