Jan 12, 2018 - WICHITA, Kan. – Koch-Glitsch and INVISTA Performance Technology (IPT), affiliates of Koch Industries, announced today a new partnership to offer innovative DTL™ process technology, allowing refineries to capture the value spread between replacement fuel costs and high-octane gasoline blend stock. DTL process technology converts light olefins, present in fluidized-bed catalytic cracking (FCC) off-gas, coker off-gas and other refinery streams, into high-octane gasoline blend stock, significantly increasing their value.