Polysiloxanes di-Me, di-Ph hydroxy-terminated
[CAS# 68951-93-9]

Identification

• Classification: Chemical reagent >> Organic reagent >> Siloxane
• Name: Polysiloxanes di-Me, di-Ph hydroxy-terminated
• CAS Registry Number: 68951-93-9
• EC Number: 805-013-2
• SMILES: C[Si](C)(O)O[Si](C)(C)O[Si](c1ccccc1)(c2ccccc2)O[Si](C)(C)O

Properties

• Density: 1.05 g/mL (25 ºC)
• Boiling point: >300 ºC
• Flash point: >113 ºC (closed cup)

Discovory and Applicatios

Polysiloxanes di-Me, di-Ph hydroxy-terminated are a class of silicone-based compounds that exhibit versatile properties and are extensively used in a variety of industrial and commercial applications. These compounds are characterized by their unique chemical structure, which consists of a siloxane backbone (Si-O-Si) with methyl (Me) and phenyl (Ph) groups attached to the silicon atoms, and hydroxyl groups at the termini of the polymer chain.

The discovery of these compounds arose from the need to improve the properties of traditional polysiloxanes by incorporating different organic groups, which would enhance their stability, reactivity, and compatibility with other materials. The incorporation of methyl and phenyl groups provides the polymer with distinct properties. Methyl groups contribute to the polymer's flexibility and hydrophobicity, while phenyl groups impart additional rigidity, thermal stability, and improved optical properties. The hydroxyl-terminated nature of these polysiloxanes makes them reactive, allowing them to be further modified or crosslinked in the presence of appropriate curing agents.

One of the primary applications of polysiloxanes di-Me, di-Ph hydroxy-terminated is in the formulation of coatings and adhesives. These compounds are used to create highly durable, heat-resistant, and chemically stable coatings, which are crucial in industries such as automotive, electronics, and construction. The hydroxyl groups at the terminal ends of the polymer chains facilitate the formation of crosslinks, which significantly enhance the mechanical properties of the coatings, including their adhesion strength, flexibility, and wear resistance.

In addition to coatings, polysiloxanes di-Me, di-Ph hydroxy-terminated are widely used in the production of sealants, elastomers, and silicone rubber. These materials benefit from the combination of flexibility and thermal stability, making them ideal for high-performance applications where both properties are required. For example, in the automotive industry, these materials are employed in the manufacturing of gaskets, seals, and weatherproofing components, where the ability to withstand extreme temperatures and harsh environments is essential.

Furthermore, these polysiloxanes are used in the synthesis of specialty lubricants and release agents. Their unique molecular structure allows for the formulation of lubricants that can operate under high temperatures and reduce friction in mechanical systems. This application is particularly important in industries such as manufacturing, aerospace, and automotive, where machinery and equipment are subjected to demanding operating conditions.

The use of polysiloxanes di-Me, di-Ph hydroxy-terminated is also prominent in the development of hybrid materials. These materials combine the benefits of organic polymers and inorganic silicates, achieving properties that neither component could offer alone. The hydroxyl groups facilitate the bonding of the siloxane with inorganic materials, resulting in hybrid systems that are used in advanced coatings, composites, and electronic components.

The versatility of these compounds is further demonstrated in their application in the production of cosmetic and personal care products. Polysiloxanes di-Me, di-Ph hydroxy-terminated are used in formulations for hair care, skin care, and makeup products. Their ability to provide smooth textures, improve spreadability, and impart a silky feel has made them key ingredients in various cosmetic products.

In conclusion, polysiloxanes di-Me, di-Ph hydroxy-terminated are important materials with a wide range of applications in industries such as coatings, adhesives, automotive, aerospace, and personal care. Their unique combination of flexibility, thermal stability, and reactivity makes them indispensable in the development of high-performance materials that meet the demands of modern technology and consumer products.