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CPI-100B(40) / 110B

General-purpose photoacid generator. Mono-body high-purity sulfonium salt type manufactured by our company. Excellent storage stability when a cationically polymerizable resin is blended.

Although it is a non-Sb type because it uses borate anion, it has the same acid strength as the SbF6 anion product and exhibits high cationically polymerizable properties. In addition, the cured product is excellent in low metal corrosiveness.

40% propylene carbonate solution product.

Solvent-free type CPI-110B is also available.

CAS RN® 203573-06-2
M.W. 1050

Physical characteristics / Packing / Development stage

Appearance Thin yellow liquid(CPI-110B:Yellow~White powder)
Packing 20kgCAN(CPI-110B:0.5kg)
Stage Mass
Sample Free:10g


Q&A

What is the absorption wavelength?
The i-line (365 nm) absorbs about 80 [M-1 cm-1] in terms of molar extinction coefficient. There is no absorption in the h-line (405 nm) and g-line (436 nm).
What are the characteristics of the generated acid [HB (C6F5) 4]?
It has high acid strength and reactivity equivalent to HSbF6. In addition, since it is resistant to hydrolysis and does not contain hydrofluoric acid, it is possible to prevent corrosion of surrounding metal parts.
How much should I add?
Add about 0.5 to 1 wt% to the resin, depending on the application and film thickness.
What film thickness is suitable?
Although it depends on the application and the amount of addition, the molar extinction coefficient is small, so even a thick film of 100 μm or more has high light transmittance in the depth direction and can generate acid to the deep part.
On the other hand, in the case of a thin film of about 10 μm, the type with a large molar extinction coefficient (CPI-400 series, etc.) is suitable because the effect of transmittance is small. The CPI-300 series is suitable for medium film thicknesses of about 50 μm.
What should I use as a sensitizer?
It has a high sensitizing effect for anthracenes such as dibutoxyanthracene (DBA).
On the other hand, the sensitizing effect of thioxanthone such as isopropyl thioxanthone (IPTX) is low.