Description

1,3-Isobenzofurandione, Polymer With 2,5-Furandione And Oxybis[Propanol] CAS NO 26301-25-7 is a specialized polymeric resin derived from phthalic anhydride, maleic anhydride, and dipropylene glycol. This product is valued for its ability to form durable, cross-linked coatings and composites with excellent chemical resistance and adhesion properties. It is primarily sought by manufacturers in the coatings, adhesives, and advanced composite materials industries seeking high-performance binders.

Application

• As a key resin component in high-performance industrial and marine coatings.
• In the formulation of specialty adhesives and sealants requiring strong bonding and environmental resistance.
• As a cross-linking agent or modifier in unsaturated polyester resins (UPR) for composite materials.
• For the production of gel coats and laminates in the fiber-reinforced plastic (FRP) industry.
• In the synthesis of alkyd resins for improved drying time and film hardness.
• As a reactive intermediate for further chemical synthesis in polymer research and development.

Basic Information

Product Name	1,3-Isobenzofurandione, Polymer With 2,5-Furandione And Oxybis[Propanol]
CAS No.	26301-25-7
Molecular Formula	(C8H4O3·C4H2O3·C6H14O3)n
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Phthalic Anhydride-Maleic Anhydride-Dipropylene Glycol Copolymer; Maleic-Phthalic Anhydride Copolymer with Dipropylene Glycol; Poly(phthalic anhydride-co-maleic anhydride-co-dipropylene glycol); Dipropylene Glycol Phthalate Maleate; Unsaturated Polyester Prepolymer based on PA, MA, and DPG; PA/MA/DPG Copolymer; 26301-25-7; Phthalic Anhydride Polymer with Maleic Anhydride and Oxybis[propanol]
EINECS	Contact for details

Quality Control

Our production of 1,3-Isobenzofurandione, Polymer With 2,5-Furandione And Oxybis[Propanol] adheres to stringent quality management protocols. Each batch undergoes rigorous testing to ensure consistency in key parameters such as acid value, viscosity, and non-volatile content. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Viscous liquid to solid mass
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	30 - 60
Viscosity (at 25°C, cP)	Contact for details
Non-Volatile Content (%)	≥ 98.0
Identification (IR)	Conforms

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