CBSE Class 11-science Answered
What are silicones?
Asked by Topperlearning User | 14 Aug, 2014, 07:23: AM
Expert Answer
- These are organosilicon polymers containing Si-O-Si linkages.
- They are formed by the hydrolysis of alkyl or aryl substituted chlorosilanes and their subsequent polymerisation.
- The alkyl or aryl substituted chlorosilanes are prepared by the reaction of Grignard reagent and silicon tetrachloride.
RMgCl + SiCl4 → RSiCl3 + MgCl2
Grignard reagent
R stands for -CH3 , -C2H5 or -C6H5 groups
Answered by | 14 Aug, 2014, 09:23: AM
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