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Write the structures of the monomers used for getting the following polymers:
(a) Nylong 6,6
(b) melamine-formaldehyde polymer
(c) Buna-2

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(a) Nylon 6,6
Monomers: (a) Hexamethylenediamine: `H_(2)N(CH_(2))_(6)NH_(2)`
(b) Melamine-formaldehyde polymer
Monomers: (i) formaldehyde: `HCHO`
(ii) image
(c) Buta-S
Monomes: (1) Butadiene `H_(2)C=HC-CH=CH_(2)`
(ii) image

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