Description

Tall Oil Rosin Esters CAS NO 308074-98-8 are a versatile class of chemical derivatives produced by esterifying tall oil rosin with polyols, resulting in a tackifier with excellent thermal stability and compatibility. This modification enhances the rosin's performance, making it a crucial component for formulating high-quality, durable adhesives and coatings. It is primarily needed by manufacturers in the pressure-sensitive adhesive, hot-melt adhesive, ink, and polymer modification industries seeking to improve tack, adhesion, and flexibility.

Application

• Pressure-Sensitive Adhesives (PSAs): A key tackifier for tapes, labels, and graphic films, providing immediate grab and long-term holding power.
• Hot-Melt Adhesives (HMAs): Enhances tack, open time, and adhesion to various substrates like paper, wood, and plastics.
• Inks and Coatings: Used as a resin modifier to improve gloss, hardness, and drying properties in printing inks and protective coatings.
• Rubber Compounding: Acts as a processing aid and tackifier in rubber products, improving compound viscosity and green strength.
• Polymer Modification: Serves as a compatibilizer and plasticizer in various polymer blends to enhance specific physical properties.
• Sealants and Caulks: Imparts adhesive strength and flexibility, contributing to the durability of construction and automotive sealants.

Basic Information

Product Name	Tall Oil Rosin Esters
CAS No.	308074-98-8
Molecular Formula	Complex mixture; primarily esters of rosin acids (e.g., abietic acid) with polyols.
Molecular Weight	Varies by grade and esterification degree.
Synonyms	Tall Oil Rosin Ester; Rosin Ester, Tall Oil; Ester Gum (from tall oil rosin); TOR Ester; Tallate Ester; Polyol Ester of Tall Oil Rosin; Modified Rosin Ester; Tackifying Resin Ester
EINECS	Contact for details

Quality Control

Our Tall Oil Rosin Esters are manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including acid value, softening point, color, and viscosity. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your specifications and industry standards.

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 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 open flame.

Specification

Item	Specification
Appearance	Pale yellow to amber solid/paste
Softening Point (Ring & Ball)	80 - 120 °C (Grade dependent)
Acid Value	≤ 20 mg KOH/g
Color (Gardner)	≤ 8
Viscosity (at 160°C)	500 - 5000 mPa·s
Identification (IR)	Conforms to structure

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