Polymer Synthesis Chemicals
49 products
Polymer Synthesis Chemicals
Monomers, initiators & chain-transfer agents for polymerization reactions
49 products
49 products
polymer synthesis chemicals
Hexamethylene Diamine
CAS: 124-09-4
Hexamethylene diamine (HMDA) is the diamine monomer for nylon 66 production and a versatile building block for polyurethane chain extenders, epoxy curing agents, and crosslinker synthesis. HMDA reacts with adipic acid to form nylon 66 salt, which is polymerized to produce nylon 66 fibers and engineering plastics with outstanding mechanical strength and thermal performance.
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Hydroxyethyl Acrylate
CAS: 818-61-1
Hydroxyethyl acrylate (HEA) is a hydroxyl-functional acrylic monomer that introduces pendant -OH groups into copolymer chains, enabling crosslinking with isocyanates, melamines, and other reactive curatives. It is widely used in two-component waterborne and solventborne coatings, radiation-curable systems, and polymer-supported catalyst applications.
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Hydroxypropyl Methacrylate
CAS: 27813-02-1
Hydroxypropyl methacrylate (HPMA) is a hydroxyl-functional methacrylic monomer that incorporates pendant hydroxyl groups with greater hydrophobicity than HEA. It is the preferred functional monomer for high-solids acrylic coatings, automotive refinish systems, and thermosetting powder coatings where controlled crosslink density and weather resistance are critical.
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Itaconic Acid
CAS: 97-65-4
Itaconic acid (IA) is a bio-based, bifunctional unsaturated dicarboxylic acid monomer produced by fermentation of sugars. It provides both vinyl polymerizability and two carboxyl groups for crosslinking, adhesion, and hydrophilicity enhancement. IA is an important green alternative to petrochemical monomers in SBR latex, acrylic emulsions, and superabsorbent polymers.
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Lysine Diisocyanate
CAS: 39932-60-0
Lysine diisocyanate (LDI) is a bio-based aliphatic diisocyanate derived from L-lysine, offering a renewable alternative to petrochemical isocyanates such as HDI. LDI-based polyurethanes are used in biomedical applications, biodegradable scaffold materials, and eco-label coatings due to their excellent biocompatibility, low cytotoxicity, and aliphatic character providing UV stability.
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Maleic Anhydride
CAS: 108-31-6
Maleic anhydride (MAH) is a highly reactive electron-poor monomer used in alternating copolymerization, maleic anhydride grafting, and unsaturated polyester synthesis. It serves as a reactive handle for polymer functionalization through its anhydride group, which readily reacts with amines, alcohols, and epoxides for crosslinking and compatibilization.
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Methacrylic Acid
CAS: 79-41-4
Methacrylic acid (MAA) is an alpha-methyl substituted acrylic monomer offering improved thermal stability and glass transition compared to acrylic acid. It is widely used as a functional co-monomer in emulsion polymers, ion-exchange resins, and adhesive formulations to introduce acid groups for crosslinking and adhesion enhancement.
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Methyl Methacrylate
CAS: 80-62-6
Methyl methacrylate (MMA) is the primary monomer for poly(methyl methacrylate) (PMMA) and a key hard monomer in acrylic coatings, adhesives, and emulsion polymers. Its homopolymer exhibits exceptional optical clarity, UV stability, and weatherability. MMA is used in both bulk cast sheet production and emulsion/solution copolymerization.
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N-Vinylpyrrolidone
CAS: 88-12-0
N-Vinylpyrrolidone (NVP) is the monomer for polyvinylpyrrolidone (PVP) and a versatile reactive diluent in UV-curable systems. PVP exhibits exceptional water solubility, biocompatibility, film-forming ability, and complexation capacity. NVP copolymers are used in pharmaceuticals, personal care, adhesives, and specialty coatings.
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Nonylphenol Ethoxylate NP-10
CAS: 9016-45-9
Nonylphenol ethoxylate NP-10 is a nonionic surfactant with 10 ethylene oxide units, widely used as a co-emulsifier and stabilizer in emulsion polymerization. It provides steric stabilization to latex particles, improving freeze-thaw and shear stability. Due to APEO environmental regulations, NP-10 is increasingly substituted by alkyl polyglucosides or alcohol ethoxylates in regulated markets.
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Pentaerythritol Triacrylate
CAS: 3524-68-3
Pentaerythritol triacrylate (PETA) is a trifunctional acrylate crosslinker with a residual hydroxyl group that provides enhanced adhesion to polar substrates and compatibility with urethane acrylate oligomers. PETA is widely used in UV-curable hard coats for plastics, anti-scratch optical films, and high-crosslink-density ink formulations.
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Potassium Persulfate (KPS)
CAS: 7727-21-1
Potassium Persulfate (K2S2O8) is a high-purity, water-soluble peroxide salt primarily used as a thermal initiator in emulsion and suspension polymerization of acrylic, styrene, vinyl acetate, butadiene and acrylonitrile monomers. Its decomposition into sulfate radicals at 50-80 C provides controlled, reproducible initiation rates and yields polymers with low residual monomer and narrow molecular weight distribution. KPS is also used for desizing in textile finishing, as a depolymerization agent for starch and cellulose, and as a strong oxidant in analytical chemistry. Compared with ammonium persulfate, KPS is preferred where ammonium ions interfere with the final application (e.g., latex for paper coating).
