Explain the types of silicones.

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Answer

1. Linear silicones - They are obtained by the hydrolysis and subsequent condensation of dialkyl or diaryl silicon chlorides.
- Silicone rubbers - These silicones are bridged together by methylene or similar groups.
- Silicone resins - They are obtained by blending silicones with organic resins such as acrylic esters.
2. Cyclic silicones - These are obtained by the hydrolysis of $R _2 SiCl _2$.
3. Cross linked silicones - They are obtained by hydrolysis of RSiClr

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