Product Description

Dibasic acid ester, also known as DBE, is a mixture of dimethyl esters of succinic acid, glutaric acid and adipic acid. Its main components are dimethyl succinate CH3OOC(CH2)2COOCH3 and dimethyl glutarate CH3OOC( CH2)3COOCH3, dimethyl adipate CH3OOC(CH2)4COOCH3. It is a non-toxic, colorless and transparent liquid with a slight aromatic odor. It is a biodegradable and environmentally friendly high boiling point solvent. Its distinctive features are slight odor and low vapor pressure. It has a high boiling point, strong solubility, and a very uniform evaporation rate during the entire coating drying process. This feature is beneficial to the coating to obtain better leveling and gloss, and eliminate surface defects such as fogging, pinholes, and shrinkage cavities. It is widely used in automotive coatings, coil coatings, can coatings, electrical appliances and metal furniture coatings; as a leveling additive for light wood coatings and as a film-forming additive for latex coatings; in the coating or ink industry, it can replace highly toxic and irritating chemicals. Isophorone, cyclohexanone and various high boiling point ether solvents.

Product Features

In some industrial coatings, the pigment has better hiding power; it has a high boiling point and a long distillation range, which can help adjust the emission rate of the entire solvent series.

The volatilization rate is slow at room temperature, and as the temperature rises, the volatilization rate accelerates.

Excellent solubility, good compatibility with polyurethane resin, acrylic resin, polyester resin, alkyd resin, epoxy resin, etc.; has good leveling properties, which can improve the gloss of the product and improve the hiding of pigments. Strength, increase the flexibility and adhesion of the paint film, and reduce defects such as orange peel, pinholes, and fish eyes.

Miscible with most organic solutes, easy to adjust the formula.

It has good stability and will not oxidize or decompose during natural storage.

It has the properties of high flash point and low vapor pressure, low toxicity, low odor, low water content, safe to use, and is not a hazardous substance in regulations; good stability, no oxidation and decomposition will occur during natural storage; clean The combustion steam has a high combustion heat value (BTU).

Mixed dicarboxylic acid esters

Mixed dibasic acid esters can be used as intermediates in organic synthesis. Polyester and other polymers can be produced by transesterification reaction and catalytic polycondensation reaction, and are also raw materials for the production of a series of chemical products such as medicines, pesticides, and initiators. Mixed dibasic acid ester products are very stable at normal temperatures and humidity and have typical ester functional group characteristics, including saponification and hydrolysis reactions. Transesterification reactions are mainly used to convert ester products into useful plasticizers and Other polyester products. High boiling point solvent mixed dibasic acid esters (called DBE by DuPont) are dibasic acid ester mixtures, also known as dibasic acid esters.It is a low-toxic, low-odor, biodegradable, environmentally friendly, high-boiling-point solvent (universal solvent for coatings). It has been widely used in the paint, coating, ink industry and other fields. Products include dimethyl succinate, dimethyl glutarate, dimethyl adipate and their mixtures in different proportions. During production, methanol is first reacted with the mixed dibasic acid, and then the product is separated and extracted by water washing and distillation. Special technology, reasonable operation control, strict esterification process and separation process make the moisture content, methanol content, color and acid value in the mixed dibasic acid esters extremely low.

Wood coating dibasic acid ester (referred to as DBE or DAME) has a high boiling point, long distillation range, and large buffer range, which can help adjust the volatilization speed, improve smoothness, and prevent surface defects such as white fog and pinholes. It has good compatibility with conventional solvents and ethanol, acetone, butyl ester, and ethylene glycol chemicalbook alcohol ethers, and has greater flexibility and selectivity in solvent formulation and construction conditions. In terms of environmental protection and safety performance, it will be a good substitute for traditional solvents such as haloalkanes (trichloroethane, methyl chloride, etc.), ketones (cyclohexanone, isophorone), toluene and other solvents.

Choosing the appropriate solvent for coil steel coatings is the key to the formulation of coil steel coatings. High baking temperatures and short furnace residence times require solvents that can take into account the integrity, appearance and curing performance of the paint film. MADE can help maintain a balanced evaporation rate and avoid defects caused by blowouts and over-baking in the paint film caused by excessive evaporation. Dibasic acid esters can be used to replace typical solvents such as isophorone, propylene glycol ethers and other high-boiling point solvents, thereby reducing the environmental pollution of the coating system and increasing the safety of construction.

Automotive paint dibasic acid ester (DAME) can be used in a variety of different automotive coatings and different resin systems. It can be used in mid-coats and topcoats to achieve ideal gloss and smoothness on the surface of the paint film and increase the fullness of the paint film. Spend. It can also be used in acrylic and polyester systems. Leveling and re-leveling will be improved by adding a small amount of MADE wetting to the formulation.

Solvent

Dibasic acid ester (referred to as DBE or DAME) is a high boiling point, low cost, low volatility, excellent solubility, aromatic smell of ester, environmentally friendly, non-toxic, safe to use, and can replace high boiling point products with high toxicity and strong smell. Isophorone and various ether solvents. For different mixtures, the success of DBE or DAME in replacing other solvents can be determined by the Hansen solubility parameter. The solubility of resin depends on different solvents, which is expressed by hydrogen bonds, polar and non-polar interactions. The measurement of these three parameters can indicate whether the solubility of the solvent or mixed solvent is similar, which allows us to Solvents or mixtures of solvents can be selected to achieve the solvency required for a particular resin. This allows users to optimize solvent selection, including cost, toxicity, solubility, compatibility, environmental protection and storage, while maintaining the same overall effect.

Application fields of dibasic acid esters

Enameled wire coating

DBETM is an excellent solvent for coating formulations of polyvinyl butyral, polyvinyl formal, polyurethane, polyester and polyester amide. In polyester and polyester amide systems, it can completely replace cresol. MDBETM can A resin with high solid content and low viscosity is obtained. Its non-corrosive advantage can greatly reduce the difficulties in storage for users.

Paint industry

DBE has special volatility. As the temperature increases, its volatilization rate increases faster than other solvents. That is, it volatilizes slowly in the first half of the volatilization process and volatilizes quickly in the second half. In such a drying process, the solvent volatilizes more quickly. On average, it is helpful to improve smoothness and gloss and eliminate surface defects.

Ink industry

Some inks such as SCREENIK often require high boiling point solvents, such as isophorone (ISOPHORONE), but they are highly toxic and have a strong odor, but DAME can make up for this shortcoming and replace it.

Resin industry

Dibasic acid ester (MDBETM) has low viscosity. On the one hand, it can reduce the viscosity of the resin without reducing the molecular weight or solid content. On the other hand, it can increase the solid content while maintaining the same viscosity. Utilizing this feature, resins with high solid content and low viscosity can be produced.

Industrial cleaning agent

DBE can effectively remove partially cured paint residue from equipment and work areas. Whether used alone or mixed with other solvents, DBE is a good solvent for dissolving polyurethane, acrylic, epoxy, polyester and alkyd esters. It can also remove polyurethane, unsaturated resins and elastomers.

Container/can coating

Dibasic acid ester (MDBETM) can effectively replace isophorone, propylene glycol ether, ethylene glycol ether acetate solvents in can and container coatings. MDBETM’s high solubility and low evaporation rate can make the coating have good Leveling, which improves flexibility, adhesion and other important properties of coatings.