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Sodium Dodecyl Sulfate (SDS)
CAS: 151-21-3
Sodium dodecyl sulfate (SDS), also known as sodium lauryl sulfate (SLS), is the benchmark anionic surfactant and emulsifier for emulsion polymerization. It stabilizes monomer droplets and latex particles through electrostatic repulsion, controlling particle size and latex stability. SDS is also a primary emulsifier in personal care, pharmaceuticals, and detergent formulations.
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Sodium Dodecylbenzene Sulfonate (SDBS)
CAS: 25155-30-0
Sodium dodecylbenzene sulfonate (SDBS) is a branched-chain anionic surfactant and emulsifier for emulsion polymerization, offering improved electrolyte tolerance and foam stability compared to SDS. It is widely used as the primary or co-emulsifier in acrylic, styrene-acrylic, and vinyl ester emulsion polymers, providing robust particle stabilization under process pH and electrolyte conditions.
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Sodium Vinyl Sulfonate
CAS: 3039-83-6
Sodium vinyl sulfonate (SVS) is a water-soluble anionic functional monomer used to introduce sulfonate groups into polymer backbones. Sulfonate groups provide strong anionic charge, hydrophilicity, electrolyte tolerance, and enhanced latex colloidal stability. SVS is used as a co-monomer in emulsion polymerization, ion-exchange resin synthesis, and antistatic polymer coatings.
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Styrene Monomer
CAS: 100-42-5
Styrene monomer (vinylbenzene) is a fundamental building block for polystyrene, ABS, SBR rubber, and styrenic copolymers. It undergoes free-radical, anionic, and cationic polymerization to produce a wide range of commercial polymers. High-purity grades with controlled inhibitor levels are available for emulsion, suspension, and bulk polymerization processes.
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Terephthalic Acid (PTA)
CAS: 100-21-0
Purified terephthalic acid (PTA) is the aromatic diacid monomer for PET (polyethylene terephthalate) production — the world's most widely manufactured polyester. PTA reacts with ethylene glycol to produce PET resin used in bottles, films, and fibers. High-purity PTA with extremely low 4-CBA content is required for fiber and bottle-grade PET applications.
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Tert-Butyl Peroxybenzoate
CAS: 614-45-9
Tert-butyl peroxybenzoate (TBPB) is a high-temperature organic peroxide initiator with a 10-hour half-life temperature of 104°C, suited for bulk and high-temperature suspension polymerization, as well as crosslinking of polyethylene and rubber compounds. It produces benzoyloxy and tert-butoxy radicals and is often used in combination with AIBN or BPO for two-stage cure profiles.
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Thioglycolic Acid
CAS: 68-11-1
Thioglycolic acid (TGA) is a bifunctional thiol acid used as a chain transfer agent in acrylic and vinyl polymerization, and as the active ingredient in cold wave and depilatory formulations. In polymer synthesis, TGA introduces carboxyl-terminated chain ends that enhance colloidal stability and provide coupling sites for further functionalization.
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Trimethylolpropane Triacrylate
CAS: 15625-89-5
Trimethylolpropane triacrylate (TMPTA) is a trifunctional acrylate crosslinker and reactive diluent widely used in UV/EB-curable coatings, inks, and adhesives. Its three acryloyl groups enable rapid network formation upon radical initiation, yielding hard, scratch-resistant, and solvent-resistant crosslinked films with excellent surface cure speed.
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Vinyl Acetate Monomer
CAS: 108-05-4
Vinyl acetate monomer (VAc) is the key monomer for polyvinyl acetate (PVAc) and vinyl acetate-ethylene (VAE) copolymer dispersions used in construction adhesives, interior paints, and paper coatings. It is also the precursor for polyvinyl alcohol (PVOH) and polyvinyl butyral (PVB) through saponification.
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Vinyl Chloride Monomer
CAS: 75-01-4
Vinyl chloride monomer (VCM) is the fundamental monomer for polyvinyl chloride (PVC), the world's third-largest volume thermoplastic. VCM is polymerized by suspension, emulsion, and bulk processes to produce PVC resins with diverse molecular weights and applications. Strict containment and safety infrastructure is required for handling this classified carcinogen.
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Vinylidene Chloride
CAS: 75-35-4
Vinylidene chloride (VDC) is the monomer for polyvinylidene chloride (PVDC) copolymers, which provide exceptional oxygen, water vapor, and flavor barrier properties. VDC copolymers with vinyl chloride or acrylates are used as barrier coatings for flexible food packaging, pharmaceutical blister films, and high-performance barrier films.
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n-Dodecyl Mercaptan (n-DDM)
CAS: 112-55-0
n-Dodecyl mercaptan (n-DDM) is the most widely used chain transfer agent in free-radical polymerization, employed to control molecular weight in emulsion and solution polymerization of styrene, acrylics, and SBR rubber. Its thiol group transfers a hydrogen radical to the growing polymer chain, terminating it and starting a new chain at the sulfur center.
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