I. Key Industry Event: Collapse of European Integrated Caprolactam Operations Highlights Raw Material Cost Risks
In mid-June, the polyamide production entity at the Leuna chemical park in Europe filed for bankruptcy; the plant had plunged into a liquidity crisis just three months after a change in ownership. Looking at the supply chain background, multiple chemical sites under the original parent company had already initiated bankruptcy proceedings by late 2025. The park’s integrated facilities cover the entire chain of intermediates and polymer materials, including cumene, phenol, acetone, cyclohexanone, caprolactam, Nylon 6, and ammonium sulfate. Although the park operator completed an asset acquisition and restructured the production entity in April of this year, operations became unsustainable after only two or three months.
The company disclosed the core operational challenges: Geopolitical tensions between the US and Iran drove a 60%–100% surge in the prices of key raw materials such as sulfur, benzene, and propylene. Persistent constraints on overseas sulfur supplies directly forced a reduction in plant operating rates. Production costs skyrocketed while prices for finished products failed to rise in tandem, placing continuous pressure on cash flow. Despite achieving brief book profitability in April and May, the company lacked sufficient capital buffers to handle volatile costs, as significant funds were tied up in earlier high-priced raw material purchases. Currently, existing long-term orders are being fulfilled, but new orders will be re-evaluated during the bankruptcy proceedings; consequently, the short-term supply of locally produced caprolactam and related intermediates in Europe is tightening.
This bankruptcy is not an isolated incident. In recent years, persistently high energy and raw material costs in Europe have led to an outflow of demand from downstream sectors—such as textiles and engineering plastics—and a continuous contraction of regional chemical production capacity, marking a structural shift in the global supply-demand landscape of the nylon industry chain.
II. SunSirs Benchmark Prices Across the Industry Chain (as of June 25; Comparison with June 1)
Upstream Basic Raw Materials (Core Cost Drivers)
Sulfur
Composite benchmark price on June 25: 8,960 RMB/ton; benchmark price on June 1: 10,114 RMB/ton; a decline of 11.41% during the month. The geopolitical risk premium from earlier periods has gradually dissipated; however, the volume of overseas arrivals remains low, port inventories are at historical lows, and cost-side support persists.
Benzene
Benchmark price on June 25: 7,080 RMB/ton; June 1: 7,400 RMB/ton (down 4.32% for the month). Easing US-Iran tensions drove crude oil prices down; domestic refinery maintenance concluded, increasing supply, while the overall cost basis for aromatics shifted lower.
Propylene
Mainstream transaction price on June 25: 6,700 RMB/ton; June 1: 6,520 RMB/ton (up 2.76% for the month). Periodic maintenance of steam cracking units caused a slight tightening of supply.
Phenol-Acetone Chain (Cumene Chain)
Phenol
Benchmark price on June 25: 7,730 RMB/ton; June 1: 7,400 RMB/ton (up 4.46% for the month). Although benzene prices retreated slightly, high-cost inventory from earlier periods continues to support production costs.
Acetone
Average price on June 25: 5,240 RMB/ton; June 1: 5,450 RMB/ton (down 3.85% for the month). Weak demand for solvents and plastics during the off-season weighed on the price of this co-product.
Cyclohexanone
Benchmark price on June 25: 10,260 RMB/ton; June 1: 10,890 RMB/ton (down 5.79% for the month). Operating rates for caprolactam remain low, leading to a continued contraction in raw material procurement.
Core Intermediates & By-products
Caprolactam (CPL)
Mainstream market price on June 25: 11,080 RMB/ton; June 1: 11,750 RMB/ton (down 5.70% for the month). Downstream Nylon 6 producers continue to face losses, leading to a "wait-and-see" approach regarding raw material procurement. Ammonium Sulfate
The average ex-factory price was 1,360 RMB/ton on June 25, down from 1,425 RMB/ton on June 1 (a monthly decline of 4.56%). Demand weakened due to the fertilizer off-season, placing pressure on the export sales of this by-product.
