The two companies are partnering to develop polypropylene using carbon transformation, an approach that takes into account the global health crisis and climate change — BERKELEY, Calif.— Carbon transformation company Twelve and biotechnology company LanzaTech have partnered to transform CO 2 emissions into polypropylene, a key polymer used for medical devices including syringes and IV bags, as well as for large-scale applications in automotive, furniture, textiles and other everyday products.