DMTDA, in the automotive, construction, mining, metal mining, textile, paper, printing industry

Brief Introduction: 

DMTDA is a new type of polyurethane elastomer curing crosslinking agent, equivalent to Ethancure-300. Mainly includes two kinds of isomers, 2,4-isomer and 2,6-isomer (The ratio is about 77~80% / 17~20%).

Compared with MOCA, DMTDA is low viscosity liquid under normal temperature, can be used in low temperature.

The curing speed of DMTDA is much slower than that of DETDA, which can be mixed with DETDA in different proportions, to adjust the curing speed to meet different requirements.

Ingredients:

Equivalent Weight	107
Appearance	Amber Liquid
Odor	Slight Amine
Boiling Point℉(℃)	667(353)(ecomposes)
Density(g/cm3)at 68℉(20℃)	1.21
140℉(60℃)	1.18
212℉(100℃)	1.15
Viscosity,Cps at 68℉(20℃)	690
140℉(60℃)	22
212℉(100℃)	5
Vapor Pressure, mmHg at 65℉(20℃)	0.6
Amine Number,mg KOH/g	536
TDA content(%)	≤1.0%
Moisture	≤0.1%

Processing:

HARTCURE 30, being a liquid at room temperature results in significant processing

advantages, for example,in such operation as transfer, melting down of solids is eliminated. Also, the possibility of freezing-up is no longer a concern during mixing or in meter mixing machines. Additionally, its liquid state permits processing prepolymer at lower temperatures than that of MOCA.

HARTCURE 30 has an equivalent weight of 107 compared to 133.5 for MOCA. This

means that about 20% less by weight is required for a given prepolymer at the same stoichiometry.

Prepolymer (NCO 4.1)	100Pts	100Pts
MOCA @ 95% Theory	12.4Pts	—
HARTCURE 30(DMTDA) @ 95% Theory	—	9.9Pts
Formula Weight	112.4Pts	109.9Pts

Physical properties of prepolymer cured with HARTCURE 30(DMTDA) curative

The specific gravity of HARTCURE 30(DMTDA) is about 1.20g/cc at recommended use temperatures of 70-90℉(21-33℃), whereas the specific gravity of molten MOCA at its use temperature of 240℉(116℃) is 1.26. This means that weight delivery by volumetric pumps is comparable for thetwo materials and therefore if no alterations for meter-mixing machines, we must change the formula weight of MOCA into that of HARTCURE 30.

Our Factory:

Johnson Fine Chemical Co., Ltd. former Farn Shinn Enterprise Co., Ltd. which was established in 1975, is a corporate company of Sea Chief Group. At the beginning, Farn Shinn was the stock agent of Bayer, Germany for Desmodur RF and N-75. Besides, it is also the agent of Du Pont, U.S.A. for Adiprene L-167, L-100 and curing agent for MOCA in Taiwan. In 1997, Farn Shinn Enterprise Co., Ltd. was formally renamed as Johnson Fine Chemical Co., Ltd.Johnson devotes to develop more sophisticated special chemicals including unique material such as monofunctional isocyanate, 1,5-diisocyanate-naphthatene, dimethylthio diamino thouene and etc..

Johnson successfully kept their part of the market in this field, and was approved by ISO9001: 2000. Besides, they cooperated technically with world wide companies in the development of new products, improvement of old-fashioned techniques, and technical support of existing customers. Meanwhile, with quick information feedback system, Johnson further enhanced products quality and expanded products' range of applications. Also, Johnson has built a complete system covering technological development, field application and product promotion. The quality of products are world class. 

Packing & Shipping:

Our Certifications：

 

FAQ：

1.What’s your payment terms?
T/T or L/C.
2. What's your delivery time?
 Usually sample time: 1-7days, ,mass goods delivery time: 30-35days
3. How about the packing?
 Usually we provide the packing as 25 kg fiber drum, bag or carton for solid or powder products; 175KG, 180KG,190KG,200KG steel drum and plastic drum for liquid products. Of course, we can arrange according to your special requirements on them.
4. How about the validity of the products?
 Different products have different shelf life.
5. What documents you provide? 
 Usually, we provide commercial Invoice, Packing List, Bill of loading, COA. If your markets have any special requirements, let us know.

Contact Us：

DMTDA is a new type of polyurethane elastomer curing crosslinking agent, equivalent to Ethancure-300. Mainly includes two kinds of isomers, 2,4-isomer and 2,6-isomer ( The ratio is about 77~80% / 17~20%), compared with MOCA, it is low viscosity liquid under normal temperature, can be used in low temperature. DMTDA is a low toxicity and environmental protection type liquid diamine chain extender, mainly used for polyurethane elastomer, RIM (reaction injection molding), SPUA (spray polyureaelastomer) and the adhesives. At the same time, it may be used as curing agent for epoxy resin, it has been widely used in polyurethane rollers, medical science, stamping and so on. In addition, it has a wide range of applications in the automobile, construction, mining, metal mining, textile, papermaking, printing. The curing speed of DMTDA is much slower than that of DETDA, which can be mixed with DETDA in different proportions, to adjust the curing speed to meet different requirements.

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