Description

2-Butenedioic Acid (E)-, Polymer With 1,2-Propanediol is a polymeric ester derived from fumaric acid and propylene glycol, representing a versatile class of materials known as unsaturated polyester resins or their precursors. This compound is valued for its role as a key intermediate in the synthesis of high-performance, cross-linkable polymers with excellent mechanical and chemical resistance properties. It is essential for manufacturers in the coatings, adhesives, composites, and specialty plastics industries seeking to develop durable and customizable polymeric materials. The product, identified by CAS No. 27083-66-5, meets the stringent requirements for industrial polymer production.

Application

• Unsaturated Polyester Resins (UPR): Primary raw material for the production of thermosetting resins used in fiberglass-reinforced plastics (FRP).
• Industrial Coatings & Gel Coats: Used in formulating durable, chemical-resistant surface coatings for marine, automotive, and construction applications.
• Adhesives & Sealants: Serves as a reactive oligomer in the synthesis of high-strength structural and specialty adhesives.
• Composite Materials: Key component in the manufacture of lightweight, high-strength composites for the aerospace and transportation sectors.
• Molding Compounds: Used in Sheet Molding Compound (SMC) and Bulk Molding Compound (BMC) for electrical components and automotive parts.
• Polymer Modification: Acts as a cross-linking agent or co-monomer to enhance the properties of other polymer systems.

Basic Information

Product Name	2-Butenedioic Acid (E)-, Polymer With 1,2-Propanediol
CAS No.	27083-66-5
Molecular Formula	(C4H4O4·C3H8O2)x
Molecular Weight	Polymeric substance (variable)
Synonyms	Fumaric Acid-Propylene Glycol Polymer; Poly(propylene glycol maleate); Poly(propylene glycol fumarate); Propylene Glycol-Fumaric Acid Copolymer; Unsaturated Polyester Prepolymer; UPR Oligomer; Fumaric Acid/Propylene Glycol Condensate; 1,2-Propanediol polymer with (E)-2-butenedioic acid
EINECS	Contact for details

Quality Control

Our production of 2-Butenedioic Acid (E)-, Polymer With 1,2-Propanediol adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability for downstream polymerization. Each lot is characterized for critical parameters including acid value, viscosity, and degree of polymerization. Certificates of Analysis (COA) detailing these specifications are provided and can be tailored to meet specific customer or regulatory requirements.

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, open flames, and incompatible materials such as strong oxidizing agents. Under recommended conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Viscous liquid to solid mass
Color	Pale yellow to amber
Acid Value	20 - 50 mg KOH/g
Viscosity (at 25°C)	500 - 5000 mPa·s (solution dependent)
Identification (IR)	Conforms to structure
Solid Content	60 - 100%
Volatile Matter	< 2.0%

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