Description

Poly(Dimer Acid-Co-Alkyl Polyamine) is a synthetic polyamide resin derived from the condensation reaction of dimerized fatty acids and alkyl polyamines. This versatile polymer is valued for its excellent film-forming properties, adhesion, and chemical resistance, making it a crucial component in high-performance industrial formulations. It is primarily sought by manufacturers in the coatings, adhesives, and ink industries seeking to enhance product durability and performance.

Application

• Industrial Coatings: Used as a flexibilizing and adhesion-promoting agent in epoxy and polyamide-based protective coatings for metal, concrete, and marine applications.
• Adhesives & Sealants: Acts as a key resin in hot-melt and reactive polyamide adhesives, providing strong bonding, thermal stability, and moisture resistance.
• Printing Inks: Serves as a binder and grinding vehicle in solvent-based and overprint varnishes, improving gloss, rub resistance, and substrate adhesion.
• Composite Materials: Functions as a toughening agent and compatibilizer in fiber-reinforced polymer composites.
• Corrosion Inhibitors: Formulated into coatings and primers as a barrier-forming resin that protects substrates from environmental degradation.
• Personal Care: Utilized in hair styling and cosmetic products as a film-forming polymer to provide hold and water resistance.

Basic Information

Product Name	Poly(Dimer Acid-Co-Alkyl Polyamine)
CAS No.	68139-70-8
Molecular Formula	(C36H68O4 · C6H18N4)n
Molecular Weight	Varies (Polymer)
Synonyms	Polyamide resin from dimer acid and polyamine; Dimer acid-polyamine polyamide; Polyamide resin, dimer acid-alkylpolyamine; Versamid® (trade name series); Macromelt® (trade name series); Unirez® (trade name series); Thermoplastic polyamide; Reactive polyamide
EINECS	Contact for details

Quality Control

Our Poly(Dimer Acid-Co-Alkyl Polyamine) is manufactured under a strict quality management system. Each batch is tested for critical parameters including amine value, acid value, viscosity, and softening point to ensure consistent performance. 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). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed when not in use to prevent absorption of atmospheric moisture which may affect product properties.

Specification

Item	Specification
Appearance	Yellow to amber pellets or solid
Softening Point (Ring & Ball)	105 - 125 °C
Amine Value	Contact for details
Acid Value	< 5.0 mg KOH/g
Viscosity (at 160°C)	Contact for details
Color (Gardner)	< 12

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