Polyolefin Resin Pricing Mechanisms Driven by Naphtha Feedstock Movements
Polyolefin pricing follows naphtha via yield multipliers and co-product credits, requiring lagged pass-through contract terms and strict incoming melt index audits.
Co-Product Credits
Meaning
Accounting adjustments represent the value of secondary materials generated during the primary manufacturing of a chemical. The application of co-product credits reduces the net production cost of the main polymer by subtracting the revenue or energy value of these side streams. This practice is common in the steam cracking of naphtha where multiple hydrocarbons are produced simultaneously.
Feedstock Economics
Steam crackers produce a variety of substances alongside ethylene, such as propylene and butadiene. When calculating the cash cost of ethylene, co-product credits are subtracted from the gross cost of the naphtha feedstock. This calculation helps determine the global competitiveness of different cracking regions.
Higher prices for secondary chemicals lead to lower net costs for the primary olefin.
Calculation Method
Financial analysts use several approaches to assign value to these secondary outputs. The choice of method for co-product credits affects the reported profitability of a resin plant. Market based valuation is the most common approach for high value olefins.
Valuation Impact
Fluctuations in the price of secondary chemicals can cause the cost of the primary resin to change even if the raw feedstock price is stable. If the market for butadiene collapses, the lack of co-product credits increases the effective cost of producing polyethylene. Moulders track these credits to anticipate price shifts in the virgin resin market.
Effective cost management depends on these secondary market dynamics.