Kastar introduces high-tack MS Polymer sealants combining low emissions, strong adhesion, and long-term reliability for global green construction markets.
As global construction markets tighten their expectations around environmental compliance and long-term material performance, sealant manufacturers are under increasing pressure to deliver products that meet both regulatory and practical jobsite demands. Responding to this shift, Kastar has introduced a new generation of high-tack MS Polymer sealants designed specifically for green construction applications worldwide. These products reflect a growing industry move away from traditional solvent-based and polyurethane sealants toward cleaner, safer, and more durable alternatives.
Across regions such as the United States, the United Kingdom, Australia, and New Zealand, builders, architects, and specifiers are re-evaluating the materials used in construction and renovation projects. Low-emission products are no longer optional add-ons; they have become baseline requirements. Sealants, in particular, are drawing closer scrutiny because of their potential impact on indoor air quality, worker safety, and long-term structural integrity. Against this backdrop, MS Polymer sealants are gaining attention for their ability to combine environmental responsibility with strong mechanical performance.
The high-tack MS Polymer sealants introduced by Kastar are formulated without solvents or isocyanates and cure through a moisture-driven process. This chemistry allows the sealant to deliver strong initial grab while still retaining elasticity over the long term. In practice, this means joints and bonded components remain secure while accommodating natural movement caused by temperature changes, vibration, or structural settling. The sealant adheres effectively to a wide range of construction substrates, including concrete, metals, brickwork, and coated surfaces that are traditionally difficult to bond. This versatility makes it suitable for both new-build projects and renovation or repair work on aging structures.
A distinguishing factor behind this product line is the company’s direct involvement in the development of national MS polymer sealant standards in China. Rather than simply complying with published requirements, Kastar has actively contributed to shaping them. This participation has provided deep insight into where sealants often fail during standardized testing and, more importantly, under real-world site conditions. That experience feeds directly into product formulation and testing strategies.
According to Chief Engineer Tom Zhou, understanding standards from the inside highlights the practical causes of sealant failure, such as incompatibility with certain substrates, instability under extreme weather, or performance degradation over time. This knowledge has driven the company to prioritize balanced performance—ensuring products perform reliably across different climates, surfaces, and installation scenarios instead of excelling in only one narrow metric.
On construction sites, trade-offs are unavoidable. Contractors need sealants that apply smoothly, bond quickly, and allow work to proceed without delays, but they also need assurance that the material will continue to perform years after installation. Overemphasizing fast cure times can compromise durability, while focusing only on longevity can slow down application. Kastar’s high-tack MS Polymer sealants are designed to manage this balance by offering strong early adhesion alongside long-term flexibility and resilience.
Once cured, the sealant can be painted over with many commonly used architectural coatings, an advantage for interior applications and refurbishment projects where visual integration is important. This feature reduces additional finishing steps and improves overall project efficiency.
Consistency in quality is another critical requirement for global supply. Kastar operates a 50,000 m² manufacturing facility supported by a CMA-certified laboratory. Each production batch undergoes extensive testing across more than 100 parameters, with retained samples stored for traceability. This system helps ensure that products delivered to overseas markets perform consistently, regardless of shipping distance or climate.
The company’s ongoing innovation is supported by three dedicated in-house R&D laboratories focusing on silicone sealants, MS polymer materials, and specialty functional sealants. Collaboration with Tsinghua University further supports formulation refinement, enabling products to perform reliably in environments ranging from harsh winters to extreme summer heat.
With 27 years of experience in construction adhesive and sealant manufacturing, Kastar supplies markets across North America, Europe, Oceania, the Middle East, and Southeast Asia. Its OEM and ODM capabilities allow partners to tailor formulations, packaging, and branding to local regulatory frameworks and market preferences. As construction standards continue to evolve globally, the company positions its MS Polymer sealant portfolio as a practical solution that aligns environmental responsibility with dependable, long-term performance.
