TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: At least a portion of the reactor is at 570-680 degrees C. The feedstock and catalyst composition are introduced into reactor at catalyst-to-feed ratio of greater than or equal to 6. In the method, preferably producing olefins and aromatic compounds from plastic feedstock, the introducing step involves introducing plastic feedstock and catalyst composition within reactor which has at least one of i) time-interval average catalyst bed temperature of 420-730 degrees C, where the time interval is less than or equal to 3 minutes from the start of reaction; ii) temperature in the reactor of 420-730 degrees C at location that is less than or equal to 0.3 L (i.e. length of reactor flow path) from the inlet where the plastic feedstock and catalyst composition are introduced; and iii) weight-averaged catalyst bed temperature in reactor of 420-730 degrees C weight-averaged at least two locations that is less than or equal to 0.3 L and/or to greater than or equal to 0.3 L from the inlet where the plastic feedstock and catalyst composition are introduced, where length L can result increased yields of light gas olefins and aromatics for continuous flow reactor. The reactor is fluidized bed reactor, bubbling bed reactor, slurry reactor, rotating kiln reactor, and packed bed reactor. The at least a portion of liquid product stream is directed to reactor (A)-(E). Preferred Components: The FCC catalyst is comprised of X-type zeolite, Y-type zeolite, mordenite, faujasite, nano-crystalline zeolites, MCM mesoporous materials, SBA-15, silico-alumino phosphate, gallophosphate, and titanophosphate. The ZSM-5 zeolite catalyst is present in an amount of 10-50 wt.%, preferably 30-45 wt.%.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The feedstock comprises polyolefins, polyethylene, polypropylene, polystyrene, polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyamide, polycarbonate, polyurethane, polyester, natural and synthetic rubber, tires, filled polymers, composites, plastic alloys, plastics dissolved in solvent, biomass, bio oils, or petroleum oils. EXAMPLE - A plastic feed comprised of 19 wt.% high-density polyethylene (HDPE), 21 wt.% low-density polyethylene (LDPE), 24 wt.% polypropylene (PP), 12 wt.% 4C-linear low density polyethylene (LLDPE), 6 wt.% 6C-LLDPE, 11 wt.% polystyrene (PS), and 7 wt.% polyethylene terephthalate (PET); and a catalyst composition comprised of 37.5 wt.% ZSM-5 catalyst, and 62.5 wt.% fluidized catalytic cracking (FCC) catalyst were used in pyrolysis conversions with different 1 minute average reactor bed temperatures. The reaction temperature at start of reaction was varied from 600-700 degrees C to give 75.37 wt.% of aromatics concentration (conc.) in liquid products boiling below 240 degrees C, and 13.88 wt.% of iso paraffin conc. in liquid products boiling below 240 degrees C.