Acids & Salts
(2-Hydroxypropyl)trimethylammonium formate
CAS 62314-25-4
Quaternary-ammonium trimerization catalyst that drives isocyanate→isocyanurate (PIR) network formation Used in polyisocyanurate (PIR) rigid foam boardstock and panels for fire-resistant insulation Promotes crosslink density/thermal stability in rigid PU/PIR systems
Crosslinking / Curing
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Silanes & Organosilanes
(3-Aminopropyl)silanetriol
CAS 58160-99-9
A water-soluble aminosilane triol, the hydrolysis-stable form of an aminopropyl silane coupling agent. Aminofunctional silanes of this class act as coupling agents and adhesion promoters, bonding inorganic substrates such as glass, mineral fillers, and metals to organic resins.
Coupling / Adhesion Promotion
Crosslinking / Curing
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Silanes & Organosilanes
(3-Chloropropyl)trimethoxysilane (CPTMS)
CAS 2530-87-2
A chloro-functional silane that bridges inorganic fillers to organic resins while leaving a reactive propyl-chloride handle for further derivatization. It is used as a coupling agent in filled composites and treated textile goods, as an adhesion promoter, and as an intermediate for synthesizing other organosilicon…
Coupling / Adhesion Promotion
Crosslinking / Curing
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Silanes & Organosilanes
(3-Mercaptopropyl)trimethoxysilane (MPTMS)
CAS 4420-74-0
A thiol-bearing silane bridge that ties polymers to inorganic fillers, glass, and metal. It is used as an adhesion and coupling promoter in polysulfide and polyurethane caulks and sealants and as a binder linking organic polymers to mineral and metal surfaces.
Coupling / Adhesion Promotion
Crosslinking / Curing
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Amines & Amides
1-(3-Aminopropyl)imidazole
CAS 5036-48-6
Reactive (incorporable) imidazole catalyst for semi-rigid and flexible PU foam Primary-amine handle lets the catalyst bind into the polymer, lowering emissions Also used as an epoxy curing agent/accelerator
Crosslinking / Curing
Corrosion Inhibition
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Specialty Additives
1-(Biphenyl-4-yl)-2-methyl-2-morpholinopropan-1-one
CAS 94576-68-8
Type I alpha-aminoketone photoinitiator for low-migration cure of pigmented UV coatings (Coatings & Construction) Used in UV inks and low-odor/low-migration print systems for packaging (Industrial Manufacturing) Initiates cure of pigmented UV-curable plastics and adhesives (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
1-Hydroxycyclohexyl phenyl ketone (184)
CAS 947-19-3
Type I alpha-hydroxyketone photoinitiator giving low-yellowing cure of clear UV coatings, lacquers and overprint varnish (Coatings & Construction) Standard initiator for clear UV/UV-LED inks and high-gloss line coatings (Industrial Manufacturing) Cures clear UV-curable adhesives, hardcoats and plastics (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
1-Methylimidazole (NMI)
CAS 616-47-7
Liquid imidazole accelerator/curing catalyst for epoxy resins and a latent epoxy curing agent in one-component formulations Used in anhydride-cured epoxy castings, electrical laminates and adhesives to speed cure Also serves as a catalyst/acid scavenger in polyurethane and silicone systems
Crosslinking / Curing
Synthesis Intermediate
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Specialty Additives
1-octane-1,2-dione 2-(O-benzoyloxime)
CAS 253585-83-0
High-sensitivity Type I oxime-ester photoinitiator for fast cure of pigmented and highly filled UV systems (Coatings & Construction) Workhorse initiator for color-filter resists, black-matrix and photoresist imaging in display/electronics (Industrial Manufacturing) Cures pigmented UV-curable plastics, photoresists and printing-plate resins (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
1-octane-1,2-dione 2-(O-benzoyloxime)
CAS 253585-83-0
A high-sensitivity oxime-ester Type I photoinitiator that fragments under UV to generate radicals very efficiently, even in heavily pigmented or filled systems. It is a workhorse for imaging-grade applications such as color-filter and black-matrix resists in display manufacturing
Crosslinking / Curing
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Amines & Amides
1,2-Diaminocyclohexane (1,2-DACH)
CAS 694-83-7
A vicinal cycloaliphatic diamine used as a chelating and heterocyclic building block. Industry references record its use in the synthesis of nitrogen-heterocyclic derivatives and in corrosion-inhibitor chemistry.
Crosslinking / Curing
pH Adjustment
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Amines & Amides
1,2-Dimethylimidazole (1,2-DMI)
CAS 1739-84-0
Imidazole catalyst for rigid and semi-rigid polyurethane/PIR foam Latent/accelerator catalyst for epoxy curing systems Drives crosslink formation with low odor
Crosslinking / Curing
Synthesis Intermediate
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Amines & Amides
1,3-Bis(aminomethyl)cyclohexane (1,3-BAC)
CAS 2579-20-6
A saturated cyclic diamine used as an epoxy curing agent. Industry references record its use as a curing agent (hardener) for epoxy resins. Supplied as a bulk amine intermediate.
