Products Description
DMCBDA is a lipophilic di-anhydride monomer for synthesizing polyimide. By adding two methyl groups to the non-conjugated lipophilic structure, DMCBDA can further increase the spacing of the polyimide molecular chains, improving the transparency, solubility and dielectric properties of the polyimide. It can meet the requirements of photo-oriented films and is widely used in the field of optoelectronic displays.
Products Specification
| Product name | DMCBDA/Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone, tetrahydro-3a,6a-dimethyl- |
| CAS NO | 137820-87-2 |
| ITEM NO | M182 |
| Appearance | White powder |
| Purity | ≥99.5% |
| Metal ions Na/K/Te/0a/Ca/Me/Co/Ni/Sn |
100-300 ppb |
| NMR | 3.71ppm ＜0.002 |
| Package | 100mg/1g/1kg etc. |
| Delivery | 5-8days |
| Storage | room temperature |
| MSDS/COA/TDS | Connect us |
Products Application
New monomers for synthesizing polyimide; mainly applied in fields such as flexible circuit boards, OLED flexible substrates and aerospace materials.
Megma also offers a range of dianhydride monomers:
|
CAS NO. |
Product Name |
Function in CPI |
|
4415-87-6 |
1,2,3,4-Cyclobutanetetracarboxylic dianhydride (CBDA) |
Colorless and transparent, low dielectric constant, the core alicyclic dianhydride for CPI cover window |
|
1107-00-2 |
4,4'-(Hexafluoroisopropylidene)diphthalic anhydride (6FDA) |
Strong electron-withdrawing -CF₃ group effectively suppresses CTC and improves transparency |
|
2754-41-8 |
1,2,4,5-Cyclohexanetetracarboxylic dianhydride (HPMDA) |
For semi-alicyclic CPI, balancing transparency and heat resistance |
FAQ
Q: How to store DMCBDA?
A: Seal tightly, store in cool, dry and dark environment, protect from moisture to avoid hydrolysis.
Q: Could it be used for CPI film of foldable screen?
A: Yes. Its methyl-substituted structure brings low yellowing and high transmittance. Combined with ultra-low metal impurities, it is the preferred monomer for transparent substrates of foldable flexible OLED.
Q: For 5G high-frequency low-dielectric PI substrates, what advantages does DMCBDA have over CBDA?
A: Methyl side groups endow DMCBDA with good dielectric performance and much better film transparency /lower yellowing. CBDA is stronger in heat resistance and mechanical property but poorer in light transmittance.
Q: Could it be used for polyimide materials for chip packaging and substrates?
A: Yes. Ultra-low metal ions reduce ion contamination risk, and good thermal stability meets strict requirements for chip carrier boards and packaging insulating films.
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