Description

1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 1,1-methylenebis[4-isocyanatocyclohexane] is a high-performance, aliphatic polyester-polyurethane copolymer designed for demanding industrial applications. This specialized polymer offers an exceptional balance of durability, chemical resistance, and weatherability, making it a critical component in advanced coating and adhesive formulations. It is primarily utilized by manufacturers in the automotive, aerospace, and industrial maintenance sectors seeking to enhance product longevity and performance under harsh environmental conditions.

Application

• High-Performance Coatings: As a key resin in topcoat formulations for automotive OEM and refinish, aerospace, and heavy-duty industrial equipment, providing excellent gloss retention and resistance to chemicals, abrasion, and UV degradation.
• Advanced Adhesives & Sealants: Used in structural and elastic adhesive systems for automotive assembly, marine applications, and construction, offering strong bonding and flexibility.
• Industrial Maintenance Paints: A critical component in protective coatings for bridges, pipelines, storage tanks, and offshore platforms where long-term corrosion protection is paramount.
• Plastic Coatings: Formulated into coatings for automotive interior components, consumer electronics, and other plastic substrates to improve scratch resistance and aesthetic quality.
• Specialty Inks: Employed in high-durability ink systems for product labeling and outdoor applications requiring resistance to fading and solvents.

Basic Information

Product Name	1,3-Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid, 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid and 1,1-methylenebis[4-isocyanatocyclohexane]
CAS No.	71889-17-3
Molecular Formula	(C8H6O4 · C5H12O2 · C6H14O3 · C6H10O4 · C5H10O4 · C15H22N2O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Aliphatic Polyester-Polyurethane Copolymer; Polyester Polyurethane Resin; Isophthalic Acid Polyester Polyurethane; HDI-based Polyurethane Resin; Aliphatic PU Resin; Weatherable Polyurethane Polymer; Hexamethylene Diisocyanate (HDI) Trimer-based Polyester Polyol Copolymer; 1,1'-Methylenebis(4-isocyanatocyclohexane) polymer with adipic acid, isophthalic acid, neopentyl glycol, trimethylolpropane, and dimethylolpropionic acid
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems, ensuring batch-to-batch consistency critical for formulation performance. Key parameters including viscosity, hydroxyl value, acid value, and color are rigorously tested against internal specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C / 59-77°F). Due to its hygroscopic nature, minimize exposure to atmospheric humidity during handling and keep containers sealed when not in use. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Color (Gardner)	≤ 2
Viscosity (at 25°C)	Contact for details
Solid Content	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 2.0
Identification (IR)	Conforms to standard

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