Crosslinking / Curing
Synthesis Intermediate
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Glycols & Polyols
1,4-Butanediol (BDO)
CAS 110-63-4
Short-chain diol chain extender that builds the hard segment in cast PU and TPU elastomers Reacts with isocyanate to raise modulus, hardness and tensile strength Standard chain extender paired with PTMEG/polyester polyols
Crosslinking / Curing
Synthesis Intermediate
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Polymers & Resins
1,4-Butanediol Diglycidyl Ether (BDDGE)
CAS 2425-79-8
A difunctional reactive diluent that thins and flexibilizes epoxy systems. It is added to epoxy resin systems to reduce viscosity and acts as a flexibilizer for aromatic epoxy resins.
Crosslinking / Curing
Viscosity Modification
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Amines & Amides
1,4-Cyclohexanebis(methylamine)
CAS 2549-93-1
Cycloaliphatic diamine curing agent for epoxy coatings and adhesives, giving fast cure with good color stability and weatherability Crosslinks epoxy resins in flooring, can/coil coatings and fiber-reinforced composites Serves as a diamine chain extender in polyamide and polyurethane systems
Crosslinking / Curing
Synthesis Intermediate
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Specialty Additives
2-(Dimethylamino)-2-(4-methylbenzyl)-1-butan-1-one
CAS 119344-86-4
A high-activity alpha-aminoketone Type I photoinitiator used to push cure through dark and heavily pigmented UV formulations. It cleaves under near-UV light to generate radicals, and its efficiency makes it a frequent choice where thicker or more opaque films would otherwise undercure beneath the surface
Crosslinking / Curing
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Amines & Amides
2-{(methyl)amino}ethanol (Trimethylaminoethylethanolamine)
CAS 2212-32-0
Low-odor reactive (isocyanate-incorporable) blowing catalyst for flexible, molded and semi-rigid polyether polyurethane foam Reduces amine emissions/fogging in automotive seating and molded foam because the catalyst is built into the polymer network Balances blow vs gel in slabstock and high-resilience foam systems
Crosslinking / Curing
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Specialty Additives
2-Benzyl-2-(dimethylamino)-1-butan-1-one
CAS 119313-12-1
High-activity Type I alpha-aminoketone photoinitiator for fast through-cure of pigmented and dark UV coatings (Coatings & Construction) Strong cure of black/pigmented UV inks, solder masks and screen inks (Industrial Manufacturing) Cures pigmented UV-curable plastics, adhesives and photoresists (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
2-Benzyl-2-(dimethylamino)-1-butan-1-one
CAS 119313-12-1
An alpha-aminoketone Type I photoinitiator that fragments under UV light to start free-radical cure of acrylate and other unsaturated systems. Its near-UV absorption makes it effective in white and pigmented formulations, where it drives cure down through the film rather than only at the surface
Crosslinking / Curing
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Glycols & Polyols
2-Butoxyethanol (Ethylene Glycol Monobutyl Ether)
CAS 111-76-2
A coupling glycol-ether solvent bridging water- and oil-soluble formulation components. It is widely used as a coalescing and coupling solvent in surface coatings and inks and as the active solvent in household and industrial cleaners, glass cleaners, and metal cleaners.
Solvency
Viscosity Modification
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Specialty Additives
2-Ethyl-4-methylimidazole (2E4MI)
CAS 931-36-2
Liquid imidazole accelerator/curing agent for epoxy resins, offering low-temperature reactivity and long usable life Used in electrical laminates, adhesives and powder coatings as an accelerator for anhydride and dicyandiamide cures Drives fast epoxy homopolymerization at moderate cure temperatures
Crosslinking / Curing
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Specialty Additives
2-Ethylanthraquinone (2-EAQ)
CAS 84-51-5
Type II anthraquinone photoinitiator/sensitizer used with amine synergists for UV cure of coatings (Coatings & Construction) Sensitizer for UV inks and wood/paper overprint systems (Industrial Manufacturing) Sensitizes cure of UV-curable plastics and adhesives (Plastics & Polymers)
Crosslinking / Curing
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Solvents - Oxygenated
2-Ethylhexanol (2-EH)
CAS 104-76-7
The branched octanol behind 2-ethylhexyl ester plasticizers, and a low-volatility process solvent in its own right. Its largest use is as a feedstock for plasticizers and other esters; it also serves as a defoamer, wetting agent, low-volatility solvent, and textile-finishing additive.
