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Photoinitiators

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Photoinitiator generates free radicals or cations when exposed to ultraviolet or visible light, initiating photopolymerization. It is widely used in UV coatings, UV inks, light‑curing adhesives, and photosensitive materials for 3D printing.


Product features :

- Rapid curing : Enables full curing within seconds, significantly improving production efficiency.
- Low‑temperature curing : Suitable for heat‑sensitive substrates such as plastics, films, and leather.
- High reaction efficiency : Provides excellent hardness, abrasion resistance, and adhesion after curing.
- High transparency : Does not affect coating appearance, making it ideal for optical and transparent products.
- Compatible with multiple resin systems : Applicable to UV‑PU, UV‑acrylic, epoxy acrylate, and other UV‑curable formulations.

    This combination does not exist.

    Photoinitiators


    Photoinitiators

    Photoinitiator is a chemical compound that breaks down into free radicals when exposed to light. In industries, photoinitiators are widely used to promote polymerization. In addition to the special formulation of photoinitiator and the adsorption of UV from high-intensity UV light curing equipment, the resin will produce free radicals or ions, which will lead to polymerization, crosslinking and grafting reactions. Resins (UV coatings, inks, adhesives, etc.) can be transferred from liquid to solids in seconds.


    ProductFormulaAppearancePurity
    (%)    		M.P.
    (℃)    		Volatile
    (%)    		Max.abs. band
    (nm)

    SB-PI 701
    (EAB)

    C21H28N2O

    Light yellow to light green yellow solid powder

    ≧99%

    92-98°C

    ≦0.5%

    248nm
    376nm

    SB-PI 702
    (BCIM)

    C42H28CI2O4

    Yellow crystalline solid

    ≧99%

    195-205°C

    ≦0.5%

    263nm

    SB-PI 703
    (1173)

    C10H12O2

    Colorless to light yellow liquid

    ≧99%

    -

    -

    260nm
    360nm

    SB-PI 704
    (EDB)

    C11H15NO2

    White to light yellow/white solid powder

    ≧99%

    62-65°C

    ≦0.5%

    310nm

    SB-PI 712
    (MBP)

    C14H12O

    White powder crystal

    ≧99%

    55-57°C

    ≦0.2%

    SB-PI 714
    (184)

    C13H16O2

    White solid powder

    ≧99%

    46-49°C

    ≦0.5%

    244nm
    330nm

    SB-PI 718
    (TPO)

    C22H21PO2

    Yellow solid powder

    ≧99%

    87-93°C

    ≦0.5%

    260nm
    360nm

    SB-PI 718-L

    C18H21O3P

    Clear yellow liquid

    ≧94.5%

    -

    -

    SB-PI 719
    (819)

    C26H27O3P

    Yellow solid powder

    ≧98%

    127-133°C

    ≦0.2%

    295nm
    370nm

    SB-PI 751
    (BDK)

    C16H16O3

    White crystalline solid

    ≧99%

    63-67°C

    ≦0.2%

    250nm
    340nm

    SB-PI 769
    (369)

    C23H30N2O2

    Light yellow solid powder

    ≧98%

    110-119°C

    ≦0.3%

    320nm

    SB-PI 777
    (I-907)

    C15H21O2NS

    White to beige solid powder

    ≧99%

    72-75°C

    ≦0.25%

    305nm

    SB-PI 788
    (ITX)

    C16H14OS

    Light yellow solid powder

    >98%

    74-76°C

    ≦0.5%

    260nm
    380nm

    SB-PI 794
    (784)

    C30H22F4N2Ti

    Yellow to orange powder

    ≧98%

    160-170°C

    ≦0.5%

    488nm
    532nm

    SB-PI 799
    (DETX)

    C17H16OS

    Light yellow solid powder

    ≧98%

    70-75°C

    ≦0.5%

    257mm
    382mm

    ProductGeneral PropertiesApplication
    SB-PI 701
    (EAB)    		Norrish Type II and Amine Synergist
    		For thick-section, dark UV printing inks (frequently formulated with SB-PI 777 or SB-PI 769). Also, can be utilized as a photosensitizer in photoresist applications.
    SB-PI 702
    (BCIM)    		Norrish Type I
    		For PCB dry film, photoresist, printing plates.
    SB-PI 703
    (1173)    		Norrish Type I
    		Excellent abrasion and scratch resistance. For wood varnishes, flooring coatings, paper overprint varnishes, and UV-curable adhesives.
    SB-PI 704
    (EDB)    		Amine Synergist, pairing with Norrish Type II 
    (SB-PI 788, SB-PI 799)
    		For UV printing inks, wood varnishes, paper overprint varnishes, and metal coatings.
    SB-PI 712
    (MBP)    		 Norrish Type II, pairing with amine synergist (SB-PI 704) For wood varnishes, UV offset/ screen/ flexo printing,UV-curable adhesives.
    SB-PI 714
    (184)    		Norrish Type I
    		For wood varnishes, flooring coatings, paper overprint varnish, UV-curable adhesives.
    SB-PI 718
    (TPO)    		Norrish Type I
    		For thick-section, highly transparent, or white UV-curable systems.
    SB-PI 718-L
    (TPO-L)
    		Norrish Type I
    		Liquid at room temperature. For thick-section, highly transparent, or white UV systems, and 3D printing.
    SB-PI 719
    (819)    		Norrish Type I
    		For thick-section, highly transparent, or colored UV systems, UV printing inks, wood varnishes, paper overprint varnish, metal lacquers, and 3D printing.
    SB-PI 751
    (BDK)    		Norrish Type I
    		Rapid curing. For thick-section and high-transparency systems, wood varnishes, dry film photoresists, and solder mask inks.
    SB-PI 769
    (369)    		Norrish Type I
    		For colored or dark UV-curable systems, including UV printing inks, general printing, and 3D printing.
    SB-PI 777
    (I-907)    		Norrish Type I
    		For colored UV-curable systems, frequently formulated with Norrish Type II, SB-PI 788 or SB-PI 799 to enhance photosensitivity. Applied in photoresists or solder masks for the electronics industry.
    SB-PI 788
    (ITX)    		Norrish Type II, pairing with amine synergist (SB-PI 704)
    		For thick-section, colored or dark UV printing inks, and dark coatings (frequently formulated with SB-PI 777 to enhance photosensitivity).
    SB-PI 794
    (784)    		Visible Light System
    		For thick-section (>70um), transparent or dark UV-curable systems: optical coatings, optical encapsulants, photoresists, 3D printing, printing plates, and holography.
    SB-PI 799
    (DETX)    		Norrish Type II, pairing with amine synergist (SB-PI 704)
    		For thick-section, colored or dark UV printing inks, and dark coatings (frequently formulated with SB-PI 777 to enhance photosensitivity).