Divinyltetramethyldisiloxane (DVTMS)
Divinyltetramethyldisiloxane properties
CAS Number:
2627-95-4
Other Chemical Name:
Formula:
C8H18OSI2
Boiling point:
139 °C (282.2 °F)
Flash Point
24 °C (75.2 °F)
Density:
Refractive Index
Physical State:
Divinyltetramethyldisiloxane description
Divinyltetramethyldisiloxane refers to a chemical structure with -Si-O- as the repeating unit and terminated with vinyl active groups. Divinyltetramethyldisiloxane is primarily used as an end-capping agent in the production of vinyl silicone fluid, vinyl silicone rubber, and other products. By varying the amount and method of addition, vinyl double-end capped siloxane can effectively control the degree of polymerization and improve product performance. It is an important raw material for the deep processing of vinyl-silicone products such as vinyl silicone fluid and vinyl silicone rubber.
Sodium condensation method is used for producing Divinyltetramethyldisiloxane. Dimethyldiethoxysilane, chloroethene, and sodium are subjected to a polycondensation reaction, followed by solid-liquid separation using a separation unit to obtain single vinyl end-capped intermediate product. Subsequently, the single vinyl end-capped intermediate product undergoes hydrolysis in the reaction unit to produce divinyl end-capped intermediate product. Finally, the divinyl end-capped intermediate product is distilled through the distillation unit to obtain the final divinyl end-capped product. The solvent-free process makes the product suitable for high-standard fields such as pharmaceuticals and semiconductors.
Process flow for DVTMS
Divinyltetramethyldisiloxane application
Divinyltetramethyldisiloxane (DVTMS) finds various applications across different industries due to its unique properties:
Silicone intermediates:
– Silicone elastomers: DVTMS is a crucial building block for producing silicone elastomers, which are used in adhesives, sealants, gaskets, and medical devices due to their flexibility, heat resistance, and biocompatibility.
– Silicone resins: DVTMS is used in the synthesis of silicone resins for coatings and paints, providing excellent weather resistance, electrical insulation, and non-stick properties.
Electronics industry:
– Encapsulation: DVTMS-based materials are used for encapsulating electronic components, protecting them from moisture, dust, and other environmental factors.
– Dielectric materials: Silicone resins derived from DVTMS serve as dielectric materials in capacitors and other electronic devices due to their high dielectric strength and stability.
Healthcare industry:
– Medical devices: DVTMS is used to produce biocompatible silicone elastomers for medical devices such as catheters, implants, and tubing.
– Drug delivery systems: Silicone-based drug delivery systems utilize DVTMS derivatives for their controlled release properties and biocompatibility.
Other applications:
– Mold release agents: DVTMS-based materials are used as mold release agents in various manufacturing processes due to their non-stick and heat-resistant properties.
– Textile finishing: Silicone finishes containing DVTMS provide water repellency and stain resistance to fabrics.
Synonyms:
1,1,3,3-Tetramethyl-1,3-divinyldisiloxane, 1,3-Divinyl-1,1,3,3-tetramethyldisiloxane, Tetramethyldivinyldisiloxane, 1,3-Divinyltetramethyldisiloxane, Tetramethyl-1,3-divinyldisiloxane, Tetramethyl-divinyldisiloxane, 1,3-Bis(vinyldimethylsilyl)oxane, 1 3 divinyltetramethyldisiloxane, 1 3-divinyltetramethyldisiloxane, platinum divinyltetramethyldisiloxane, platinum divinyltetramethyldisiloxane complex, divinyltetramethyldisiloxane bis benzocyclobutene
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