Solvency
Synthesis Intermediate
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Amines & Amides
2-Ethylhexyl 4-(dimethylamino)benzoate
CAS 21245-02-3
Liquid low-odor tertiary-amine co-initiator for Type II UV cure with reduced migration vs EDB (Coatings & Construction) Amine synergist of choice in low-migration UV/UV-LED packaging inks (Industrial Manufacturing) Accelerates oxygen-inhibited surface cure of UV adhesives and plastics (Plastics & Polymers)
Crosslinking / Curing
UV Protection
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Esters
2-Ethylhexyl Acrylate (2-EHA)
CAS 103-11-7
The soft-monomer workhorse for pressure-sensitive adhesives and latex binders. It is used to make pressure-sensitive adhesives, water-based paints and coatings, printing inks, and paper and textile treatments, and it copolymerizes with vinyl acetate and vinyl chloride.
Film Formation
Synthesis Intermediate
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Phosphate Esters & Derivatives
2-Ethylhexyl Diphenyl Phosphate (DPOP)
CAS 1241-94-7
Low-temperature flame retardant plasticizer for flexible PVC and vinyl Fire-resistant flexibilizer for wire/cable jacketing and coated fabrics Mixed alkyl-aryl phosphate balancing flame resistance and cold-flex
Flame Retardancy
Plasticizing
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Specialty Additives
2-Ethylimidazole (2EI)
CAS 1072-62-4
Imidazole accelerator/curing agent for epoxy systems used in laminates, coatings and adhesives Acts as a latent catalyst for one-component epoxy cures and as a co-accelerator with anhydride/dicyandiamide hardeners Promotes high-Tg, heat-resistant epoxy networks
Crosslinking / Curing
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Specialty Additives
2-Hydroxy-2-methyl-1-phenylpropan-1-one (1173)
CAS 7473-98-5
Liquid Type I alpha-hydroxyketone photoinitiator for fast, low-yellowing surface cure of clear UV coatings (Coatings & Construction) Highly compatible liquid for UV/UV-LED clear inks and overprint varnishes (Industrial Manufacturing) Cures clear UV-curable adhesives and plastics; common blend partner with TPO (Plastics & Polymers)
Crosslinking / Curing
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Esters
2-Hydroxyethyl Acrylate (HEA)
CAS 818-61-1
A hydroxyl-functional acrylic monomer that builds crosslinkable thermoset coatings. It is used as a comonomer in thermosetting acrylic resins, where its hydroxyl group provides crosslinking sites with isocyanates, melamine, and epoxies.
Film Formation
Synthesis Intermediate
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Glycols & Polyols
2-Hydroxyethyl Methacrylate (HEMA)
CAS 868-77-9
A reactive hydroxyl-bearing monomer supplied for radiation-cure, adhesive, and hydrogel polymer systems. It is used in UV-curable inks, coatings and adhesives, acrylic resins, dental materials, and as a comonomer in hydrogels and contact-lens polymers.
Moisture Control
Solvency
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Specialty Additives
2-Isopropylthioxanthone (ITX)
CAS 5495-84-1
Type II thioxanthone photoinitiator/sensitizer used with amine co-initiators for UV-curing pigmented coatings and inks (Coatings & Construction) Extends absorption to longer UV wavelengths for high-speed UV/UV-LED printing and overprint varnish (Industrial Manufacturing) Sensitizes through-cure of pigmented UV-cure plastics and adhesives (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
2-Methyl-1–2-morpholinopropan-1-one (907)
CAS 71868-10-5
Type I alpha-aminoketone photoinitiator giving strong through-cure of white and pigmented UV coatings (Coatings & Construction) Workhorse for pigmented screen and UV inks where surface-only initiators under-cure (Industrial Manufacturing) Cures pigmented UV-curable plastics, adhesives and solder masks (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
2-Methyl-1-2-morpholinopropan-1-one
CAS 71868-10-5
2-Methyl-1--2-morpholinopropan-1-one (MMMP) is a Type I alpha-aminoketone photoinitiator. Under UV exposure it cleaves to form radicals that start the polymerization of acrylate and other free-radical UV systems, and its absorption profile makes it especially effective at curing white and pigmented films from within
Crosslinking / Curing
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Amines & Amides
2-Methyl-1,4-diazabicyclooctane (2-Methyltriethylenediamine)
CAS 1193-66-4
Strong gelling/balanced bicyclic amine catalyst for rigid and flexible polyurethane foam Methylated DABCO variant offering modified activity vs standard TEDA for reaction-profile tuning Used where a delayed onset relative to neat TEDA is desired
Crosslinking / Curing
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Specialty Additives
2-Methylimidazole (2MI)
CAS 693-98-1
Imidazole accelerator/curing agent for epoxy resins; a standard latent catalyst in one-component epoxy systems Used in electrical laminates, powder coatings and adhesives as an accelerator for dicyandiamide and anhydride cures Yields high-Tg, heat-resistant epoxy networks
Crosslinking / Curing
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Amines & Amides
2-Methylpentamethylenediamine (MPMD)
CAS 15520-10-2
Low-viscosity aliphatic diamine curing agent for epoxy coatings, adhesives and flooring with good handling and pot life Diamine chain extender for polyurethane and polyamide systems Used where a liquid, fast-handling primary-amine hardener is preferred over rigid aromatic amines
Crosslinking / Curing
Synthesis Intermediate
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Amines & Amides
2-Methyltriethylenediamine (2-Methyl-1,4-diazabicyclooctane)
CAS 1193-66-4
A methylated bicyclic tertiary-amine catalyst, structurally the 2-methyl homolog of triethylenediamine (TEDA). The added methyl group shifts the reaction profile, giving a more delayed onset than neat TEDA while retaining strong gelling activity. It is used to tune cure timing in rigid and flexible polyurethane…
Crosslinking / Curing
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Specialty Additives
2-Octyl-2H-isothiazol-3-one (OIT, Octylisothiazolinone)
CAS 26530-20-1
An octyl isothiazolinone supplied as a dry-film and in-can material preservative for industrial coatings and fluids. It is used as a film and in-can preservative in paints, coatings, adhesives, polishes, and metalworking fluids, and in wood and leather preservation.
