Description

Rosin, Maleated is a chemically modified rosin derivative produced by the reaction of rosin with maleic anhydride, resulting in a product with enhanced properties such as higher acid value and improved thermal stability. This modification is critical for creating high-performance resins and polymers that offer superior adhesion, hardness, and water resistance. It is an essential raw material for manufacturers in the coatings, adhesives, printing inks, and rubber industries seeking to improve product durability and performance.

Application

• Coatings & Paints: Used as a key component in alkyd resins for industrial and protective coatings, providing excellent gloss, hardness, and drying properties.
• Adhesives & Sealants: Serves as a tackifier and modifier in hot-melt and pressure-sensitive adhesives, enhancing bond strength and thermal stability.
• Printing Inks: Incorporated into resin formulations for lithographic and gravure inks to improve pigment wetting, gloss, and print quality.
• Rubber Compounding: Acts as a processing aid and reinforcing agent in rubber products, improving tack and dispersion of fillers.
• Paper Sizing: Utilized in the production of paper sizing agents to improve water resistance and printability.
• Polymer Modification: Functions as a reactive intermediate for the synthesis of specialty polyesters and other polymers.

Basic Information

Product Name	Rosin, Maleated
CAS No.	8050-28-0
Molecular Formula	Complex Mixture
Molecular Weight	N/A (Polymeric Mixture)
Synonyms	Maleated Rosin; Maleic Anhydride-Modified Rosin; Maleic Rosin Adduct; Rosin-Maleic Anhydride Adduct; MALEIC ROSIN; Rosin, maleic anhydride adduct; LEWISOL 28; UNII-9H89I0F7JZ
EINECS	232-476-2

Quality Control

Our Maleated Rosin is produced under strict quality management protocols to ensure batch-to-batch consistency and performance. Key parameters such as acid value, softening point, and color are rigorously tested against established internal specifications. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical 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). This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve quality. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Yellowish to amber solid lumps or flakes
Acid Value (mg KOH/g)	≥ 200
Softening Point (Ring & Ball, °C)	100 - 130
Color (Gardner)	≤ 12
Saponification Value (mg KOH/g)	Contact for details
Identification (IR)	Conforms

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