Description

Rosin-Maleic Anhydride Reaction Product, Pentaerythritol Ester is a high-performance, modified rosin ester derived from the reaction of rosin, maleic anhydride, and pentaerythritol. This chemical modification significantly enhances its thermal stability, oxidative resistance, and compatibility with a wide range of polymers, making it a superior tackifier and modifier. It is a critical raw material for formulators in the adhesives, coatings, and ink industries seeking to improve product performance and durability.

Application

• Hot-Melt Adhesives (HMAs): Primary tackifier providing excellent adhesion, cohesion, and thermal stability for packaging, woodworking, and non-woven applications.
• Pressure-Sensitive Adhesives (PSAs): Key component in tapes and labels to enhance tack, peel strength, and aging resistance.
• Industrial and Protective Coatings: Used as a resin modifier to improve gloss, hardness, and water resistance in solvent-based and powder coatings.
• Printing Inks: Acts as a resinous binder and tackifier, particularly in gravure and flexographic inks, to enhance pigment wetting and print quality.
• Rubber Compounding: Functions as a processing aid and tackifier in rubber products to improve compound viscosity and green strength.
• Sealants and Caulks: Imparts flexibility, adhesion, and durability to various sealant formulations.

Basic Information

Item	Details
Product Name	Rosin-Maleic Anhydride Reaction Product, Pentaerythritol Ester
CAS No.	82228-97-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Pentaerythritol Rosin Maleate; Maleated Rosin Pentaerythritol Ester; Rosin-Maleic Anhydride Adduct Pentaerythritol Ester; Tackifier R-105; Ester Gum 8D; Modified Rosin Ester; Pentaerythritol Ester of Rosin-Maleic Anhydride Adduct
EINECS	Contact for details

Quality Control

Our Rosin-Maleic Anhydride Reaction Product, Pentaerythritol Ester is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assessments of acid value, softening point, color, and viscosity. Certificates of Analysis (COA) documenting full specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). This product is easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen blanket). Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Pale yellow to amber solid
Softening Point (Ring & Ball)	100 - 130 °C
Acid Value	< 20 mg KOH/g
Color (Gardner)	< 8
Viscosity (25°C, 70% in Toluene)	Contact for details

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