The completion of a polymerization reaction is merely the starting point of material creation. Various additives and functional reagents act as a transformative touch, endowing base polymers with extraordinary properties.

In catalysis and controlled synthesis, dibutyltin dilaurate is the essential driver behind the efficient curing of polyurethanes. 4-Dimethylaminopyridine (DMAP), a powerful acylation catalyst, serves as a precise tool for functionalizing polymer chain ends. For cutting-edge ATRP, ligands such as 2,2'-bipyridine and its derivatives, combined with Cu(I) salts, enable precise control over molecular weight distribution.

Functionalization reagents serve as the bridge connecting chemistry to application. 3-(Trimethoxysilyl)propyl methacrylate, a classic silane coupling agent, constructs robust interfaces in organic-inorganic composites. The terminal alkyne group from propiolic acid allows, via click chemistry with azides, the attachment of "functional tags" like fluorescence or targeting moieties to polymers. The combination of N-hydroxysuccinimide (NHS) with the coupling agent EDC has become the gold standard for conjugating biomacromolecules with polymers.

Special additives address specific challenges. Calcium hydride, a powerful desiccant, safeguards moisture- and oxygen-sensitive reactions. Dodecyl mercaptan, a chain transfer agent, effectively regulates molecular weight in free-radical polymerization. Dicyandiamide, a latent curing agent for epoxy resins, meets the processing requirements of one-component systems needing both shelf stability and high-temperature curing.

These reagents, though used in small quantities, are vital—they hold the key to developing intelligent, functionalized, and high-performance materials. J&K Scientific is committed to supplying high-purity, high-quality specialty reagents and additives, supported by detailed technical documentation, to help you secure a competitive advantage in material innovation.

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For product inquiries, custom quotes, or technical consultation, please contact our expert team directly via email at [jkus@jk-sci.com]. We are here to support your innovation journey.

Related Products

1.Catalysts

• Dibutyltin dilaurate, 97.5%（CAS 77-58-7）
• 4-Dimethylaminopyridine, 99%（CAS 1122-58-3）
• Triisobutylaluminum, 0.95 - 1.10 M（CAS 100-99-2）
• Bis(cyclopentadienyl)titanium dichloride,（CAS 1271-19-8）
• Tetrakis(triphenylphosphine)palladium(0), 99%（CAS 14221-01-3）
• N,N,N',N'-Tetramethylethylenediamine, 99%（CAS 110-18-9）

2.ATRP and RAFT Reagents

• Triphenylphosphine（CAS 603-35-0）
• 2,2'-Bipyridine, 99%（CAS 366-18-7）
• 1,1,4,7,10,10-Hexamethyltriethylenetetramine, 97%（CAS 3083-10-1）
• Tetraethylthiuram disulfide, 97%, an acetaldehyde dehydrogenase (ALDH1) inhibitor（CAS 97-77-8）
• 1,1,4,7,7-Pentamethyldiethylenetriamine, 98%（CAS 3030-47-5）
• Ethyl 2-bromoisobutyrate, 98%（CAS 600-00-0）

3.Polymerization Initiator

• 2,2'-Azoisobutyronitrile（CAS 78-67-1）
• Benzoyl peroxide（CAS 94-36-0）
• Potassium persulfate（CAS 7727-21-1）
• n-Butyllithium（CAS 109-72-8）
• Boron trifluoride diethyl etherate（CAS 109-63-7）
• 2,2-Dimethoxy-2-phenylacetophenone（CAS 24650-42-8）
• Dicyandiamide（CAS 461-58-5）
• Di-tert-butyl peroxide（CAS 110-05-4）