Silicones

DMS-S21: Silanol Terminated PDMS, 90-120 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-S21 Properties
Viscosity: 90-120 cStMolecular Weight: 4,200 g/molWt.% OH: 0.8-0.9OH (eq/kg): 0.47-0.53

DMS-V51: Vinyl Terminated PDMS, 100,000 cSt (Telechelic Functional Fluid)
Vinyl terminated polymers are most often employed in 2-part addition cure silicone elastomers.
DMS-V51 Properties
Viscosity: 100,000 cStMolecular Weight: 140,000 g/molWt.% Vinyl: 0.03-0.05Vinyl (eq/kg): 0.016-0.018

PDV-0331: 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-0331 Properties
Viscosity: 1,000 cStMolecular Weight: 27,000 g/molVinyl (eq/kg): 0.065-0.011Refractive Index: 1.420

DMS-S33: Silanol Terminated PDMS, 3,500 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-S33 Properties
Viscosity: 3,500 cStMolecular Weight: 43,500 g/molWt.% OH: 0.8OH (eq/kg): 0.045-0.050

FMV-4035: 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-4035 Properties
Viscosity: 4,000-6,000 cStMolecular Weight: 6,000-9,000 g/molRefractive Index: 1.388