DBE Dibasic Ester (an environmental friendly solvent with highboiling point)

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I Chemical formula and molecular weight
? Chemical formula: CH3OOC(CH2)nCOOCH3 n=2,3,4
? Molecular weight: 159 (average value)
? CAS No.: 95481-62-2

II Properties and application
? This product has extra-strong solvency, and is a biodegradableenvironmental friendly solvent with high boiling point. Dupontnamed it DBE while Solutia named it DME; it is a mixture of threekinds of solvents and is also known as dibasic ester (commonlycalled as Dimethyl nylon acid).
? The main components of this product are dimethyl succinateCH3OOC(CH2)2COOCH3 15-25%, dimethyl glutarate CH3OOC(CH2)3COOCH355-65% , and dimethyl adipate CH3OOC(CH2)4COOCH3 10-15%. Theproportion of each component is adjustable.
? Non-toxic, colorless, transparent liquid with slight odour,b.p.196-225?, m.p.-20?, refractive index 1.4220 (23?), density1.082 (23?), and flash point 100?.
? It is widely used in many different industries, such as: coilcoatings, stoving varnish, tin/container coating, automobilecoating, varnished wire coating, furniture coating and water-basedpaint, printing ink industry, resin industry, intermediate fororganic synthesis, industrial cleaning machines and so on.

III Quality standard
Specification Index
Appearance colorless, transparent liquid
Ester content , % ? 99.0
Water content, % ? 0.1
Methyl alcohol, % ? 0.2
Color(Pt-Co), code No. ? 20
Acid value, mgKOH/g ? 0.30

IV Package and storage
? Net weight 50 kg/plastic drum, 220kg/iron/plastic drum,1200kg/IBC drum and bulk. Transportation according to normal liquidfreight transportation restrictions.
? Stored in a dry, cool and ventilated place. Avoid violentcollision and rain during handling and shipping. No specialcautions in storage and can be stored in ordinary vessels. Nocorrosivity, no photochemical reactions, better to store in darkplace.
? Non-harmful substance, low flammability, but can be ignited underexcessive heat, flame or oxidizing agents.

Distinguished properties:
1. Non-toxic, slight odour, low water content; safety in use,non-hazardous substance.
2. Good stability, will not oxidize or resolve under normal storageconditions. It volatilizes very slowly under normal temperature,and the volatilization rate increases as temperature rises.
3. High boiling point and wide boiling range help to adjust thevolatilization rate of the whole solvent system.
4. It has the property of high flash point and low vapour pressure.It has high combustion heat value; if being used as fuel, thecombustion heat could reach 9000 BTU per pound.
5. DBE has good levelling property and can increase the gloss ofcoatings. If combined with titanium dioxide could increase thecovering power, toughness and adhesion of the paint coating, andreduce defects such as pinholes, pearl eyes and volcaniccraters.
6. Has extra-strong solvency and could be mixed with most of theorganic solvents. Has favorable intermiscibility with polyurethaneresins, acrylic resins, polyester resins, alkyd resins, epoxyresins and so on.

DBE could replace the solvents such as:
DBE could replace isophorone;
DBE could replace cyclohexanone;
DBE could replace ethylene glycol monoethyl ether acetate(CAC);
DBE could replace diacetone alcohol;
DBE could replace ethylene glycol monobutyl ether;
DBE could replace solvents such as cresol;
DBE could replace propylene glycol ether series solvents.

Main applications:
It is widely used in many different industries, such as: coilcoatings, stoving varnish, metal decorating coating, automobilecoating, varnished wire coating, carpentry coating and water-basedpaint, printing ink industry, resin industry, intermediate fororganic synthesis, industrial cleaning, paint remover, adhesive ofcastings and so on..
1. Coil coating DBE can help to balance the volatilizing speed ofthe whole process and avoid the paint film popping or overbakingdefects due to over-speed volatilization. DBE can endow the filmwith a smooth appearance, better toughness and post-deformability,and can also enhance the hiding power of the paint.
2. Stoving varnish industry DBE has particular volatility; whentemperature increases, the volatilizing speed increases faster thanthat of other solvents, that is: volatilize slowly in the firsthalf phase, and fast in the second phase, which benefits to thedrying process. The solvent volatilization curve goes moresmoothly, solvent volatilizes more equally, and is helpful toimprove the levelling and gloss, and eliminate surface defects.
3. metal decorating coating DBE could effectively replaceisophorone and propylene glycol ether series solvents used in tinsand container paint. The high solvency and low volatilizing ratehelps the paint to gain better levelling, flexibility,adhesive.

DBE paint solvent (Dibasicester),equal to Invista DBE-1