Downstream Polymer Product: Nylon 6 (PA6 Chips)
The price for textile-grade chips was 10,950 RMB/ton on June 25, down from 11,620 RMB/ton on June 1 (a monthly decline of 5.77%). Both the textile and modified plastics sectors were in their off-season, leading to a continued accumulation of finished product inventories.
III. Overall Domestic Spot Market Trends and Price Transmission Logic (as of June 25)
1. Upstream Costs: Initial sharp surges followed by slight pullbacks; industry chain margins remain squeezed.
Earlier in the year, the US-Iran conflict caused the prices of sulfur, pure benzene, and propylene to double in the short term, directly driving up the comprehensive production costs for cyclohexanone and caprolactam. By late June, the geopolitical risk premium had gradually dissipated, and raw material prices saw slight month-on-month declines; however, monthly average prices remained significantly higher than those seen earlier in the second quarter.
Transmission Characteristics: Sulfur is a key raw material for wet-process sulfuric acid, which supports cyclohexanone and phenol production facilities, creating a complete cost chain: Sulfur → Sulfuric Acid → Cyclohexanone/Phenol → Caprolactam → Nylon 6. Upward pressure from raw material costs was transmitted down the chain, yet downstream end-markets lacked the pricing power to pass on these costs. This resulted in a paradoxical situation across the chain—rising costs coupled with falling prices for finished products. This dynamic was a primary cause of bankruptcies among European plants; while domestic integrated enterprises enjoyed some buffer, small and medium-sized independent plants continued to incur losses. 2. Divergent supply and demand for midstream intermediates
Cyclohexanone: Caprolactam production rates remain generally low, resulting in insufficient demand for raw materials. Domestic plants operate at moderate loads; however, spot supplies of cyclohexanone are ample, causing prices to weaken continuously.
Phenol/Acetone: A slight pullback in pure benzene prices offers limited support. Acetone prices have fallen more sharply due to the off-season for downstream coatings and electronic solvents, squeezing the integrated processing margins of phenol-acetone plants.
Caprolactam: Domestic production capacity is massive, with new integrated capacity continuing to come online. Although reduced imports—stemming from short-term supply tightness in Europe—might have offered relief, weak domestic demand has failed to absorb the increased supply. Consequently, spot prices have declined in tandem with raw material costs, and plants are proactively cutting operating rates to alleviate inventory accumulation pressure.
3. Downstream Nylon 6 demand enters the off-season; cost pass-through is completely blocked
Demand in both major Nylon 6 consumption sectors has weakened simultaneously:
Nylon 6 textile filament/staple fiber: Summer is the traditional off-season for textiles; orders for finished garments and home textiles have shrunk. Spinning mills continue to lower operating rates and purchase chips only in small quantities based on immediate needs, with no significant restocking.
Modified engineering plastics: Demand for automotive and electronic components is lackluster, and vehicle shipments for both domestic and export markets have slowed; modified plastic manufacturers are maintaining low raw material inventory levels.
A negative feedback loop has formed within the industry chain: slight reductions in raw material prices have failed to stimulate downstream stockpiling. Prices for finished goods remain under pressure, and processing margins continue to shrink, further suppressing procurement demand for caprolactam and cyclohexanone and causing market conditions to deteriorate.
4. Trading sentiment on June 25
Market inquiries were limited throughout the day, with traders and producers showing a strong willingness to lower prices to move stock. Downstream textile and plastics enterprises honored only fixed monthly long-term contracts; spot transactions were sporadic, and speculative stockpiling was non-existent. Regionally, inventory pressure was highest in the major production hubs of East China, resulting in lower price quotes; procurement in North and South China was based on immediate needs, with regional price differentials fluctuating only slightly. IV. Overall Global and Domestic Market Situation
Overseas Markets (Europe as the Key Variable)
Europe: Caprolactam-related facilities at the Leuna complex have entered bankruptcy proceedings, leading to a short-term contraction in local supplies of intermediates and Nylon 6, and a temporary rise in local spot prices. However, Europe's long-term structural challenges remain unresolved: high import costs for energy and sulfur, the continued relocation of downstream manufacturing, and expected future shutdowns of aging facilities. Regional self-sufficiency continues to decline, necessitating increased reliance on Asian imports.
