The Global Blocked HDI Market was valued at USD 273.1 Million in 2022 and is projected to reach USD 478 Million by 2029, growing at a Compound Annual Growth Rate (CAGR) of 8.3% during the forecast period. This robust growth is fueled by rising demand for high-performance, durable coatings across automotive, industrial, and construction sectors, coupled with increasing environmental regulations favoring low-VOC and user-friendly polyurethane systems.

As industries shift toward more sustainable and efficient coating technologies, Blocked HDI (Hexamethylene Diisocyanate) has emerged as a critical component for creating advanced polyurethane systems. In this blog, we profile the Top 10 Companies in the Blocked HDI Industry—a mix of global chemical giants and specialized producers driving innovation and supply chain stability.

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🔟 1. Covestro AG

Headquarters: Leverkusen, Germany
Key Offering: Desmodur BL series (e.g., Desmodur BL 3175 SN, Desmodur BL 4265 SN)

Covestro is a global leader in high-tech polymer materials and a dominant force in the Blocked HDI market. Their Desmodur product line offers a range of blocked HDI-based crosslinkers renowned for excellent light stability, chemical resistance, and mechanical properties, primarily used in high-performance coatings for automotive, industrial, and plastic substrates.

Innovation and Sustainability Initiatives:

• Development of low-temperature deblocking and fast-cure blocked HDI systems

• Focus on bio-based and recycled content for more sustainable polyurethane raw materials

• Commitment to achieving operational climate neutrality by 2035

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9️⃣ 2. Asahi Kasei Corporation

Headquarters: Tokyo, Japan
Key Offering: Duranate MF-K60X, Duranate TPA-B80X

Asahi Kasei is a major Japanese chemical company with a strong portfolio of polyurethane materials. Their Duranate series includes advanced blocked HDI products designed for superior weatherability and flexibility in coatings for automotive, electronics, and construction applications.

Innovation and Sustainability Initiatives:

• Investment in R&D for next-generation blocked isocyanates with improved performance profiles

• Development of products compliant with stringent environmental and safety regulations in Asia and globally

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8️⃣ 3. Tosoh Corporation

Headquarters: Tokyo, Japan
Key Offering: Coronate series blocked HDI crosslinkers

Tosoh Corporation is a leading chemical and specialty materials company with significant expertise in isocyanate chemistry. Their Coronate product line includes various blocked HDI derivatives that provide excellent durability and are widely used in powder coatings, coil coatings, and can coatings.

Innovation and Sustainability Initiatives:

• Expansion of production capacity for specialty isocyanates to meet growing global demand

• Development of eco-friendly coating solutions with lower curing temperatures to reduce energy consumption

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7️⃣ 4. Vencorex Chemicals

Headquarters: Colombes, France
Key Offering: Tolonate blocked HDI crosslinkers

Vencorex, a joint venture between PTTGC and Perstorp, is a global specialist in aliphatic isocyanates. The company’s Tolonate product range includes high-performance blocked HDI crosslinkers known for their excellent yellowing resistance and mechanical properties, serving the coatings, adhesives, and elastomers markets.

Innovation and Sustainability Initiatives:

• Strategic focus on developing sustainable isocyanate solutions with reduced environmental impact

• Investment in production technology to enhance product quality and supply reliability

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6️⃣ 5. Leeson Polyurethanes

Headquarters: Louisville, Kentucky, USA
Key Offering: Custom formulated blocked HDI prepolymers and crosslinkers

Leeson Polyurethanes is a specialized manufacturer of polyurethane raw materials, including a range of blocked HDI products. The company serves various industries with custom-formulated solutions tailored for specific application requirements, particularly in industrial coatings and adhesives.

Innovation and Sustainability Initiatives:

• Expertise in developing application-specific blocked HDI formulations

• Focus on customer-centric innovation and technical support services

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5️⃣ 6. Meisei Chemical Works, Ltd.

Headquarters: Tokyo, Japan
Key Offering: Takenate series blocked HDI products

Meisei Chemical is a Japanese chemical manufacturer with a strong presence in the isocyanates market. Their Takenate product line includes blocked HDI crosslinkers used in high-performance coatings that require excellent weather resistance and durability.

Innovation and Sustainability Initiatives:

• Continuous improvement of product performance characteristics for demanding applications

• Commitment to quality control and consistency in manufacturing processes

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4️⃣ 7. Jiang Xing Industry

Headquarters: Zibo, Shandong, China
Key Offering: JX-BHDI series blocked HDI crosslinkers

Jiang Xing Industry is a significant Chinese producer of polyurethane raw materials, including blocked HDI products. The company has been expanding its production capacity and technological capabilities to serve both domestic and international markets with cost-effective solutions.

Innovation and Sustainability Initiatives:

• Expansion of production facilities to meet growing domestic and export demand

• Investment in R&D to enhance product quality and develop new applications

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3️⃣ 8. Shiquanxing

Headquarters: Jiangsu, China
Key Offering: SQX-BHDI series blocked HDI products

Shiquanxing is another prominent Chinese manufacturer in the polyurethane industry, producing a range of blocked HDI crosslinkers. The company focuses on serving the rapidly growing Asian coatings market with competitive products for various industrial applications.

Innovation and Sustainability Initiatives:

• Development of products tailored for specific regional market requirements

• Focus on improving manufacturing efficiency and cost competitiveness

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2️⃣ 9. Wanhua Chemical Group

Headquarters: Yantai, Shandong, China
Key Offering: Wannate HB series blocked HDI crosslinkers

Wanhua Chemical is one of the world’s largest MDI producers and has been expanding its portfolio to include aliphatic isocyanates like HDI and their derivatives. The company’s scale and vertical integration provide significant advantages in supply chain stability and cost efficiency.

Innovation and Sustainability Initiatives:

• Massive investment in R&D and production capacity expansion for aliphatic isocyanates

• Commitment to sustainable development and green manufacturing practices

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1️⃣ 10. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Basonat HW and other specialty blocked polyisocyanates

BASF, as one of the world’s largest chemical companies, offers a comprehensive portfolio of polyurethane raw materials, including blocked HDI-based crosslinkers. Their products are used in high-performance coatings that require excellent durability, chemical resistance, and weatherability.

Innovation and Sustainability Initiatives:

• Development of innovative blocked HDI systems with improved sustainability profiles

• Strong focus on digitalization and circular economy principles in product development

Get Full Report Here: Blocked HDI Market – View in Detailed Research Report

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🌍 Outlook: The Future of Blocked HDI Is Smart and Sustainable

The Blocked HDI market is undergoing significant transformation as environmental regulations tighten and performance requirements increase across end-use industries. While traditional applications continue to drive volume, the industry is investing heavily in next-generation formulations that offer lower curing temperatures, faster cure rates, and improved sustainability profiles.

📈 Key Trends Shaping the Market:

• Development of low-temperature cure blocked HDI systems to reduce energy consumption

• Increasing demand for waterborne and high-solids coating systems incorporating blocked HDI

• Growing adoption in electric vehicle batteries and electronic components for enhanced protection

• Expansion of production capacities in Asia to meet regional demand growth

Get Full Report Here: Blocked HDI Market – View in Detailed Research Report

The companies listed above are not only supplying essential raw materials for high-performance coatings—they’re driving the technological advancement of polyurethane chemistry for a more sustainable industrial future.

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