Description

1,2-Benzenedicarboxylic Acid, Polymer With 2,2-Bis(Hydroxymethyl)-1,3-Propanediol is a high-performance, branched polyester polyol derived from phthalic anhydride and pentaerythritol. This specialized polymer is valued for its excellent thermal stability, chemical resistance, and ability to form hard, durable coatings and resins. It is a critical intermediate for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producers of alkyd resins and plasticizers.

Application

• High-Performance Coatings: A key resin component in industrial, marine, and automotive coatings requiring superior hardness, gloss, and chemical resistance.
• Alkyd Resin Production: Serves as a polyol building block for air-drying and baking alkyd resins used in paints and varnishes.
• Polyurethane Systems: Used as a rigid polyol segment in polyurethane foams, adhesives, and elastomers to enhance structural integrity and heat resistance.
• Plasticizer Intermediates: Employed in the synthesis of polymeric plasticizers that offer low volatility and improved permanence in PVC and other polymers.
• Saturated Polyester Resins: A fundamental raw material for producing saturated polyester resins used in powder coatings and coil coatings.
• Adhesives & Sealants: Imparts toughness and durability to structural adhesives and high-performance sealants.

Basic Information

Product Name	1,2-Benzenedicarboxylic Acid, Polymer With 2,2-Bis(Hydroxymethyl)-1,3-Propanediol
CAS No.	27102-65-4
Molecular Formula	(C8H4O4 · C5H12O4)n
Molecular Weight	Varies (Polymer)
Synonyms	Phthalic Anhydride-Pentaerythritol Polymer; Pentaerythritol Phthalic Anhydride Polymer; Poly(pentaerythritol phthalate); Pentaerythritol Phthalate Resin; PE Phthalate; Phthalic Anhydride-Pentaerythritol Copolymer; Pentaerythritol Ester of Phthalic Acid; PA-PE Polyester Polyol
EINECS	Contact for details

Quality Control

Our production of 1,2-Benzenedicarboxylic Acid, Polymer With 2,2-Bis(Hydroxymethyl)-1,3-Propanediol adheres to stringent quality management protocols. Every batch undergoes comprehensive analysis to ensure consistent properties such as hydroxyl value, acid value, viscosity, and color. Certificates of Analysis (COA) detailing all relevant specifications are provided to guarantee the material meets your precise formulation requirements.

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). Keep away from strong oxidizing agents, strong acids, and strong bases. Under these conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 3
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 5.0
Viscosity (at 25°C, cP)	Contact for details
Softening Point (°C)	Contact for details

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