Description

Propyleneglycol, Polymer With Phthalic Anhydride, Maleic Anhydride, Ethyleneglycol And 3-Oxa2,4-Dimethyl-1,5-Pentanediol is a specialized unsaturated polyester resin intermediate, designed for high-performance applications requiring tailored chemical resistance and mechanical properties. This copolymer's value lies in its versatile backbone, which allows for precise modification of final resin characteristics such as flexibility, reactivity, and durability. It is essential for manufacturers in the coatings, adhesives, and composite materials industries seeking to formulate advanced thermosetting polymers.

Application

• Unsaturated Polyester Resins (UPR): A primary reactive intermediate for the production of general-purpose and specialty polyester resins.
• Gel Coats & Surface Finishes: Used in formulations for marine, automotive, and sanitary ware to provide a smooth, protective, and glossy surface layer.
• Fiber-Reinforced Plastics (FRP): Serves as the polymer matrix in composites for construction, transportation, and chemical storage tanks.
• Industrial Coatings: Formulated into corrosion-resistant coatings for metal substrates and concrete floors.
• Adhesives & Sealants: Imparts strength and chemical stability in high-performance bonding applications.
• Electrical Laminates: Used in the manufacture of printed circuit boards (PCBs) and electrical insulation components.

Basic Information

Product Name	Propyleneglycol, Polymer With Phthalic Anhydride, Maleic Anhydride, Ethyleneglycol And 3-Oxa2,4-Dimethyl-1,5-Pentanediol
CAS No.	71210-70-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Unsaturated Polyester Resin Intermediate; Poly(propylene glycol phthalate maleate) copolymer; Propylene Glycol-Maleic Anhydride-Phthalic Anhydride Copolymer; UPR Prepolymer; Polyester Polyol Resin; Alkyd Resin Intermediate; 3-Oxa-2,4-dimethyl-1,5-pentanediol copolymer; Maleic-Phthalic Polyester Resin
EINECS	Contact for details

Quality Control

Our production of this polyester resin intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters including acid value, viscosity, and hydroxyl value are rigorously monitored. A Certificate of Analysis (COA) detailing specific test results is provided with each shipment 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 (15-25°C). Keep away from heat sources and open flames. Under recommended storage conditions, the product is typically stable. Prolonged exposure to elevated temperatures may lead to premature polymerization.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	20 - 40
Viscosity @ 25°C (cPs)	1500 - 4500
Hydroxyl Value (mg KOH/g)	Contact for details
Solid Content (%)	65 - 70
Gel Time @ 25°C (min)	Contact for details

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