For B2B procurement managers, R&D scientists, and formulators in the chemical and materials industry, selecting the right specialty chemical can be the difference between a product breakthrough and a production bottleneck. Aminopropyl terminated polydimethylsiloxanes (APDTMS), identified by CAS No. 106214-84-0, are a critical class of materials offering unique properties due to their siloxane backbone and terminal amino groups. Understanding these variations is key to making an informed purchase.

Understanding the Key Specifications: Viscosity and Molecular Weight

One of the most significant parameters when evaluating APDTMS is its viscosity, often expressed in centistokes (cSt). Common ranges include low viscosity variants (e.g., 10-15 cSt, 20-30 cSt, 50-60 cSt), medium viscosity (e.g., 100-120 cSt), and higher viscosity types (e.g., 900-1100 cSt, 1800-2200 cSt, up to 10000 cSt or more). These viscosity differences directly correlate with the molecular weight of the polymer chains. Higher viscosity fluids generally possess higher molecular weights, leading to distinct rheological properties and application suitability.

Applications Driven by Amino Functionality

The terminal amino groups on APDTMS are what make these silicone fluids so versatile. They provide reactive sites that can readily participate in various chemical reactions. This reactivity is exploited in several key industrial applications:

  • Polymer Synthesis: APDTMS serves as a crucial building block for synthesizing advanced copolymers. For example, its ability to react with isocyanates or epoxides makes it ideal for creating polysiloxane-polyimide, polyurethane, or epoxy-modified silicone polymers. When searching to buy these complex polymers, understanding the intermediate's functionality is paramount.
  • Textile and Fiber Treatment: In the textile industry, APDTMS is used as a finishing agent. It imparts a soft handle, improved drape, and enhanced durability to fabrics. It can also provide anti-static properties and improve the washability of textiles. Manufacturers looking for reliable textile auxiliaries will find significant value here.
  • Personal Care and Cosmetics: The excellent conditioning and smoothing properties of silicones are well-known in the personal care sector. APDTMS, in particular, contributes to improved wet and dry combability, shine, and a smooth feel in hair care products like conditioners and treatments. Its biocompatibility and low irritation potential make it a preferred ingredient for many formulators.
  • Coatings and Adhesives: The amino groups can promote adhesion to various substrates, making APDTMS a valuable additive in specialized coatings and adhesive formulations. It can also enhance the flexibility and weatherability of these materials.

Why Partner with a Reputable Manufacturer and Supplier?

When sourcing chemicals like APDTMS (CAS 106214-84-0), the choice of supplier is critical. A reputable manufacturer, particularly one based in China with strong R&D capabilities and stringent quality control, ensures consistent product purity, reliable batch-to-batch consistency, and competitive pricing. NINGBO INNO PHARMCHEM CO.,LTD. prides itself on being such a partner. We understand the critical needs of our B2B clients and are committed to providing not just a product, but a solution that supports innovation and efficient production. Whether you need a specific viscosity for a niche application or a bulk quantity for large-scale manufacturing, we are equipped to meet your demands. We encourage potential clients to reach out for a quote and explore how our high-quality aminopropyl terminated polydimethylsiloxane can benefit your next project.