Weak Base Catalyst Ion Exchange Resin, Amine Functionalized

Description

Weak Base Catalyst Ion Exchange Resin, Amine Functionalized, is a macroporous polystyrene–divinylbenzene resin carrying tertiary amine functional groups. Unlike conventional anion resins used for ion exchange in water treatment, this resin is specifically tailored for catalytic functions in organic syntheses, where its weakly basic sites can act as nucleophilic or basic catalysts. It is typically used in reactions such as Knoevenagel condensation, Michael addition, and transesterification processes. The macroporous structure provides enhanced accessibility to active sites, and its polymeric backbone ensures chemical and thermal stability under a variety of reaction conditions.

Applications

• Knoevenagel condensation

• Michael addition reactions

• Transesterification processes

• Catalysis in organic synthesis and fine chemicals

• Scavenger for acidic impurities in reaction streams

• Solid-phase synthesis of pharmaceuticals

• Dehydrohalogenation reactions

Key Features

• Weak base functional groups (tertiary amine)

• Macroporous structure for high surface accessibility

• Excellent swelling stability in organic media

• Regenerable and reusable solid catalyst

• Environmentally friendly replacement for liquid bases

• Applicable across a wide pH and solvent range

Technical Data

• Polymer matrix: Styrene–divinylbenzene copolymer

• Matrix structure: Macroporous

• Functional group: Tertiary amine

• Ionic form: Free base

• CAS number: 69011-18-3 (primary), 9013-34-7 (alternate)

• Appearance: Off-white to pale yellow, opaque spherical beads

Typical Properties (representative values)

• Total base capacity: ≥ 1.2 eq/L

• Moisture content: 45–55%

• Particle size: 300–1200 μm

• Uniformity coefficient: ≤ 1.7

• Shipping weight: ~ 660–700 g/L

• Surface area: ~ 20–35 m²/g

Operating Conditions

• Operating temperature: Max. 100 °C (aqueous), 60–80 °C (organic)

• pH range: 3–10 (for catalyst performance)

• Solvent compatibility: Excellent with polar and non-polar organics

• Regeneration: Acid wash or thermal drying

Packaging Options

25L/PE bag, 5cu.ft/fiber drum, 200L/HDPE drum, 1000L/IBC tote, 1200kg/super sack, or as requested

Safety and Handling

• Avoid prolonged exposure to high heat in dry form

• Store in a sealed container between 5–40 °C

• Use appropriate PPE when handling in catalytic operations

• Dispose of spent resin as per local chemical waste regulations

Equivalent Products (cross-reference)

• DuPont Amberlyst™ A21

• Purolite A170

• Mitsubishi Diaion™ PA306

• Thermax Tulsion® A-21MP