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Application and Specification of Activated Molecular Sieve Powder

Problem that plagues polyurethane series products

The existence of trace moisture has become a problem that plagues polyurethane series products and metal-rich coatings. Moisture present in typical polyurethane formulations reacts with isocyanate groups to produce ammonia and carbon dioxide, resulting in the formation of air bubbles, which in turn affects product pot life and post-cure smoothness and adhesion, accelerating material aging. In materials based on metal compound formulations, such as coatings rich in zinc and tin, active zinc and tin elements are prone to side reactions with moisture and release hydrogen, which greatly affects product quality. What's more, the paint storage container is prone to overpressure, and may even leak and cause safety accidents.

The phenomenon of foaming products:


At present, the solutions for the water content of the products on the market include chemical reaction adding a reactant to react the water inside, and adding our Activated Molecular Sieve Powder for physical adsorption to absorb the water inside.

     Activated Molecular Sieve Powder can quickly absorb water content, prevent water from reacting with active components, so as to ensure product quality, prolong storage life, and solve the above problems. Based on different system requirements, XINTAO has developed and produced a variety of products such as 3A, 4A, 5A and 13X activated molecular sieve powders with effective pore diameters, which are suitable for different systems to select and absorb water.

What is Activated Molecular Sieve Powder ?

Activated Molecular Sieve Powder is obtained by adding pore-forming agent to the original molecular sieve powder and calcining at high temperature (about 700°C). It has strong activity, and can be directly used in production as an adsorbent with selective adsorption, such as mixed dispersion adsorption with materials, and it is an amorphous desiccant. It can adsorb impurities such as moisture that affect the quality of the product without changing the physical and chemical properties of the product itself.

      XINTAO Activated Molecular Sieve Powder has good dispersibility, fast adsorption speed, strong activity, can reduce moisture, eliminate air bubbles, and improve material uniformity and strength.

Typical application:

(1)2K-Polyurethane coatings and mouldings 

(2)1K-Polyurethane storage protection 

(3)Storage protection for metallic pigment paint

(4)Polysulfide and silicone systems

(5)Carriers for chemicals for controlled release

(6)Processing aid for polymer production

(7)Desiccant for the production of polymer desiccant materials

(8)Cosmetics additive

(9)Storage protection additives for highly hygroscopic goods

(10)Additives for flame retardants

(11)Shift of chemical reaction by removal of water as by product


Electronic potting glue before molding use 4A/5A Activated Molecular Sieve Powder 

Plastic runway use 3A Activated Molecular Sieve Powder

How to use?

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Standard Packaging: