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Product Information
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Dibasic
Ester, also called NME (the same as DBE,
product of Dupont), is an
environment-friendly high boiling
solvent. It is a mixture of three
dibasic esters. It mainly consists of
dimethyl succinate, dimethyl glutarate
and dimethyl adipate. These constituents
make Dibasic Ester a low toxicity,
biodegradable environment-friendly
solvent, widely used in automobile
paints, pigmented steel palate paints,
can coatings, cable varnish and home
appliances coatings.
Product Features
1. Excellent solvency to all kinds of
resin, especially to polyurethane,
acrylic, polyester, alkyd and epoxy
resin.
2. Significant improvement for flatness
and tightness of baking paint and
decrease of pinhole, fish eye and crater
in application.
3. Effective enhancement to the leveling
and brilliance of coatings
4. Wide range of boiling temperature,
which can adjust the evaporation rate of
solvent system.
5. Low toxicity, odor and water content.
Product Properties
Appearance: clear and colorless liquid
Odor: mild odor
Ester content (%):>99
(methanol +water) content (%):<0.3
Density (20℃):1090kg/m3
Range of distillation (℃):196~225
Surface tension (20℃):35.6
Freezing point (℃): -20
Flash point (℃): 100
Resistivity (MΩ): 0.5
Viscosity (cp.s): 24
Average molecular weight: 159
Acid value (mg KOH/g): <0.3
NME has great application foreground
in the following fields
1. Wood paint
A. Due to its wide range of
distillation, NME serves as an excellent
buffer. Hence, it can provide more
flexibility and selection to solvent
formulation and application environment.
B. NME, with high boiling point, and
wide distillation, helps to adjust the
volatilization rate, improve the flow,
and eliminate the white fog and pinhole.
2. Broil-paint industry
NME has special volatility, with the
hoist of the temperature, the NME will
have more fast volatilization speed than
other solvent, Viz. in the former period
it is slowly, but fast in the rear end,
so that it is patient of more benefit
drying period，more calm solvent
volatilization curve, which is benefit
for cancel the surface bug.
3. Engine oils
Benefits of NME in engine
oils:
A. Volatility: The polarity of NME
molecules causes them to be attracted to
one another and this intermolecular
attraction requires more energy (heat)
for the esters to transfer from a liquid
to a gaseous state. Therefore, at a
given molecular weight or viscosity, the
esters will exhibit a lower vapor
pressure which translates into a higher
flash point and a lower rate of
evaporation for the lubricant. Generally
speaking, the more ester linkages in a
specific ester, the higher its flash
point and the lower its volatility.
B. Lubricity: Polarity also causes NME
molecules to be attracted to positively
charged metal surfaces. As a result, the
molecules tend to line up on the metal
surface creating a film which requires
additional energy (load) to penetrate.
The result is a stronger film which
translates into higher lubricity and
lower energy consumption in lubricant
applications.
C. Detergency/Dispersency: The polar
nature of NME also makes them good
solvents and dispersants. This allows
the esters to solubilize or disperse oil
degradation by-products which might
otherwise be deposited as varnish or
sludge, and translates into cleaner
operation and improved additive
solubility in the final lubricant.
D. Biodegradability: While stable
against oxidative and thermal breakdown,
the ester linkage provides a vulnerable
site for microbes to begin their work of
biodegrading the ester molecule. This
translates into very high
biodegradability rates for ester
lubricants and allows more
environmentally friendly products to be
formulated.
4.Printing ink industry
Some printing ink, such as SCREEN INK,
there are often append the high-boil
solvent, for example the ISOPHORONE，but
it is of great virulence and funk, and
that NME could fetch up the upwards bug,
also replace it.
5.Colophony industry
Firstly, it could debase the colophony
viscidity without need to decrease
molecular weight or content. Secondly,
when in the same viscidity ,it could
increase the proper content, by NME 's
character, we could manufacture the
colophony with high proper content and
low viscidity.
6. Launder solvent, de-paint solvent
Because of dibasic ester 's high
solvency, it could cleanup the oil and
paint film, which is also recyclable.
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