Description

Rosin, Pentaerythritol, Maleic Anhydride Polymer is a synthetic resin derived from the esterification and polymerization of rosin, pentaerythritol, and maleic anhydride. This modified rosin ester offers enhanced thermal stability, improved adhesion, and excellent compatibility with a wide range of polymers and solvents, making it a critical performance additive. It is primarily sought by manufacturers in the adhesives, coatings, printing inks, and rubber industries for its ability to act as a tackifier, modifier, and film-forming agent.

Application

• Hot-Melt Adhesives (HMA): A key tackifying resin providing excellent adhesion, cohesion, and thermal stability for packaging, woodworking, and non-woven applications.
• Pressure-Sensitive Adhesives (PSA): Used in tapes and labels to enhance tack, peel strength, and shear resistance.
• Industrial & Protective Coatings: Functions as a resin modifier to improve gloss, hardness, drying time, and chemical resistance in solvent-based and alkyd coatings.
• Printing Inks: Imparts gloss, rub resistance, and pigment wetting properties, particularly in gravure and flexographic inks.
• Rubber Compounding: Acts as a processing aid and tackifier in rubber products, improving compound viscosity and green strength.
• Sealants and Caulks: Enhances adhesion, flexibility, and durability in construction and automotive sealant formulations.

Basic Information

Product Name	Rosin, Pentaerythritol, Maleic Anhydride Polymer
CAS No.	68152-64-7
Molecular Formula	Complex Polymer (Contact for details)
Molecular Weight	Variable (Contact for details)
Synonyms	Maleated Rosin Pentaerythritol Ester; Maleic Anhydride-Modified Rosin Pentaerythritol Ester; Pentaerythritol Rosin Maleate; Rosin Ester Tackifier; Polymerized Rosin Ester; Tackifying Resin; Pentalyn®-type Resin (Trade Name Analog); Modified Wood Rosin Ester
EINECS	Contact for details

Quality Control

Our production of Rosin, Pentaerythritol, Maleic Anhydride Polymer adheres to stringent quality management protocols. Each batch undergoes rigorous testing for key parameters including acid value, softening point, color, and viscosity to ensure consistent performance and batch-to-batch uniformity. 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, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; prolonged storage under an inert atmosphere (e.g., nitrogen) is recommended for optimal long-term stability. Keep away from heat sources and open flame.

Specification

Item	Specification
Appearance	Pale yellow to amber solid
Softening Point (Ring & Ball)	90 - 120 °C
Acid Value	10 - 30 mg KOH/g
Color (Gardner)	≤ 8
Viscosity (at 25°C, 70% in Toluene)	Contact for details
Identification (IR)	Conforms

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