Monodisperse Reactive Silicones via Anionic Living Polymerization

Monodisperse silicones offer certain advantages over standard telechelic silicones. They have a discrete molecular weight and no low molecular weight non-functional cyclic siloxanes that can migrate out of the fluid or materials produced with them. Higher molecular weight vinyl-functional materials can be used as base silicones for 2-part RTVs.

Monodisperse Products

Vinyl-Terminated

Vinyl-Terminated Polydimethylsiloxanes, monodisperse

Product Code	Viscosity (cSt)	Molecular Weight	Wt % Vinyl	Vinyl (eq/kg)	Density
DMS-Vm31	1,000	28,000	0.18-0.26	0.07-0.10	0.97
DMS-Vm35	5,000	49,500	0.10-0.13	0.04-0.05	0.97
DMS-Vm41	10,000	62,700	0.08-0.12	0.03-0.04	0.97

Hydride-Terminated

Hydride-Terminated Polydimethylsiloxanes, monodisperse

Product Code	Viscosity (cSt)	Molecular Weight	Wt % Hydride	Equivalent Weight	Refractive Index	Density
DMS-Hm15	50	3,000-3,500	0.07	1,625	1.403	0.96
DMS-Hm21	100	5,500	0.04	2,750	1.403	0.96
DMS-Hm25	500	17,200	0.01	8,600	1.403	0.97

α-Monovinyl-Ω-Monohydride-Terminated

α-Monovinyl-Ω-Monohydride-Terminated Polydimethylsiloxane, CAS: [104780-63-4], TSCA

Product Code	Viscosity (cSt)	Molecular Weight	Refractive Index	Density
DMS-HV15	40-60	2,000-3,000	1.404	0.96
DMS-HV22	150-250	10,000	1.403	0.97
DMS-HV31	600-1,000	25,000	1.403	0.97

α-Monovinyl-Monophenyl-Ω-Monohydride-Terminated

α-Monovinyl-Monophenyl-Ω-Monohydride-Terminated Polydimethylsiloxane, CAS: [1422279-25-1]

Product Code	Viscosity (cSt)	Molecular Weight	Refractive Index	Density
PMM-HV12	20	2,000	1.4135	0.97