Sodium Polyacrylate


Superabsorbent polymer, often known as SAP or superabsorbent material (SAM),  High water-absorbent resin finds diverse applications in both consumer and industrial sectors due to its remarkable ability to absorb water and aqueous solutions, absorbing up to 500 times its weight in liquid. Originally developed in the 1960s by the US Department of Agriculture to enhance water conservation in soil, the initial polymer was starch-based, but modern SAP technology shifted to hydrocarbon-derived polymers, High molecular weight water-absorbent material specifically crosslinked acrylic polymers neutralized with sodium.

Superabsorbent polymers have become a staple in the hygiene industry, with around 3 million tons produced annually. Their applications include Hydrogel, Feminine hygiene pads, Fake snow, Wastewater treatment SAP, Agricultural application SAP, Baby and adult diapers, and various incontinence products.

Chemistry of Superabsorbent Polymers: Superabsorbent polymers used in laminates and airlaids are typically formed through the reaction of acrylic acid monomer with sodium hydroxide and a cross-linking agent, resulting in polyacrylic acid sodium salt. Gel Polymerization is the most common technique, where components are sprayed onto a moving belt in the presence of UV light, causing crosslinking. Suspension Polymerization and Solution Polymerization are alternative methods.

Application of Superabsorbent Polymers: When these polymers come in contact with aqueous liquids, such as urine or blood, they absorb water through osmosis. This makes them ideal for personal hygiene and incontinence products, as they can retain large amounts of liquid even under pressure. However, when in contact with liquids containing high salt levels, absorption capacity decreases.

Important Characteristics of Superabsorbent Polymers:

  • Particle size
  • Free swell absorption capacity
  • Absorption capacity under load
  • Water retention properties
  • Rate of water absorption
  • Polymer permeability
  • Gel strength
  • Wicking capability

Application of Superabsorbent Polymers

The Gelsap polymer is extensively used in garden management, flower cultivation, urban greening, large-scale agriculture, vegetable planting, etc.

The Gelsap polymer is widely utilized in gel ice packs, cable powder, oil drilling fluids, wastewater treatment, sand-free sandbags, and other industrial products.

Refers to cat litter made from SAP, a common Gelsap Super Absorbent Polymer known for its durability and absorption qualities, providing an effective and eco-friendly solution for pet waste management.


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Superabsorbent Polymers (SAPs) FAQ

*Superabsorbent Polymers (SAPs) are materials that can absorb and retain large amounts of liquid relative to their own mass. They are used in various applications including hygiene products, agriculture, medical fields, and cold chain transportation.

*SAPs help manage temperature fluctuations and control humidity levels, preventing condensation and protecting temperature-sensitive goods such as food and pharmaceuticals during transit.

*Yes, Superabsorbent Polymers can absorb leaks from melted ice or other cooling agents, keeping packages dry and reducing the risk of spoilage or damage.

*Superabsorbent Polymers maintain the freshness of fruits, vegetables, dairy products, and meats by absorbing excess moisture and maintaining stable temperatures during transit from farm to table.

*SAPs provide stable conditions for temperature-sensitive medicines, vaccines, and biological samples, ensuring they remain effective and safe during transportation.

*SAPs are used to improve soil moisture retention, reducing the need for frequent irrigation and helping plants survive in dry conditions.

*Yes, SAPs can be customized in terms of absorption capacity, size, and form to meet the unique needs of different applications and industries.

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