Description

2,5-Furandione, Polymer With Ethenylbenzene, 2-Butoxyethyl Ester CAS NO 68890-84-6 is a specialized copolymer derived from maleic anhydride and styrene, subsequently esterified with 2-butoxyethanol. This engineered polymer is valued for its unique combination of film-forming properties, adhesion promotion, and compatibility with a wide range of resins and solvents. It serves as a critical performance additive in industrial coatings, adhesives, and sealants, where it enhances flexibility, gloss, and substrate wetting. Manufacturers seeking to improve the durability and application characteristics of their formulations will find this polymer an essential component.

Application

• Industrial Coatings: Acts as a reactive modifier and adhesion promoter in alkyd, epoxy, and acrylic-based protective coatings for metal, wood, and plastic substrates.
• Adhesives & Sealants: Imparts flexibility and improves bond strength in pressure-sensitive adhesives (PSAs), construction sealants, and assembly adhesives.
• Printing Inks: Used as a grinding resin and wetting agent to enhance pigment dispersion, gloss, and rub resistance in solvent-based and overprint varnishes.
• Textile & Leather Auxiliaries: Functions as a finishing agent to improve softness, water repellency, and dye fixation.
• Plastic Additives: Serves as an internal lubricant and processing aid to improve the flow and surface finish of PVC and other polymer compounds.
• Oilfield Chemicals: Utilized as a component in drilling fluid additives and scale inhibitors.

Basic Information

Product Name	2,5-Furandione, Polymer With Ethenylbenzene, 2-Butoxyethyl Ester
CAS No.	68890-84-6
Molecular Formula	(C4H2O3·C8H8·C6H12O2)x
Molecular Weight	Varies (Polymer)
Synonyms	Styrene Maleic Anhydride Copolymer, 2-Butoxyethyl Ester; SMA® Copolymer Ester; Butoxyethyl Ester of Styrene-Maleic Anhydride Copolymer; Poly(styrene-alt-maleic anhydride), butoxyethyl ester; SMA 2625; SMA EF-40; SMA Resin Ester; Maleic Anhydride-Styrene Copolymer Butoxyethyl Ester
EINECS	Contact for details

Quality Control

Our production of 2,5-Furandione, Polymer With Ethenylbenzene, 2-Butoxyethyl Ester adheres to a strict quality management system. Each batch undergoes rigorous testing for key parameters including acid value, viscosity, solid content, and color to ensure consistency and performance. Certificates of Analysis (COA) are provided with every shipment, detailing the specific results against our internal specifications. We are committed to supplying material that meets the high standards required for industrial and specialty chemical applications.

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 flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture. For long-term storage, an inert atmosphere (nitrogen) is recommended to prevent oxidation.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Solid Content	48 - 52 %
Acid Value	65 - 85 mg KOH/g
Viscosity (25°C)	800 - 2500 mPa·s
Color (Gardner)	≤ 4
Solvent	2-Butoxyethanol / Xylene blend

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