535141

Poly(isobutylene-co-maleic acid) sodium salt

crosslinked, powder, <900 μm particle size (95%)

• Synonym(s): Isobutylene-maleic anhydride copolymer sodium salt
• Linear Formula: (C₄H₈)_m(C₄H₄O₄)_n · xNa
• CAS Number: 39612-00-5
• MDL number: MFCD00192411
• UNSPSC Code: 12162002
• PubChem Substance ID: 24878075

Properties

• form: crosslinked, powder
• particle size: <900 μm (95%)
• capacity: 200 mL/g absorption capacity (distilled water); 30 mL/g, absorption (4 wt. % saline solution)
• mp: >300 °C
• density: 1.3 g/mL at 25 °C (lit.)
• SMILES string: CC(C)=C.OC(=O)\C=C\C(O)=O.OC(=O)\C=C\C(=O)O[Na]

Description

General description

Superabsorbent polymer. Minimal water released under pressure. Good stability in hot and cold water. Moisture released at lower relative humidity. Stable up to ~280°C

Application

Used in hygiene products to increase liquid absorbency, as soil additive to increase water retaining capacity, as dehydrating agent in construction applications, and coagulating agent for mud to prevent outflow of mud.