Cytop
An Amorphous Fluoropolymer
Unlike conventional fluoropolymers, CYTOP has an amorphous (non-crystalline) structure. This makes CYTOP exceptionally transparent, with visible light transmission levels greater than 95%.
CYTOP is available in three grades (grades A, M and S) for different applications. It can be dissolved in a special fluorinated solvent and applied using a variety of coating methods. Whatever the application, you will be impressed with CYTOP’s excellent transparency, electrical insulation, water and oil repellency, mold release, chemical resistance and moisture resistance properties.
Bellex International Corporation has extensive experience in the CYTOP business, and is pleased to be able to recommend the right product for each application. Small sample kits are available - please contact us for more details.
What is Cytop®?
CYTOP is an amorphous fluoropolymer with ultra-high light transparency (over 95%).
CYTOP is provided as a polymer solution dissolved with a special fluorinated solvent for thin-film coating.
With 3 grades available, (S-type, A-type and M-type), CYTOP can be used in a variety of applications.
Characteristics
| Transparency and Optical Properties | Over 95% light transmittance through DUV to NIR range. Sometimes referred to as "plastic glass" Refractive index at 1.34, close to water. |
|---|---|
| Electric Insulation | Excellent Low-K (Dielectric Constant) value at 2.0-2.1 and high Dielectric breakdown strength. |
| Water and Oil Repellency | Hydrophobic, like other fluoropolymers. |
| Mold Release | Low surface tension and good Mold Release characteristics |
| Chemical Resistance | Resistant to acids, alkaline and organic solvents. |
| Moisture Proof | Low moisture absorption (> 0.01%) and high impermeability. |
| Thin Coating & Adhesion | Smooth surface for uniform thin coatings. Excellent adhesion and bonding strength even without adhesion promoters or pretreatment. Choose the grade that's right for your application. |
Applications
Its unique and excellent characteristics make CYTOP suitable for a wide range of applications.
| Optical Materials | Optical Fibers, Lucina All-plastic Fiber optics Optical Waveguides Pellicles, Photomasks Covers |
|---|---|
| Display Materials | Anti-reflection, ARCTOP Film Insulation Liquid Lenses, electrowetting |
| Semiconductor Materials | Low-K materials, Overcoats, Interlayer Dielectric Films |
| MEMS, Sensors | Etching Masks Gap Filling Microfluidics |
| High-Performance | Water and Oil Repellents |
| Functional Materials | Moisture Barriers Mold Release Fluid Dynamic Bearings Adhesives |
Grade
| TYPE | Polymer-end Group | Applications |
|---|---|---|
| TYPE A | -COOH carboxyl group |
Plastic coating with or without special primer Metal and Glass coating with silane coupling agent Visible light transparency |
| TYPE M | -CONH ~ SiOR amino-silane coupling agent |
Metal, silicone and glass coating without adhesion promoters. |
| TYPE S | -CF3 Perfluoro group |
Ultra high transparency through DUV to NIR UV resistant Non-adhesion |
| Others | High Filtration Adhesion Grade (NM Series) and others. Please contact us for more details. |
Adhesion Mechanism
Naming of CYTOP Grades
Coating Methods
| Coating Method (Note1) | Spin-Coating | Dip-Coating | Potting |
|---|---|---|---|
| Target Thickness (Note2) | >10um | 0.1-1um | 1 to 20um |
| Shape of Substrate | Wafer, flat board | Board, parts | variable |
| Thickness Control Factors | Polymer Concentration Solution Viscosity Spin Speed |
Polymer Concentration Viscosity Pull-up Speed |
Polymer Concentration Nozzle Shape |
| Thickness Precision | Precise | Precise with Dip-coater | variable |
| CYTOP Grade | CYTOP 800 series Solvent: CT-SOLV 180 |
CYTOP 100E series Solvent: CT-SOLV 100 |
CYTOP 100E series CYTOP 800 series |
Note1: Other coating methods may be applicable. (i.e., precision spray coating).
Note2: Multi-layer coating can be used for thicker coatings.
Technical Data
Additional Information about CYTOP
Related Products
- Lucina: All-Plastic Fiber Optics
- ARCTOP: Anti-reflection film
Remarks
Many types of CYTOP are subject to Japanese Export and Trade Control Laws.
The product may not be given to a third party or re-exported.
CYTOP is also subject to U.S. Export Administration Regulations (EAR).
CYTOP is for industrial applications only. CYTOP may not be used for medical, food or military applications.
Precautions for Handling
When using CYTOP, please comply with MSDS.
CYTOP is the registered trademark of Asahi Glass Co., Ltd. in Japan.
MIHAMA CORPORATION