Dacron : dacron is prepared by a condensation reaction between dimethylterephthalate and ethylene glycol in presence of a catalyst consisting of mixture of zinc acetate and antimony trioxide at temperature 425-475K. methanol is eliminated during condensation.
terylene (dacron )
Dimethylterephthalate ethylene glycol
Melamine- formaldehyde polymer
Melamine formaldehyde polymer is manufactured by the condensation polymerisation of melamine and formaldehyde.
Buna – N
Buna –N is obtained by the copolymerisation of 1, 3 – butadiene and acrylonitrile in the presence of a peroxide catalyst.
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