Description

Poly[Trimethylolpropane/Di(Propylene Glycol)-Alt-Adipic Acid/Phthalic Anhydride] is a specialized branched polyester polyol engineered for high-performance polymer formulations. This product matters for its ability to impart excellent flexibility, hydrolytic stability, and adhesion properties to final materials. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing polyurethane foams and resins.

Application

• Polyurethane Coatings & Adhesives: Serves as a key polyol component for flexible and durable coatings, wood finishes, and high-strength adhesives.
• Elastomers & Sealants: Used in formulations requiring excellent rebound resilience, low-temperature flexibility, and long-term weatherability.
• Synthetic Leather & Textile Coatings: Provides the necessary softness, flexibility, and durability for polyurethane-based artificial leather and fabric coatings.
• Resin Modification: Acts as a reactive modifier for alkyd, polyester, and other resins to enhance flexibility and impact resistance.
• Industrial & Maintenance Paints: A critical raw material in corrosion-resistant and protective coating systems for metal and concrete substrates.

Basic Information

Product Name	Poly[Trimethylolpropane/Di(Propylene Glycol)-Alt-Adipic Acid/Phthalic Anhydride], Polyol
CAS No.	68133-07-3
Molecular Formula	(C33H48O12)n (Representative)
Molecular Weight	Varies (Polymer)
Synonyms	Trimethylolpropane-Dipropylene Glycol-Adipic Acid-Phthalic Anhydride Copolymer; Poly(TMP/DPG-alt-AA/PA); Polyester Polyol 68133-07-3; Adipic Acid/Phthalic Anhydride/TMP/DPG Copolymer; Branched Aliphatic-Aromatic Copolyester Polyol; TMP/DPG/AA/PA Polyol; CAS 68133-07-3 Polyol; Polyol Resin for PU
EINECS	Contact for details

Quality Control

Our polyester polyol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent hydroxyl value, acid value, viscosity, and moisture content, meeting precise customer and industry specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	As per grade (e.g., 200 - 350)
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (cPs)	As per grade
Water Content (%)	≤ 0.1
Identification (IR)	Conforms

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