Wanhua Chemical Expands IPDA Capacity to 100000 Tons Sets Sights on Global Leadership

On June 23, Wanhua Chemical released the environmental impact report draft for its IPDA expansion project, which aims to increase the capacity of its IPN and IPDA units. The IPN unit will expand from 55,000 tons/year to 100,000 tons/year, while the IPDA unit will grow from 50,000 tons/year to 100,000 tons/year. Construction is scheduled from 2025 to 2026.

This expansion is part of Wanhua’s strategic push to strengthen its IPDI industrial chain, which includes the production of IP, IPN, IPDA, and IPDI. As a leader in polyurethane raw materials, Wanhua has consistently invested to maintain its market dominance, with planned investments for 2025 reaching ¥6.5 billion.

Significant Capacity Gains in Special Isocyanates
Earlier this year, Wanhua announced multiple capacity expansions. In April, it revealed plans to double the capacity of its HMDI unit from 20,000 to 40,000 tons/year at its Yantai base, while adding 30,000 tons/year of HDI capacity. The company also completed the acquisition of French specialty isocyanate producer Vencorex, gaining access to 70,000 tons/year of HDI and 20,000 tons/year of IPDI production.

Challenging Global Leaders in IPDI Production
Wanhua’s latest push targets isophorone diisocyanate (IPDI), a low-activity cycloaliphatic diisocyanate widely used in coatings, adhesives, and sealants. In 2024, Wanhua began expanding IPDI capacity at its Yantai site from 30,000 to 50,000 tons/year, alongside IP capacity growth from 50,000 to 80,000 tons/year. With the acquisition of Vencorex, Wanhua’s IPDI capacity now matches global leader Evonik at 50,000 tons/year.

IPDI’s unique low viscosity and high selectivity make it ideal for applications requiring low residual monomer content and superior performance, such as weather-resistant polyurethane coatings and adhesives. Wanhua noted that the expansion will support the development of China’s high-end, eco-friendly coatings industry.

Market Opportunities Amid Supply Disruptions
In March, Evonik declared force majeure on its VESTANAT® IPDI products, halting supply indefinitely due to unforeseen issues. The disruption has created opportunities for competitors like Wanhua to capture market share. Other players in the global IPDI market include Covestro (35,000 tons/year), BASF (5,000 tons/year), and Chinese producer NHU, which recently commissioned its 21,000-ton IPDI project.

Wanhua’s rapid expansion highlights its ambition to redefine the global IPDI market, leveraging innovation and capacity growth to cement its leadership position.