How is bakelite prepared?
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Posted by Himanshi Ranjan 6 years ago
- 3 answers
Nitya Saini 6 years ago
Yogita Ingle 6 years ago
When the phenol is taken in excess and the reaction medium is made acidic, the product of the condensation reaction obtained is acidic. Whereas, when the quantity of formaldehyde taken is more than that of phenol in the reacting mixture, and the reaction occurs in a basic medium, the condensation product is known as Resol.
These intermediate condensation products are used as resins in different industries. Bakelite is obtained when Novolac is allowed to undergo cross-linking in the presence of a cross-linking agent. In general, phenol taken in excess acts as the cross-linking agent.
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Vidhu Choudhary 6 years ago
0Thank You