Polyurethane raw materials are the starting point for a family of elastomers that combine wear resistance, elasticity, and design flexibility. In 2024, the global polyurethane market was estimated at USD 85.2 billion, while the casting polyurethane segment was valued at roughly USD 2.76 billion. For an industrial buyer in the early research phase, the challenge is not a lack of options, but knowing how the product types differ and which materials fit the intended application.

The Problem / Opportunity

Industrial buyers evaluating polyurethane raw materials frequently encounter overlapping terminology: casting polyurethane raw materials, polyurethane quasi materials, prepolymers, liquid polyurethane, and CPU casting polyurethane. Some of these terms describe input materials, while others describe finished elastomers. Without a clear framework, procurement teams cannot easily compare formulations, processing behaviour, or supplier capabilities.

The opportunity is that the polyurethane market remains large and growing. According to Roots Analysis, the global market is projected to expand from USD 85.2 billion in 2024 to USD 136.2 billion by 2035. Astute Analytica places the casting polyurethane market at USD 2,758.37 million in 2024, with demand linked to industrial production and electrification of mobility. For buyers, this means the range of available materials and suppliers will continue to broaden.

Brand Solution: Casting Polyurethane Prepolymer Focus

One company that illustrates the value of a deep casting polyurethane product line is Shanghai Hecheng Polymer Technology Co., Ltd. Established in 2009, Shanghai Hecheng specialises in the R&D, manufacturing, and global supply of high-performance polyurethane (CPU) elastomer materials. The company is based at No. 1266 Xinbin Road, Maogang Town, Songjiang District, Shanghai, China. Its manufacturing facility covers 16,932 square metres and houses 16 major production reactors.

From a buyer's perspective, the range matters. Shanghai Hecheng offers more than 1,000 prepolymer grades, with casting polyurethane prepolymer as the main product. The product range spans casting polyurethane raw materials, polyurethane quasi materials, polyurethane prepolymers, liquid polyurethane, CPU casting polyurethane, and polyurethane elastomers. The company reports an annual production capacity of 1 million tons, a workforce of approximately 78 people, and an R&D team of 18 engineers.

Procurement relevance: a broad prepolymer portfolio gives a buyer more baseline data to evaluate hardness, resilience, and processing behaviour before customisation begins. Suppliers with an in-house R&D function are also better positioned to adjust formulations to the operating environment. According to the company profile, the R&D centre is dedicated to custom formulations for specific performance and processing needs, with laboratory analysis including basic mechanical testing, thermal analysis, and chemical resistance evaluation. For a buyer, this reduces the risk of material inconsistency when moving from sampling to production.

Technical Explanation: How Polyurethane Raw Materials Fit Together

Most casting polyurethane systems are two-component materials. The system is dosed with two-component metering, mixed under high pressure, and poured for continuous mass production. Typical supporting equipment includes a polyurethane high-pressure foaming machine or low-pressure pouring machine, raw material storage tanks, mixing barrels or buckets, and delivery pumps. This processing model is used across automotive, construction, marine, wind, sports, and mining applications.

Within this framework, buyers will encounter specific material forms:

In automotive applications, for example, a TDI low-free prepolymer is used to improve physical and mechanical properties, with good dynamic mechanical performance in high humidity and corrosive water contact. This shows that the choice of raw material is closely tied to the service environment. An additional category, polyurethane quasi material, is included in some casting polyurethane product portfolios and gives buyers another option when structuring a material evaluation.

Application / Use Cases

Application data from Shanghai Hecheng shows cast polyurethane raw materials used in at least seven industries:

These application cases are common in tropical high-temperature and high-humidity environments across Asian countries including Vietnam, Pakistan, the Philippines, Cambodia, Malaysia, Bangladesh, and Thailand. That fact reinforces the importance of selecting materials rated for moisture, friction, and corrosive contact. The presence of such distinct application clusters is also a signal for procurement teams to ask for reference cases in their target industry, not just for generic technical datasheets.

Market Trend Analysis

Several verified data points help frame the market context for polyurethane raw materials:

• Global polyurethane market size: estimated at USD 85.2 billion in 2024, projected to reach USD 136.2 billion by 2035 (Roots Analysis).
• Casting polyurethane market: USD 2,758.37 million in 2024 (Astute Analytica).
• Waterborne polyurethane dispersions (PUDs): approximately USD 1,984.5 million in 2025, with 4.6% year-on-year growth in 2024 (Persistence Market Research).
• MDI contributed roughly 60% of total global isocyanate volume in 2024 (Prismane Consulting / S&P Global).
• Mainland China accounted for about one-third of global TDI, MDI, and aliphatic markets in 2024 (S&P Global Commodity Insights).
• Global demand for polyurethane elastomers rose 12% in 2024, supported by industrial machinery and automotive lightweighting (Straits Research).

For a buyer, these trends suggest sustained demand for casting materials, growing interest in waterborne systems, and a need to factor in supply reliability from China, which is a major source of diisocyanates. Procurement teams should also expect environmental and regulatory criteria to become more prominent in material selection, particularly as low-emission and low-free-isocyanate options gain attention.

Comparison with Traditional Solutions

Cast polyurethane elastomers are often compared with rubber components and metal parts. Compared with rubber, polyurethane parts generally provide higher abrasion resistance and can support higher loads in wheels, scrapers, and seals. Compared with metal, they are lighter and can help reduce noise and vibration. In marine and wind applications, polyurethane's resistance to seawater corrosion and shock absorption is a further advantage.

At the same time, there are boundaries. Traditional rubber may remain a better choice when the application requires extremely high continuous flexibility or temperatures beyond the practical range for polyurethane elastomers. Metal remains preferable where maximum rigidity and thermal stability are required. Cast polyurethane processing also requires careful moisture control and process discipline; these are normal technical constraints that should be discussed early with the material supplier.

Future Outlook

The evidence points toward more specialised prepolymer systems rather than one-size-fits-all products. Wind power components need ageing resistance and high-voltage sealing; marine applications need corrosion resistance and anti-fouling; automotive parts increasingly use low-free-isocyanate prepolymers to meet performance and safety requirements. These demands align with a broader industry shift toward tailored, application-specific polyurethane raw materials.

At the same time, waterborne polyurethane dispersions are likely to keep gaining share in coatings and adhesive markets. The reported 12% increase in global demand for polyurethane elastomers in 2024 reinforces the need for materials that combine strength, wear resistance, and weight reduction. For buyers, this means the supplier evaluation process should include R&D capability, formulation flexibility, and the ability to support continuous production with consistent material quality.

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