Description

Partially Hydrogenated Rosin is a chemically modified derivative of natural rosin, where a portion of its unsaturated bonds have been selectively hydrogenated. This process significantly improves the product's thermal and oxidative stability, making it a superior and more reliable raw material for demanding industrial applications. It is a critical component in the formulation of high-performance adhesives, tackifiers, and polymer modifiers. Key industries that rely on this specialty chemical include pressure-sensitive adhesives, hot-melt adhesives, coatings, and rubber compounding.

Application

• Pressure-Sensitive Adhesives (PSAs): Serves as a primary tackifier for labels, tapes, and graphic films, offering excellent peel strength and aging resistance.
• Hot-Melt Adhesives: Enhances tack, adhesion, and flexibility in packaging, bookbinding, and woodworking adhesives.
• Rubber Compounding: Acts as a processing aid and reinforcing agent, improving the tack and mechanical properties of rubber products.
• Coatings and Inks: Used as a resin modifier to improve gloss, hardness, and drying characteristics.
• Polymer Modification: Imparts improved compatibility and performance in EVA (ethylene-vinyl acetate) and other polymer systems.
• Sealants and Caulks: Provides enhanced adhesion and durability in construction and automotive sealant formulations.
• Chewing Gum Base: Used in food-grade formulations as an elastomer to provide the desired chew texture.
• Solder Flux: Acts as a rosin-based activator in electronics manufacturing to facilitate clean soldering.

Basic Information

Product Name	Partially Hydrogenated Rosin
CAS No.	65997-06-0
Molecular Formula	~C20H30O2 (Representative)
Molecular Weight	~302.45 g/mol (Average)
Synonyms	Hydrogenated Rosin (Partial); Rosin, hydrogenated; Dymerex (Trade Name); Staybelite (Trade Name); Stabilized Rosin; Dihydroabietic Acid Resin; Modified Wood Rosin; Glycerol Ester of Partially Hydrogenated Rosin (when esterified)
EINECS	266-042-9

Quality Control

Our Partially Hydrogenated Rosin is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. We provide comprehensive quality documentation, including Certificates of Analysis (COA) for each shipment, detailing key parameters such as acid value, softening point, color, and degree of hydrogenation. Our production adheres to relevant industrial standards, and we can support compliance requirements for specific applications, including those for food-contact materials where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperatures (15-25°C). Keep away from strong oxidizing agents and heat sources to maintain product integrity and prevent discoloration.

Specification

Item	Specification
Appearance	Pale Yellow to Amber Solid
Acid Value (mg KOH/g)	150 - 170
Softening Point (Ring & Ball, °C)	70 - 85
Color (Gardner)	≤ 6
Saponification Value	Contact for details
Iodine Value	Contact for details
Ash Content	≤ 0.1%

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