▁ ▁Chem ical ▁rec y cling ▁▁ ▁For ▁some ▁polym ers , ▁it ▁is ▁possible ▁to ▁convert ▁them ▁back ▁into ▁mon om ers , ▁for ▁example , ▁P ET ▁can ▁be ▁treated ▁with ▁an ▁alco hol ▁and ▁a ▁catal yst ▁to ▁form ▁a ▁d ial k yl ▁t ere ph th al ate . ▁The ▁t ere ph th al ate ▁di ester ▁can ▁be ▁used ▁with ▁eth yl ene ▁g ly col ▁to ▁form ▁a ▁new ▁poly ester ▁polym er , ▁thus ▁making ▁it ▁possible ▁to ▁use ▁the ▁pure ▁polym er ▁again . ▁In ▁ 2 0 1 9 , ▁East man ▁Chem ical ▁Company ▁announced ▁initi atives ▁of ▁m eth an ol ysis ▁and ▁sy ng as ▁designed ▁to ▁handle ▁a ▁greater ▁variety ▁of ▁used ▁material . ▁ ▁W aste ▁pl astic ▁py ro ly s is ▁to ▁fuel ▁oil ▁▁ ▁Another ▁process ▁involves ▁the ▁conversion ▁of ▁ass orted ▁polym ers ▁into ▁pet role um ▁by ▁a ▁much ▁less ▁precise ▁thermal ▁dep ol ym er ization ▁process . ▁Such ▁a ▁process ▁would ▁be ▁able ▁to ▁accept ▁almost ▁any ▁polym er ▁or ▁mix ▁of ▁polym ers , ▁including ▁therm os et ▁materials ▁such ▁as ▁vul can ized ▁rub ber ▁t ires ▁and ▁the ▁bi opol ym ers ▁in ▁fe athers ▁and ▁other ▁agricult ural ▁waste . ▁Like ▁natural ▁pet role um , ▁the ▁chemical s ▁produced ▁can ▁be ▁used ▁as ▁fu els ▁or ▁as ▁feed stock . ▁A ▁RE SE M ▁Technology ▁plant ▁of ▁this ▁type ▁in ▁Car th age , ▁Missouri