Technical Bulletin No. A00-106-2007
New Japan Chemical Co., Ltd.

Epoxy resin curing agent ofNew Japan Chemical
Epoxy resin curing agent “ RIKACIDTM ” of New Japan Chemical shows theperformance such as superior transparency, heat yellowing resistance, heatresistance, electric insulation and adhesion by heat-curing with epoxy resin.

 Feature of cured epoxy resin using RIKACID TM series

・RIKACIDTM MH-700G

・RIKACIDTM HNA-100

・RIKACIDTM MH-T

・RIKACIDTM MTA-15

Expected uses ： LED sealing agent, Artifical marble, etc.

・RIKACIDTM HH

Expected uses ：Die bond materials, Insulation sealing agent, etc.

・RIKACIDTM MH-700

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Technical Bulletin No. A00-106-2007
New Japan Chemical Co., Ltd.

 Typical properties
Table. 1
RIKACIDTM
HH

RIKACIDTM
MH-700・700G

RIKACIDTM
MH-T

RIKACIDTM
HNA-100

RIKACIDTM
MTA-15White vitreous solid

Colorless liquid

Colorless liquid

Colorless liquid

Brown liquid

Equivalent of acid anhydride

156

164

168

179

181

Viscosity [mPa・s] （25℃）

―60

53

290

2000

34～38

≦-5≦-5≦-5≦-5Appearance

Freezing point [℃]※These values are not guaranteed.

 Typical properties of cured epoxy resin
Table. 2＜Formulation＞ (parts by weight)

HH

MH-700MH-700G

MH-T

HNA-100

MTA-15

Remarks

Bisphenol A epoxy resin

100100100

100

100100Epoxy equivalent = 185

RIKACIDTM HH

84

―

―

―

―

―

RIKACIDTM MH-700

―

89

―

―

―

―

RIKACIDTM MH-700G

―

―

89

―

―

―

RIKACIDTM

MH-T

The equivalent of acidanhydride is derived
from table.

――

―

91

―

―

RIKACIDTM HNA-100

―

―――

97

―

RIKACIDTM MTA-15

―

―――

―

98

Quaternary phosphonium salt

1.0

1.0

1.01.01.0

1.0②②―

230
164

DSC （20℃/min）

Equivalent ratio (acid anhydride group／epoxy group)
Curing condition ※1―

①①

①

①

Measurement
condition＜Epoxy Cured Product＞
Gel time

[sec]

140℃

360

330

330

300

430

Tg

[℃]

―

142

149

149

155

Bending strength

[MPa]

25℃

120

118

118

119

Bending modulus

[GPa]

25℃

2.7

2.6

2.6

2.7

165
134
3.0

16

16

16

16

1×1016121
16[Ω・cm]

25℃

1×10

1×10

1×10

1×10CTE[ppm/K]< Tg56555555

6157> Tg

172

174

174

175

179

180

1×10

Water absorption[wt%]

100℃/1h

0.2

0.1

0.1

0.1

0.1

0.3

Acetone resistance ※2[wt%]

25℃/1week

3.1

8.8

8.8

12.5

7.0

Toluene resistance ※2[wt%]

25℃/1week

0.6

0.5

0.5

0.5

0.5

1.6
0.2

Acid resistance （30% H2SO4 aq.）※2[wt%]

25℃/1week

0.4

0.5

0.5

0.4

0.5

0.6

Alkali resistance （10% NaOH aq.）※2[wt%]

25℃/1week

0.4

0.4

0.4

0.5

0.5

0.6

20℃

1.56

1.55

1.55

1.55

1.55

1.55

150℃×0 h
150℃×120 h
150℃×0 h
150℃×120 h――――

9492927793939379939292
849392
93
8193
9091
6292
90
67
53

150℃×0 h―8588―

47518970

84

150℃×120 h

8873

6274

Refractive index (nD)
700 nm
500 nm
400 nm

※1 Curing condition ① 120℃/1h + 150℃/2h ② 120℃／1h ＋ 170℃／2h※2 Weight growth rate after dipping.

2/5JIS C2105

JIS K6911

2.9

Volume resistivity

Light transmittance [%]Accelerator

1.0

JIS K6911
TMA （5℃/min）

JIS K6911

JIS K7142

3 mm thickness

Technical Bulletin No. A00-106-2007
New Japan Chemical Co., Ltd.

 Heat yellowing resistance of cured epoxy resin
We show light transmittance in wavelength 400nm with an ultraviolet spectrophotometer.
Formulation and the curing condition list it in Table 2.

Light transmittance (λ = 400nm) [%]1008060

HH
MH-700MH-700G

40MH-T
HNA-100

20MTA-15

0020

40

60
80
150℃ Aging time [h]After cured

150℃／120h aging

3/5100120

Technical Bulletin No. A00-106-2007
New Japan Chemical Co., Ltd.

 Heat yellowing resistance of cured epoxy resin

Light transmittance (λ = 400nm) (%)

We change aging temperature from 150℃ to 120℃. We show light transmittance inwavelength 400nm with an ultraviolet spectrophotometer. Formulation and the curingcondition list it in Table 2.
10080
HH60

MH-700MH-700G

40MH-T
HNA-10020

MTA-150020406080100120140120℃ Aging time (h)After cured

120℃／240h aging

4/5160180200220240

Technical Bulletin No. A00-106-2007
New Japan Chemical Co., Ltd.

 Registration situation of law *Table. 3
RIKACIDTM
HH

RIKACIDTM
MH-700・700G

RIKACIDTM
MH-T

RIKACIDTM
HNA-100

RIKACIDTM
MTA-15MITI (Japan)○○○○○

TSCA (USA)○○○-○

REACH (EU)

○

○

○

--ECL (Korea)

○

○

○

--

IECSC (China)

○

○

○

--TCSI (Taiwan)

○

○

○

○

○

○：Registered-：Not registered* Because the registration situation may be changed with law revision, please refer before export.

 Attention points
1) Adequately ventilate room and local place.
2) Use protective gloves and goggles while handling.
3) When adhered to skin and cloths, clean it up.
4) When drop in eyes, clearly wash it with water then take medical examinations.
5) Completely seal a container to prevent from being exposed to water.
Because RIKACIDTM series may be changed by moisture absorption, please avoid humidity asmuch as possible. Especially, at the time of storage of the remained portion, please
completely seals the container and maintains the inside of the container at a dry state
substituted with nitrogen gas , etc.

Inquiry

Please contact us at the following address, if you would like to ask about these Technical Bulletin.
New Japan Chemical Co., Ltd. （http://www.nj-chem.co.jp/en/)
Osaka head office Polymer Materials Marketing ＆ Sales Dept. Marketing ＆ Sales Division
Bingomachi Nomura BLDG., 2-1-8, Bingomachi, Chuo-ku, Osaka 541-0051
TEL. ＋81-(0)6-6203-3962 FAX. ＋81-(0)6-6202-7784
Tokyo office Polymer Materials Marketing ＆ Sales Dept. Marketing ＆ Sales Division
GREEN OAK KAYABACHO., 1-3-3, Sinkawa, Chuo-ku, Tokyo 104-0033
TEL. ＋81-(0)3-5540-8106 FAX. ＋81-(0)-3-3297-1251

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