Biocidal Action
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Specialty Additives
2,2-Diethoxyacetophenone (DEAP)
CAS 6175-45-7
Liquid Type I acetophenone-derivative photoinitiator for cure of clear UV coatings (Coatings & Construction) Liquid initiator for UV inks, varnishes and adhesive primers (Industrial Manufacturing) Cures clear UV-curable adhesives and plastics (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
2,4-Diethylthioxanthone (DETX)
CAS 82799-44-8
Type II diethylthioxanthone sensitizer paired with amine co-initiators for UV-curing pigmented inks and coatings (Coatings & Construction) Long-wavelength absorption improves through-cure and speed in UV/UV-LED printing and electronics (Industrial Manufacturing) Low-odor alternative to ITX for sensitizing pigmented UV-cure plastics and adhesives (Plastics & Polymers)
Crosslinking / Curing
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Specialty Additives
2,4,6-Trichlorophenol (TCP)
CAS 88-06-2
Chlorophenol used as a biocidal/antimicrobial active and wood-preservative intermediate (Coatings & Construction, Industrial Manufacturing) Intermediate for agrochemical and specialty chemical synthesis (Agriculture)
Biocidal Action
Synthesis Intermediate
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Amines & Amides
2,4,6-Tris(dimethylaminomethyl)phenol
CAS 90-72-2
Tertiary-amine accelerator for epoxy cure, widely used to speed amine- and anhydride-cured epoxy systems Used in epoxy coatings, adhesives, castings and composites as a fast accelerator and standalone catalytic curing agent Promotes room-temperature epoxy homopolymerization and shortens gel time
Crosslinking / Curing
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Specialty Additives
2,5-Dimethyl-2,5-Di(tert-butylperoxy)hexane
CAS 78-63-7
Crosslinking / Curing
Synthesis Intermediate
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Phosphate Esters & Derivatives
2,6,7-Trioxa-1-phosphabicyclooctane-4-methanol 1-oxide (PEPA)
CAS 5301-78-0
Phosphorus-rich, char-forming intumescent flame retardant and intermediate Building block for halogen-free flame retardant systems in plastics and coatings Reactive component for fire-resistant textile and polymer finishes
Flame Retardancy
Synthesis Intermediate
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Silanes & Organosilanes
3-(2-Aminoethylamino)propyltrimethoxysilane (DAMO)
CAS 1760-24-3
A diamine alkoxysilane delivering two reactive amine sites for stronger resin-to-mineral coupling than a mono-amino silane. It works as a coupling agent, adhesion promoter, and crosslinker, bonding inorganic substrates to organic resins in fiberglass sizing, adhesives, sealants, foundry resins, and coatings.
Coupling / Adhesion Promotion
Crosslinking / Curing
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Amines & Amides
3-(Diethylamino)propylamine
CAS 104-78-9
Primary+tertiary amine used as a coating catalyst/curing agent for PU and epoxy Reactive amine that both catalyzes and chemically incorporates into the network Used in coatings, adhesives and casting resins
Crosslinking / Curing
Synthesis Intermediate
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Silanes & Organosilanes
3-Aminopropyltriethoxysilane (APTES)
CAS 919-30-2
The reference aminosilane for surface functionalization, hydrolyzing to silanols that anchor amines onto inorganic substrates. It bonds inorganic surfaces such as glass, silica, metals, and mineral fillers to organic polymers, and is widely used to size glass fibers and as an adhesion promoter in adhesives,…
Coupling / Adhesion Promotion
Crosslinking / Curing
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