Dibasic acid ester DBE
Commonly known as MDBE, methyl nylonate is an environmentally friendly solvent with a high boiling point. It is named DBE by DuPont, DME by Solutia, and NME in China.
DBE is a mixture of three divalent acid esters, commonly known as methyl nylon, which is composed of dimethyl succinate (succinic acid) CH3OOC (CH2) 2COOCH3, dimethyl glutarate CH3OOC (CH2) 3COOCH3 and The combination of dimethyl diacid CH3OOC(CH2)4COOCH3 three good environmental solvents, it is precisely because of this unique composition that DBE becomes a non-toxic, colorless and transparent liquid with a light ester aroma and super Strong dissolving ability, it is a biodegradable environmentally friendly high boiling point solvent, widely used in automotive coatings, color steel plate coatings, can coatings, enameled wire and household appliances, furniture and wood coatings and other industries.
he DBE product series include pure succinic acid, glutaric acid and adipic acid dimethyl esters and their mixtures in different proportions. During production, methanol is first reacted with the mixed dibasic acid, and then rectified and separated into different product. Precise esterification process and separation process control make the water content, methanol content, color and acid value in DBE extremely low.
Chemical properties:
DBE products are very stable under normal temperature and humidity. They have the characteristics of typical ester functional groups, including saponification and hydrolysis reactions. The transesterification reaction is mainly used to convert ester products into useful plasticizers and other polyesters. product.
With the emphasis on environmental protection, safety and health, more and more laws and regulations stipulate or recommend not to use harmful solvents, such as: chlorinated solvents (trichloroethane, methyl chloride, etc.), glycol ethers, ethanol ethers Acetate solvents, etc. And DBE products are the best substitutes for these solvents, and DBE products can also fully meet the increasing demand for VOC.
characteristics
1. Low toxicity, low odor, low water content, safe use, and not classified as hazardous substances in laws and regulations.
2. Excellent solubility, good compatibility with polyurethane resin, acrylic resin, polyester resin, alkyd resin, epoxy resin, etc.
3. It can increase the flatness and adhesion of the paint, and reduce defects such as pinholes, fish eyes, and craters.
4. High boiling point and long distillation range can help adjust the volatilization rate of the entire solvent system.
Dibasic acid ester MDBE
5. Promote improvement of flexibility and adhesion.
6. It has good leveling properties and improves gloss.
7. In some industrial coatings, it can improve the hiding power of pigments.
8. Good stability, natural storage will not produce oxidation and decomposition.
9. Clean combustion steam, high combustion heat value.
Alternative solvents: It can replace isophorone, cyclohexanone and various high boiling point ether solvents with high toxicity and irritating smell.