...December 20, 2023 - Envalior's earnings were sharply depressed in 2023 by low demand, destocking, and high energy prices, combined with temporary arbitrage imports from Asia. We now estimate S&P Global Ratings-adjusted EBITDA (excluding management adjustments to reported EBITDA) will decline to an exceptional 145 million-155 million in 2023, from 510 million in 2022; this implies a temporary peak in leverage of over 20x adjusted gross debt to EBITDA. - 2024 is expected to bring more normalized energy prices and market conditions. We anticipate that adjusted EBITDA will recover to 350 million-400 million in 2024, supported by a gradual improvement in market demand and the realization of higher-than-initially-anticipated synergies at Envalior, which was created through a merger. However, leverage is likely to remain elevated, with adjusted gross debt to EBITDA of 10.5x-11.5x--this exceeds the 8x we view as the maximum commensurate with a 'B' rating. - We therefore lowered to 'B-' from 'B'...