Aminopropyl Dimethicone

Aminopropyl Dimethicone (CAS 99363-37-8) is an amine-functional silicone polymer used across personal care, textile, and industrial coating applications. The amine groups along the silicone backbone allow it to bond to surfaces and substrates that standard silicones cannot.

This unique structure enables durable conditioning, adhesion promotion, and crosslinking functionality. In hair care formulations, it deposits onto damaged or chemically treated fiber, delivering lasting smoothness and reducing combing force without heavy buildup.

Textile finishers apply it as a softening and surface-modification agent on synthetic and natural fabrics. This process improves hand feel and imparts durable water repellency to the treated materials during the manufacturing process.

In coatings and adhesive systems, the reactive amine groups serve as crosslinking sites. This functionality improves adhesion to difficult substrates including glass, metal, and plastics, ensuring a more robust and long-lasting bond.

Leather treatment formulations use it to condition and protect finished surfaces while maintaining flexibility and surface uniformity. It is supplied as a clear to pale yellow viscous liquid with varying viscosity grades to suit requirements.

Cosmetic-grade material is the most commercially prevalent, with suppliers offering specifications aligned to personal care industry standards. Technical-grade variants are available for textile and industrial coating applications.

These technical grades are ideal for environments where cosmetic purity thresholds are not required. The versatility of this silicone polymer makes it a staple for manufacturers seeking high-performance surface modification and conditioning.