High molecular mass silicone polymers are formed through the hydrolysis of organochlorosilanes followed by condensation polymerization.

1. Me$_2$SiCl$_2$: Hydrolysis yields Me$_2$Si(OH)$_2$ (two active sites), which polymerises to form linear long-chain silicones.
2. MeSiCl$_3$ and PhSiCl$_3$: Hydrolysis yields silanols with three active -OH groups, leading to cross-linked, 3D network polymers.
3. Me$_3$SiCl: Hydrolysis yields trimethylsilanol, Me$_3$SiOH, which has only one active -OH group. It can condense with another silanol group to form a dimer (Me$_3$Si-O-SiMe$_3$), but it cannot propagate a chain. Therefore, it acts as a chain terminator rather than a monomer for high molecular mass polymers.