Home > Products > CYTOP > Technical information
CYTOP amorphous fluoropolymer

 Technical information:

Cytop is an innovation in the field of fluoropolymers. It has the same excellent chemical, thermal, electrical and surface properties as conventional fluoropolymers. In addition, its noticeable characteristics are high optical transparency and good solubility in specific fluorinated solvent due to amorphous morphology.

Cytop is the trademark registered in Japan.


 Characteristics:

High Transmittance
DUV 200nm - NIR 2.0 micron meter > 95%
Low Refractive Index,
Minimal Colour Observation

nD:1.34, Abbe's #: 90
Electrical Properties
Dielectric Constant:2.1,
Volume Resistivity>1017 ohm meter
Thin Film Coating
Soluble in perfluoro solvent:
Film Thickness beyond 0.1micron meter


Fluoropolymer Category


Fluoropolymer Perfluoropolymer
Crystalline
ETFE
PVDF
PVF
ECTFE
PTFE
PFA
FEP
Amorphous
Resins Lumiflon (1) Cytop (1)
Rubber Aflas (1)
Vitom (2)
Fluorel (3)
Kalrez (2)

(1)-(3) Registered Trademark: (1)Asahi Glass ,(2)DuPont, (3)3M


 CYTOP applications:

Electronics Sector: Inter-level Dielectric Layer for Semiconductors,
   Pellicle (Photo mask Cover)

Optical Sector: Optical Film, Anti-Reflection Coating

Graded-Index Optical fiber: LucinaTM for Gigabit Communications

Others: Water & Oil Repellent, Transparent Anti-corrosion


(1) Optical Properties

CYTOP PTFE PFA PMMA Remarks
Refractive Index 1.34 1.35 1.35 1.49 Abbe's Refractometer
Transmittance (%) 95 Opaque Opaque 93 Visible Region,200 micron meter
Abbe's Number 90 -- -- 55 Abbe's Refractometor


UV-Vis. Transmittance





(2) Physical Properties

CYTOP PTFE PFA PMMA Remarks
Glass Transition
Temperature (°C)
108 (130) (75) 105-120 DSC
Melting Point (°C) not observed 327 310 iso 160
syn 200
DSC
Density (g/cm3) 2.03 2.14-2.20 2.12-2.17 1.19-1.20 25°C
Contact Angle of
Water (degree)
110 114 115 80 25°C
Critical Surface
Tension (dyn/cm)
19 18 18 39 25°C
Water Absorptivity (%) <0.01 <0.01 <0.01 0.3 60°C
in water
Durometer Hardness HDD78 HDD55 HDD58-60 HDD92 ASTM D2240
Linear Expansion
Coefficient(cm/cm/°C)
7.4*10-5 1.0*10-4 1.3*10-4 8.0*10-5 TMA
(40-100°C)


Contents

Gas Permeation Comparison of Oxygen
Gas Permeability
(cm3cm/cm2s Pa)

Product

Oxygen Permeation
(cm3cm/cm2s Pa)
He 8.9*10-12 CYTOP 4.2*10-13
O2 4.2*10-13 PTFE 3.2*10-13
N2 1.0*10-13 PE 2.2*10-13
Saran 4.0*10-16


Moisture Permeation
Product Permeability
(cm3cm/cm2s Pa)
CYTOP 1.1*10-12
PI 4.3*10-11
Silicon Rubber 3.2*10-9
HDPE 9.0*10-13
Saran 7.0*10-13


(3) Chemical Resistance

Chemicals Weight Change(%) Appearance Remarks
Acids
12N HCl
99% H2SO4
50% HF
0.0
0.0
0.0
No change
" "
" "
60°C *1 week
60°C *1 week
R.T.*1 week
Alkalis
10% NaOH
44% NaOH

0.0
0.0

No Change
" "

60°C *1 week
60°C *1 week
Organic Solvents
Hexane
Benzene
Acetone
Methylethylketone
Trichloro Ethylene
Carbon Tetrachloride

0.0
0.0
0.0
0.0
0.0
0.0

No Change
" "
" "
" "
" "
" "

R.T.*1 week
R.T.*1 week
R.T.*1 week
R.T.*1 week
R.T.*1 week
R.T.*1 week


Before use of this product, we urge the careful reading of the appropriate Material Safety Data Sheet (MSDS). Technical information brochures are available for some products. For the safe use of the product, one must abide by the use method and the purposes described in the relevant brochure and MSDS. Please note that the brochure and MSDS are based on the latest information and data available, but additional and/or corrections may be made, from time to time, without notice when new data becomes available and/or regulations are changed. Feel free to contact us directly and/or the selling agency if you have any questions.

Top of page
Fluon® PTFE
Fluon® PFA
Fluon® ETFE
Aflas® Fluoroelastomers
Fluon® Colour Concentrates
Fluon® ETFE Film
Asahi Guard
Lumiflon
Silica
Solvents
Cytop
Fine Chemicals