Super absorbent resin and preparation method thereof

US12214091B2 · kind B2 · utility

Assignee

• SHANDONG HAOYUE NEW MATERIALS CO., LTD · CN

Inventors

• Zhiliang YANG · Shandong, CN
• Hao Yang · Shanghai, CN
• Yanyu Ma · Shandong, CN
• Yang Yang · Parsippany, US
• Xiang Zhang · 红钢城街道, CN
• Meiqin YAO · Shandong, CN
• Jinshui YAO · Shandong, CN

Key dates

• Filing date: Jun 22, 2018
• Grant date: Feb 4, 2025
• Expiry date: Jun 6, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L33/02
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to a sodium polyacrylate super absorbent resin for blood absorption with a gradual hierarchical structure. When a blood simulant solution is used as the detection medium, according to ISO 19699-1:2017(E), the absorption capacity of the blood simulant solution is ≥18.0 g/g, Preferably ≥18.5 g/g; the absorption rate of the blood simulant solution is ≤45 s, preferably ≤40 s, more preferably ≤38 s; when human blood is used as the detection medium, according to ISO 19699-1:2017(E), the absorption capacity of the human blood is ≥8.0 g/g, preferably ≥8.3 g/g, more preferably ≥8.6 g/g; the absorption rate of the human blood is ≤45 s, preferably ≤40 s, more preferably ≤35 s, most preferably ≤25 s. The present invention combines organic cross-linking and inorganic cross-linking for surface modification, so that the resin has a gradual hierarchical structure, thereby ensuring that it has excellent blood absorption properties, while also having excellent water absorption properties and gel strength, and other performance.