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SHOFREE™ CDMDG
Name of the substance F1,4-cyclohexanedimethanol diglycidyl ether
CAS No F14228-73-0


CDMDG

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.


Property as monomer
Showafs Others Analytical method
Color Clear
Clear
Light yellow
Light yellow
Appearance
Color
difference
L 99.6 99.9 Color-difference meter
a -0.09 -0.53
b 0.7 2.14
Viscosity(mPas/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%
monomer information
TOXICOLOGICAL INFORMATION
Acute toxicity (Oral)
Rat, LD50 : 300-2000 ppm (SHOWA DENKO test reportj

Germ cell mutagenicity
Positive in Ames test using Salmonella typhimurium and Escherichia coli. (SHOWA DENKO test report)

Chemical regulation
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Property of cured resin
(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 1 78 80 84 81 79 86 86
2 150 180 180 180 180 180 170
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 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=4450mPas
Silica filler : Average Diameter=2.2m
Heating : 100,1hr{120,1hr{180,2hr
Water absorption test : 130]100%RH, 100hr
Electrical reliability
Test condition
Test condition
Temp: 85, Humidity : 85RH
Voltage : 100V
L/S = 50/50, @Pitch width = 100m
High electrical reliability by halogen-free
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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