Shanghai Handai Chemical Officially Unveils Its 28th Innovative Product of 2026: HYH6728 Solvent-Free Mannich Base Curing Agent

Handai Chemical continues to deepen its innovation in the field of low-temperature curing agents with the launch of its 28th innovative product of 2026—the HYH6728 Solvent-Free Mannich Base Curing Agent. As a high-performance product specifically engineered for low-temperature curing epoxy resin systems, this curing agent is refined using a solvent-free process, completely eliminating the addition of benzyl alcohol from the source. It perfectly balances environmental friendliness with excellent performance, further enriching the company's high-performance curing agent product portfolio and putting into practice the brand philosophy of 'Innovating for a better life.'

The core advantages of HYH6728 are distinct, offering a combination of adaptability and practicality. The product is easy to use, requiring no complex application equipment. It efficiently promotes the curing of epoxy resins in low-temperature environments above 0°C, significantly shortening construction cycles, markedly improving project delivery efficiency, and effectively solving the construction challenges posed by low-temperature conditions. The coating formed after curing has a dense structure, exhibiting outstanding water resistance and chemical resistance. It can reliably withstand erosion from humid environments and various industrial media, ensuring long-term stability of the substrate.

The product appears as a colorless to slightly yellow liquid with stable properties and good transparency. Featuring a low-viscosity design, its viscosity is precisely controlled between 400-700 cps at 25°C, offering excellent fluidity and outstanding compatibility with epoxy resins. It is easy to mix and stir, adapting to various application processes, thereby reducing construction difficulty and labor costs. Furthermore, with an amine hydrogen equivalent of 75, it ensures accurate mixing ratios and stable reactions, providing greater flexibility for formulation design.

Thanks to its comprehensive and balanced performance, HYH6728 has a wide range of applications. It can be flexibly adapted to high-solid coatings, industrial flooring systems, high-performance adhesives, and various repair materials. It can also be used in combination with other amine curing agents as an accelerator to further enhance the curing efficiency and overall performance of the system, providing efficient, environmentally friendly, and stable curing solutions for high-end projects.

Handai Chemical: Innovating for a better life.