Activated Molecular Sieve Powder for Polyurethane Adhesive

Xintao will participate in AES CHINA 2025

Xintao will participate in the 28th China International Adhesives & Sealants Exhibition, held at the Shanghai New International Expo Center from September 17 to 19, 2025. At this exhibition, we will fully showcase our comprehensive line of powdered molecular sieve products, including 3A, 4A, 5A, 13X, and modified activated molecular sieve powder. We will also dispatch our professional sales, technical, and R&D representatives. We sincerely invite you to visit Xintao’s booth W2372 to learn more about the applications of powdered molecular sieves in the polyurethane adhesives. Our team will provide you with professional answers and efficient solutions.

About AES CHINA 2025

The China International Adhesives & Sealants Exhibition (ASE CHINA) is a professional exhibition focusing on adhesives, sealants, tapes, and films, and is accredited by UFI. With 27 years of experience in the adhesives industry, the exhibition leverages its strong brand influence and industry appeal to integrate core resources across the entire adhesives, sealants, and films industry chain, focusing on high-end products and providing innovative, environmentally friendly, and high-performance bonding, sealing, and protective materials to various industries.

During the polyurethane synthesis process, trace amounts of moisture can cause bubble formation and degrade product quality and performance. With over 20 years of experience in the chemical adsorption field, Xintao’s independently developed activated molecular sieve powder provides an efficient and reliable solution to this problem.

Xintao activated molecular sieve powder

Xintao activated molecular sieve powder is a white powder with a uniform nano-scale microporous structure, ranging in size from 2-4 microns. It is produced from raw molecular sieve activated powder by high-temperature calcination. This process removes most of the moisture from the raw molecular sieve powder, making it highly active and suitable for direct use as a selective adsorbent in polyurethane production. Xintao molecular sieve zeolite powder is available in a variety of types, including 3A activated molecular sieve powder, 4A activated molecular sieve powder, 5A activated molecular sieve powder, 13X activated molecular sieve powder, and modified activated molecular sieves powder. They exhibit excellent water absorption properties, with static water adsorption values reaching 23%-27%.

Activated Molecular Sieve Powder Advantages

  • Efficient Moisture Removal: The activated molecular sieve powder has a high specific surface area and abundant microporous structure, enabling rapid dehydration of polyether polyols.
  • Eliminating Bubble Formation: By removing moisture, the reaction between water and isocyanate to form CO₂ is blocked, thereby suppressing bubble formation.
  • Improving Product Quality: Removing moisture and bubbles prolongs the cure time of two-component polyurethanes, improving their hardness and bonding strength.

Molecular Sieve Powder Applications

  • Production Stage: During the production of two-component polyurethane, adding it to either component A or component B effectively removes moisture and improves product quality.
  • Application Stage: Adding molecular sieve powder to polyurethane products before application eliminates bubbles and improves product appearance and performance.
  • Storage Stage: During storage of two-component polyurethane, adding it prevents moisture intrusion and ensures stable product quality.

Other Applications

Contact us

Jiangxi Xintao Technology Co., Ltd.

Address: Shangxian West Road, New Third Board Industrial Park, Pingxiang Economic and Technological Development Zone, Pingxiang City, Jiangxi Province

Website: www.xtadsorbents.com
Email: export@xt988.com

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Xintao Factory is equipped with a series of industry-leading production equipment, with 10 fully automatic integrated production lines.

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