Silicones

DMS-S42: Silanol Terminated PDMS, 18,000 cSt (Telechelic Functional Fluid)
Terminal silanol groups render polydimethylsiloxanes susceptible to condensation under both mild acid and base conditions. They are intermediates for most room temperature vulcanizeable (RTV) condensation cure silicones. The reactivity of silanol fluids is utilized in applications other than RTVs. Low viscosity silanol fluids are employed as filler treatments and structure control additives in silicone rubber compounding. Intermediate viscosity (1,000-10,000 cSt) fluids can be applied to textiles as durable fabric softeners. High viscosity silanol terminated fluids form the matrix component in tackifiers and pressure sensitive adhesives.
DMS-S42 Properties
Viscosity: 18,000 cStMolecular Weight: 77,000 g/molWt.% OH: 0.4OH (eq/kg): 0.023-0.025

PDV-0525: Vinyl Terminated Diphenylsiloxane-Dimethylsiloxane Copolymer (Telechelic Functional Fluid)
These fluids are most often employed in 2-part addition cure silicone elastomers where special thermal or optical properties are required.
PDV-0525 Properties
Viscosity: 500 cStMolecular Weight: 14,000 g/molVinyl (eq/kg): 0.12-0.16Refractive Index: 1.430

FMV-4042: Vinyl Terminated TrifluoropropylMethylsiloxane-Dimethylsiloxane Copolymer (Telechelic Functional Fluid)
Vinyl functional fluorosilicones offer greater solvent resistance (lower hydrocarbon solubility) and lower refractive index than analogous dimethylsiloxane homopolymers.
FMV-4042 Properties
Viscosity: 14,000-18,000 cStMolecular Weight: 25,000-25,000 g/molRefractive Index: 1.388