Southeast Asia and North America: Southeast Asia is seeing steady capacity expansion in textiles and modified plastics, driving moderate growth in import demand for caprolactam and Nylon 6. North American downstream demand remains stable; local integrated facilities enjoy a cost advantage over their European counterparts, limiting the need for increased external procurement.
Global Raw Material Constraints: Although sulfur shipping from the Middle East is gradually recovering, the restoration of overseas mines and refineries is a lengthy process. The global tight-balance situation for sulfur is unlikely to reverse completely in the short term, continuing to constrain production costs across the entire caprolactam value chain in the long run.
Domestic Market Status
Supply Side: Domestic integrated capacity for caprolactam and cyclohexanone is ample. Leading integrated projects benefit from raw material self-sufficiency, offering far greater cost resilience than standalone European plants. The industry manages output through periodic maintenance to alleviate inventory accumulation pressure.
Imports and Exports: With the contraction of European supply, caprolactam imports from Europe have decreased in the short term. While domestic exports of Nylon 6 chips and spinning products to Southeast Asia have seen a slight uptick, this growth is insufficient to offset the decline in domestic demand during the off-season.
Policy and Industry Comparison: Europe is heavily dependent on imported sulfur and natural gas, whereas China possesses a more robust system linking sulfur to the phosphate chemical and refining sectors, providing greater flexibility regarding raw material autonomy. Consequently, China has avoided widespread corporate bankruptcies, although small and medium-sized non-integrated processing plants are still facing losses and production cuts. V. Analysis of Price Transmission Logic Across the Entire Value Chain
Upstream (Crude Oil, Middle Eastern Sulfur)
Geopolitical conflicts in the first half of the year caused a surge in sulfur and naphtha prices, driving up costs for pure benzene and propylene. Following the US-Iran rapprochement in June, expectations for restored shipping lanes rose and the geopolitical premium faded; while sulfur and aromatics prices saw a monthly pullback, their annual average prices remained significantly elevated.
Intermediate Auxiliaries (Sulfur → Sulfuric Acid → Cyclohexanone / Phenol)
Sulfuric acid is an essential auxiliary for cyclohexanone and cumene production processes; the sharp rise in sulfur prices directly increased production costs for both routes. Concurrent price hikes for phenol and cyclohexanone squeezed caprolactam production margins, becoming a critical factor in the liquidity crunch faced by European plants.
Core Intermediates (Cyclohexanone → Caprolactam)
Caprolactam production relies entirely on cyclohexanone feedstock; a weakening in cyclohexanone prices drove a corresponding decline in caprolactam prices. However, weak downstream demand for Nylon 6 meant that lower caprolactam prices failed to stimulate purchasing, while a loose supply-demand balance suppressed any potential for a rebound.
Terminal Polymerization (Caprolactam → Nylon 6 → Textiles / Modified Plastics)
Nylon 6 is currently in its traditional off-season, and end-products lack pricing power. Value chain profits continue to shift toward upstream raw materials, leaving mid- and downstream processing sectors generally loss-making—a pattern mirroring the bankruptcies seen among European firms; only domestic integrated production capacities possess a cost buffer.
VI. Market Outlook
A slight pullback in sulfur and benzene prices has provided a cost buffer; however, with the off-season persisting for downstream Nylon 6 textiles and modified plastics, prices for caprolactam, cyclohexanone, and phenol are expected to fluctuate within a weak range.
As shipping through the Strait of Hormuz gradually normalizes and sulfur arrival volumes increase, raw material costs are trending downward, easing cost pressures across the entire chain. Meanwhile, high-cost chemical capacity in Europe continues to be phased out, positioning Asia as the core supply base for the Nylon value chain and sustaining long-term growth in domestic exports.
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