Description

Polyamide Resin-651 (Low Molecular Liquid 651) is a versatile, low molecular weight polyamide resin supplied as a liquid. This product is valued for its excellent adhesion, flexibility, and compatibility with a wide range of substrates and resins. It is primarily used in the formulation of high-performance coatings, adhesives, and inks across several industrial sectors. The CAS number for this compound is 68071-74-9.

Application

• Industrial Coatings: Used as a flexibilizing and adhesion-promoting agent in epoxy and other thermoset coating systems for metal, concrete, and plastic.
• Adhesives & Sealants: Acts as a key component in formulating high-strength, durable structural and assembly adhesives.
• Printing Inks: Employed as a binder and tackifier in solvent-based and overprint varnishes to enhance gloss and substrate adhesion.
• Composite Materials: Functions as a toughening agent and impact modifier in fiber-reinforced polymer composites.
• Construction Chemicals: Incorporated into flooring compounds, grouts, and waterproofing membranes to improve mechanical properties and chemical resistance.
• Electrical Encapsulation: Used in potting and encapsulation compounds for electronic components due to its good electrical insulation properties.

Basic Information

Product Name	Polyamide Resin-651 (Low Molecular Liquid 651)
CAS No.	68071-74-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyamide 651; Liquid Polyamide Resin; Versamid 651 (trade name); Low Molecular Weight Polyamide; Polyaminoamide; Epoxy Curing Agent 651; Reactive Polyamide; Amine-terminated Polyamide
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Key parameters such as amine value, viscosity, and color are strictly monitored. Certificates of Analysis (COA) 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, and well-ventilated area at temperatures between 15-25°C (59-77°F). This product is hygroscopic (moisture-sensitive) and easily oxidized; it is recommended to store under an inert atmosphere (e.g., nitrogen blanket) after opening to maintain optimal quality and shelf life. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 12
Viscosity (at 25°C)	Contact for details
Amine Value (mg KOH/g)	Contact for details
Non-Volatile Matter	≥ 99%
Identification (IR)	Conforms

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