In the vast world of silicone chemistry, Hydroxyl Terminated Silicone Oil, also known as OH Polymer or Silanol Terminated Polydimethylsiloxane, stands out as a highly versatile and functional material. For procurement managers and R&D scientists in various industries, understanding its properties and applications is crucial for making informed purchasing decisions. As a leading manufacturer and supplier of this essential chemical intermediate, we aim to provide clarity on how to select the right grade of hydroxyl terminated silicone oil for your unique requirements.

Understanding the Core Properties

Hydroxyl Terminated Polydimethylsiloxane (CAS No. 70131-67-8) is characterized by the presence of hydroxyl (-OH) functional groups at both ends of its polydimethylsiloxane chain. This specific molecular structure imparts several key advantages:

  • Reactivity: The terminal hydroxyl groups allow for further chemical reactions, making it an excellent base for RTV (Room Temperature Vulcanizing) silicone rubbers, sealants, and coatings.
  • Flexibility and Durability: It contributes to excellent flexibility, heat resistance, weather resistance, and electrical insulation properties in finished products.
  • Low Viscosity-Temperature Coefficient: This means the viscosity changes minimally with temperature fluctuations, ensuring consistent performance across a wider operating range.
  • Chemical Inertness: Like other silicones, it exhibits good chemical stability and resistance to oxidation, UV radiation, and moisture.

Key Applications Across Industries

The versatility of Hydroxyl Terminated Silicone Oil makes it indispensable in numerous sectors. As a reliable supplier, we see demand from:

  • Silicone Rubber Manufacturing: It serves as a critical structural control agent and base polymer for producing high-performance silicone rubbers, sealants, and adhesives. Procurement specialists often inquire about bulk purchases of OH Polymer for consistent RTV silicone production.
  • Electronics and Electricals: Its excellent dielectric properties and thermal stability make it ideal for encapsulating electronic components, insulating materials, and protective coatings. Companies seeking electronic-grade silicone fluids will find our product specifications highly suitable.
  • Textile and Leather Industry: Used as a finishing agent to improve softness, lubricity, and sewability of fabrics and leather. Manufacturers looking to buy textile auxiliaries with enhanced performance frequently contact us.
  • Construction: It plays a role in sealants, waterproofing agents, and coatings, providing durability and protection against environmental factors.
  • Personal Care and Cosmetics: While not the primary focus, certain grades can be found in cosmetic formulations for their emollient and conditioning properties.

Navigating Your Purchase: What to Look For

When looking to buy Hydroxyl Terminated Silicone Oil, consider the following factors, and feel free to request a quote from your trusted manufacturer:

  • Viscosity: Available in a wide range from low (e.g., 40-100 cSt) to very high (e.g., 80,000+ cSt), depending on the molecular weight. Low viscosity grades are often used for surface treatments and as reactive diluents, while higher viscosity grades are primary base polymers.
  • Hydroxyl Content: This directly impacts reactivity. Higher hydroxyl content generally means faster curing and crosslinking. Discuss your formulation needs with our technical sales team.
  • Purity: Ensure the product meets your application’s purity requirements, especially for sensitive applications like electronics or certain cosmetic uses. We pride ourselves on supplying hydroxyl silicone oil with purity levels of 99.9%.
  • Supplier Reliability: Partnering with an established manufacturer and supplier in China ensures consistent quality, competitive pricing, and timely delivery.

Why Choose Us for Your OH Polymer Needs?

As a dedicated manufacturer and supplier of silicone materials, we offer not just products, but solutions. Our commitment to research and development ensures that we stay at the forefront of silicone technology. We understand the critical role that OH Polymer plays in your manufacturing processes. Therefore, we strive to provide the best possible quality, competitive pricing, and reliable support. Whether you are in the silicone rubber industry, electronics, or textiles, we are your go-to source for premium hydroxyl terminated silicone oil. Contact us today to discuss your requirements and get a comprehensive quote for your next purchase.