About Photo Acid Generators
- What is the difference between a sulfonium salt and an iodonium salt?
A sulfonium salt type exhibits good storage stability but is less effective with sensitizers. An iodonium salt has relatively poor storage stability, but is expected to be effective with sensitizers.
- Please tell me the general amount of addition.
Although it depends on the application and film thickness, it is generally about 0.5 to 1 wt%.
- How should the anion be selected?
If you need a strong acid for the purpose of polymerization, we recommend our special phosphate anion, borate anion, and FG anion.
Please contact us if you need organic acid anions used for resist applications. Radar charts of various anions are as follows.
- How can I suppress the coloring of the cured product?
Please consider CPI-101A (antimony compound) and CPI-310FG (non-antimony compound). It is also effective to cut short wavelengths with strong energy and reduce the exposure of the light source.
About Thermal Base Generators
- What is the difference between DBU and DBN?
It is different in the boiling point and pKa. Please select according to your purpose.
- Are there any products that add transparency to the epoxy cured product?
Please consider U-CAT 18X, U-CAT5002, U-CAT5003.
- How can I prevent the urethane cured product from being colored?
- Since amine is basically the coloring source, we have no such product.
- I would like to achieve low temperature curing.
- If you don't care about pot life such as 2 liquid system, please consider DBU. If you are concerned about pot life, please consider U-CAT SA1 and U-CAT SA102.
- Please tell me the products that are compatible with amine-based curing agents.
- We have a variety of amine-based catalysts, but they can not promote amine-based curing agents.
