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| Name of the substance |
：1,4-cyclohexanedimethanol diglycidyl ether |
| CAS No |
：14228-73-0 |
＜total chlorine＞
＜50ppm
CDMDG has an alicyclic structure, it has excellent properties such as hydrophobicity, low water absorption and low dielectric properties. Also, because of its low molecular weight, it is liquid at room temperature and has good affinity with various epoxies.
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Showa’s |
Others |
Analytical method |
| Color |
Clear |
Light yellow |
Appearance |
Color
difference |
L |
99.6 |
99.9 |
Color-difference meter |
| a |
-0.09 |
-0.53 |
| b |
0.7 |
2.14 |
| Viscosity(mPa･s/25℃) |
30 |
37 |
E-type viscometer |
| Epoxy equiv.(g/eq) |
136 |
135 |
Titration |
| Total Cl (ppm) |
4.8 |
503 |
Combustion
/Ion Chromatogram |
| Purity (％) |
91.6* |
89.7* |
GC
*Allyl 8%
*Chloride, polymer10% |
■TOXICOLOGICAL INFORMATION
Acute toxicity (Oral)
Rat, LD50 : 300-2000 ppm (SHOWA DENKO test report）
Germ cell mutagenicity
Positive in Ames test using Salmonella typhimurium and Escherichia coli. (SHOWA DENKO test report)
■Chemical regulation
・Japan：＜1t/y
・EU（EINECS、REACH）、USA（TSCA）、CANADA（DSL）、KOREA、CHINA |
|
(1) |
Showa |
Other |
Showa |
Other |
Showa |
Other |
| Bis-A-Epoxy |
100 |
80 |
50 |
0 |
| CDMDG |
0 |
20 |
50 |
100 |
| MeHHPA |
87.5 |
90.3 |
98.9 |
110 |
| 2E4MZ |
0.94 |
0.95 |
0.99 |
1.05 |
| Silica |
|
|
|
211 |
| Tg [℃] |
154 |
140 |
143 |
124 |
127 |
94 |
102 |
| CTE |
α1 |
78 |
80 |
84 |
81 |
79 |
86 |
86 |
| α2 |
150 |
180 |
180 |
180 |
180 |
180 |
170 |
| Bending strength [MPa] |
138 |
119 |
130 |
108 |
119 |
90 |
93 |
| Elastic modulus [GPa] |
2.76 |
2.67 |
2.64 |
2.56 |
2.46 |
2.37 |
2.23 |
| Water absorption |
|
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0.52 |
0.86 |
It can be used in the same way as existing products and has the same performance.
Low water absorption compared to others. |
＜Curing condition＞
Bis-A-Epoxy : Epoxy equiv.=173g/eq Viscosity=4450mPa･s
Silica filler : Average Diameter=2.2μm
Heating : 100℃,1hr＋120℃,1hr＋180℃,2hr
Water absorption test : 130℃‐100%RH, 100hr |
＜Test condition＞
Temp: 85℃, Humidity : 85％RH
Voltage : 100V
L/S = 50/50, Pitch width = 100μm |
| High electrical reliability by halogen-free |
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※The information contained herein is based upon data considered true and accurate.
However, SHOWA DENKO K.K. accepts no responsibility or risk which may result from the handling and use of products or for infringement of any patent. |
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