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Latest Technological Advances various strategies and additives Polyurethane Prepolymer Amine Curing Agents
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Latest Technological Advances various strategies and additives Polyurethane Prepolymer Amine Curing Agents

Our Anti-Hydrolysis Agent is a cutting-edge solution formulated to enhance the resistance of polyurethane products to hydrolysis. It is specifically designed for MDI (Methylene Diphenyl Diisocyanate) based polyurethane prepolymers and is an ideal choice for amine curing agents. Our meticulously created formulation ensures superior hydrolysis resistance, providing extended durability to the final polyurethane product.
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  • Amine- HCA™ C3 -LF

  • Bio-SAH™

  • Amine- HCA™ C3 -LF

Polyurethane (PU) products, especially those designed with MDI (methylene diphenyl diisocyanate), are known for their excellent durability and resistance to a variety of environmental factors. However, like many polymers, polyurethanes can be susceptible to hydrolysis, especially when exposed to water or humid conditions over an extended period. To enhance the hydrolytic stability of MDI-based polyurethane products, various strategies and additives can be employed:

  1. Polyol Selection:

    • The choice of polyol, one of the main components in polyurethane production, can significantly impact hydrolytic stability. Certain polyols, such as polyethers, are known for providing better resistance to hydrolysis compared to polyester polyols.

  2. MDI Crosslinking:

    • MDI-based polyurethanes can be formulated to enhance crosslinking density. Crosslinked structures are generally more resistant to hydrolysis. Isocyanate groups in MDI can react with hydroxyl groups in polyols to form urethane linkages, contributing to a more stable polymer network.

  3. Hydrolysis Resistant Chain Extenders:

    • The choice of chain extenders can influence the hydrolytic stability of polyurethane. Some chain extenders are more resistant to hydrolysis than others. Using hydrolysis-resistant chain extenders can improve the overall stability of the polymer.

  4. Addition of Hindered Amine Light Stabilizers (HALS):

    • HALS are additives commonly used in polymers to protect against degradation caused by exposure to light and heat. While they are not specifically designed to combat hydrolysis, their inclusion can contribute to the overall stability of polyurethane products.

  5. Incorporation of Anti-Hydrolysis Agents:

    • Anti-hydrolysis agents, such as hindered phenols or other stabilizers, can be added to the polyurethane formulation to specifically mitigate the effects of hydrolysis. These agents form a protective barrier against water penetration and help preserve the integrity of the polymer.

  6. Surface Coatings or Treatments:

    • Applying hydrophobic surface coatings or treatments to polyurethane products can provide an additional layer of protection against water absorption and hydrolysis. This is particularly important in applications where the material is exposed to moisture.

  7. Quality Control in Manufacturing:

    • Ensuring precise control over the manufacturing process, including proper curing and post-curing steps, can contribute to the hydrolytic stability of polyurethane products. Proper processing parameters help in achieving the desired crosslinking and structural integrity.

It's important to note that the effectiveness of these strategies can depend on the specific application, environmental conditions, and the overall formulation of the polyurethane. Manufacturers often conduct thorough testing and quality control measures to ensure that their polyurethane products meet the required standards for hydrolytic stability in the intended end-use environments.


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Suzhou Ke Sheng Tong New Materials Technology Co., Ltd. was founded in 2016, headquartered in Suzhou, Jiangsu Province, as a high-tech growth enterprise.

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