Super absorbent polymer materials

Superabsorbent polymers crosslinked with poly(aspartic acid) and 1,8-diaminooctane/cystamine address biodegradability and performance issues, offering high absorption and structural integrity with cost-effectiveness and environmental benefits.

WO2026093978A1 Publication Date: 2026-05-07PLANET SMART LTD
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Patent Information

Application Number
PCT/IB2025/061102
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-10-31
Filing Date
2025-10-30
Publication Date
2026-05-07

AI Technical Summary

Technical Problem

Biodegradable superabsorbent polymers face challenges such as high production costs, poor fluid retention, inadequate absorption under load, and structural integrity issues, while maintaining industry-level performance and biodegradability.

Method used

Development of superabsorbent polymers comprising poly(aspartic acid) crosslinked with 1,8-diaminooctane and/or cystamine, achieving high water absorption capacity, saline absorption, and degradation upon hydrolysis at 15°C within 20 days, with enhanced properties like centrifuge retention and free swell capacity.

Benefits of technology

The polymers exhibit improved absorption capabilities and biodegradability, meeting industry standards with efficient fluid retention and structural integrity, while being cost-effective and environmentally friendly.

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Abstract

Provided herein are biodegradable, superabsorbent polymers (SAPs) and hydrogels, methods of preparing the same, and articles of manufacture comprising the superabsorbent polymer or hydrogels. The superabsorbent polymer and hydrogels comprise a poly(aspartic acid) polymer crosslinked with one or more crosslinking agents and can be used to prepare articles of manufacture, such as diapers, sanitary pads, incontinence products, bandages, wound dressings, surgical pads, pet pads, bed pads, meat pads, and agricultural products.
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