DuPont (a DuPont member company) ion exchange resins and macroporous adsorption resins

【Answer 1】 No. Model Name Product Features and Applications 1 IMAC HP1110Na Gel-type strong-acid styrene-based resin Produced without using dichloroethane; especially suitable for drinking water, food, and fruit juice production. 2 IMAC HP333 Macroporous weak-acid acrylic resin High exchange capacity and low volume change; suitable for removing carbonate hardness from water, and for improving water taste by removing heavy metals and chlorides. 3 IMAC HP336 Macroporous weak-acid acrylic resin High exchange capacity and low volume change; suitable for alkalinity removal from drinking water and water treatment in the food industry. 4 IMAC HP555 Macroporous strong-base styrene-based resin High exchange capacity; suitable for nitrate removal from water. 5 IMAC HP661 Macroporous weak-base styrene-based resin High exchange capacity; suitable for preparing deionized water in the food industry. 6 AMBERLITE SR1LNa Gel-type strong-acid cation exchange resin Suitable for softening drinking water and food-grade water. VI. Introduction to DOWEX Series Resins No. Model Name Product Features and Applications 1 DOWEX MARATHON C Strong-acid cation exchange resin Uniform-particle gel-type ion exchange resin for industrial water softening. 2 DOWEX HCR & HCR-S/S Strong-acid cation exchange resin Conventional gel-type ion exchange resin for residential water softening. 3 DOWEX MARATHON MSC Strong-acid cation exchange resin Uniform-particle macroporous ion exchange resin for high-oxidizing conditions. 4 DOWEX MAC-3 Weak-acid cation exchange resin Alkalinity and salt removal. 5 DOWEX MARATHON WBA Weak-base anion exchange resin Macroporous uniform-particle resin with high exchange capacity and high exchange rate; suitable for high-flow-rate systems. 6 DOWEX MARATHON A Strong-base anion exchange resin High-capacity, high-efficiency uniform-particle gel-type resin for anion exchange columns or mixed-bed applications. 7 DOWEX MONOSPHERE 650C Strong-acid cation exchange resin Premium-grade resin for condensate polishing. 8 DOWEX MONOSPHERE 550A Strong-base anion exchange resin Premium-grade resin for condensate polishing. 9

A century-old legacy — the secret of resins in biopharmaceuticals

【Answer 2】 Gazing upon our world, profound transformations have taken place. Rohm and Haas Company (now DuPont Water Solutions) has been manufacturing resin products for over eighty years. In the 1990s, as the inventor and technological leader in ion exchange resins, Rohm and Haas Company (now DuPont Water Solutions) introduced the world’s most advanced adsorption-decolorization ion exchange resin technology into China. It was precisely this resin technology that laid the foundation for the rapid development of China’s antibiotic industry—enabling domestic production of antibiotics (e.g., cephalosporins, erythromycin) to reach world-leading levels. Concurrently, Rohm and Haas and Dow (now DuPont Water Solutions) ion exchange resins demonstrated superior adsorption capacity and strength in amino acid (e.g., lysine) extraction, significantly enhancing production efficiency at Chinese amino acid manufacturers. At the dawn of the 21st century, Rohm and Haas Company (now DuPont Water Solutions) pioneered the introduction of acrylic-based macroporous strong-base anion exchange resin technology tailored to heparin extraction processes—greatly improving heparin recovery potency and regeneration efficiency. Specialized resin products developed specifically for vitamin B12 production likewise substantially enhanced extraction efficiency and purity. Today, DuPont Water Solutions resin products continue to enjoy broad application across the biopharmaceutical sector. Biopharmaceutical molecule production comprises two stages: Upstream processing: involving microbial fermentation or chemical synthesis. Downstream processing: aimed at capturing, separating, purifying, and polishing target proteins, peptides, or active molecules. As the global market leader in ion exchange resins, we offer a wide range of resin products based on hydrophobic (polystyrene-divinylbenzene) or moderately hydrophilic (polyacrylic) matrices—specifically engineered for downstream separation and purification of small-molecule bioproducts such as peptides, oligonucleotides, antibiotics, and natural extracts. Peptides Peptides can be produced either via chemical synthesis (solid-phase or liquid-phase) or through recombinant gene expression. In both cases, polymeric adsorption resins (e.g., AMBERCHROM™ CG and XT series) are applicable for capture and polishing steps. Compared with silica-based chromatography media, AMBERCHROM™ products offer distinct advantages: they permit in-place cleaning and sterilization using caustic soda (1 M NaOH at 60°C). This enables comprehensive cleaning and sterilization of production equipment, thereby preventing product carryover or contamination by endotoxins and viruses. AMBERCHROM™ products remain stable in any solvent across the full pH range and exhibit excellent mechanical stability. This, in turn, allows manufacturers to produce certain products more efficiently, economically, and with lower environmental impact. Oligonucleotides Oligonucleotides are DNA or RNA polymers used as probes for DNA or RNA detection in research, gene therapy, molecular diagnostics, and forensic science. They can be synthesized chemically or enzymatically. AMBERCHROM™ resins are applicable for purifying liposome-conjugated oligonucleotides and PEGylated aptamers. Antibiotics Antibiotics are drugs used to prevent or treat bacterial infections.

DuPont Launches AmberChrom XT SL Chromatography Resins

Apr 14, 2026

DuPont has introduced new AmberChrom XT SL chromatography resins designed to enhance purification processes for oligonucleotide and peptide therapeutics. These slurried resins simplify downstream operations by eliminating prior hydration needs.

DuPont Launches DuPont™ AmberChrom™ XT SL Chromatography Resins to Simplify Biopharmaceutical Workflows

Financial Times

marketscreener.com

DuPont Rolls Out AmberChrom XT SL to Simplify Biopharma Workflows

TradingView — Track All Markets

2026-04-02

DuPont completes aramids divestiture

2026-04-08

DuPont de Nemours Inc. Stock Outperforms Competitors on Strong Trading Day

2026-04-09

DuPont Expands Water Solutions With Inge UF Integrated Pre-Filter Modules