⛽️🔗=🔗

#alkene #olefin #hydrocarbon chain #fuel component #unsaturated #polymer precursor #double bond

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#monomer #building block #linkable unit #polymer precursor #structural unit #repeat unit base

🧪➡️🧱☎️

#bakelite #polymer precursor #resin production #chemical synthesis #industrial chemistry #phenol-formaldehyde