The crack in US polypropylene prices is probably worth some comments as the polymer has shown extraordinary strength since the middle of last year, in the face of new capacity that was expected to push the US market into surplus. In the chart below we show that the spread over propylene has not fallen, but this is because propylene is falling lock-step with polypropylene for the most part. Those companies integrated back to PDH economics will see a significant margins squeeze as polymer prices fall while propane prices increase. We have written recently about a concern that lower auto production rates in the US will back up into parts and that this will impact materials. In the early days of the auto cutbacks, we assumed that the automakers and their suppliers would simply build inventory, with the expectation of a bounce-back in demand once the chip shortage was over. As the chip shortage has dragged on and become more significant, we have likely hit any limit of inventory build, and we are concerned that polypropylene pricing could collapse if auto-related demand does not recover quickly. While autos are not a dominant demand category for polypropylene the sector is certainly large enough to swing the polymer market from shortage to surplus. With the rise in propane prices and other ethylene feedstocks, polypropylene profits could fall meaningfully. See today's daily for more comments on the propane markets.
Source: Bloomberg, C-MACC Analysis, September 2021