Description

Linseed/Rosin/Butylphenol/Formaldehyde/Glycerol/Phthalic CAS NO 68333-31-3 is a specialized synthetic resin, representing a complex co-esterification product of modified rosin, phthalic anhydride, and glycerol, further reacted with butylphenol and formaldehyde. This engineered polymer is valued for its excellent film-forming properties, adhesion, and chemical resistance, making it a critical performance additive. It is primarily needed by manufacturers in the coatings, adhesives, and ink industries seeking to enhance product durability and functionality.

Application

• Industrial Coatings: As a key resin binder in high-performance protective coatings, including marine, automotive, and industrial maintenance paints, providing corrosion resistance and durability.
• Printing Inks: Used in the formulation of lithographic, gravure, and flexographic inks to improve gloss, rub resistance, and drying characteristics.
• Adhesives & Sealants: Serves as a tackifying and reinforcing resin in pressure-sensitive adhesives, hot-melt adhesives, and construction sealants.
• Polymer Modification: Acts as a plasticizer and compatibilizer in various polymer systems to modify flexibility, processability, and adhesion properties.
• Wood Finishes: A component in varnishes and lacquers for furniture and flooring, contributing to hardness, water resistance, and a clear finish.
• Metal Primers: Enhances the adhesion and anti-corrosive properties of primers used on metal substrates.

Basic Information

Product Name	Linseed/Rosin/Butylphenol/Formaldehyde/Glycerol/Phthalic
CAS No.	68333-31-3
Molecular Formula	Complex Mixture / Polymer
Molecular Weight	Contact for details
Synonyms	Rosin-modified phenolic resin; Ester gum modified with butylphenol formaldehyde; Alkyd resin based on rosin and phthalic anhydride; Butylphenol formaldehyde modified rosin ester; Glycerol phthalate resin, rosin-modified; Phenolic modified rosin ester; Printing ink resin 68333-31-3; Tackifying resin 68333-31-3
EINECS	Contact for details

Quality Control

Our production of this synthetic resin adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, softening point, viscosity, and color are rigorously tested. 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, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and open flame. Due to its nature, the product should be stored under conditions that minimize oxidation.

Specification

Item	Specification
Appearance	Yellowish to amber solid or viscous liquid
Softening Point (Ring & Ball)	80 - 120 °C
Acid Value	< 30 mg KOH/g
Color (Gardner)	< 12
Viscosity (at 25°C, 60% in solvent)	Contact for details
Solubility	Soluble in common organic solvents (esters, ketones, aromatic hydrocarbons)

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