Best Selling DBM 99.5% Dibutyl maleate Liquid CAS 105-76-0

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Uses and synthesis of Dibutyl maleate Liquid

Dibutyl maleate Liquid Dibutyl maleate liquid Insoluble in water, soluble in ethanol. Dibutyl maleate CAS 105-76-0 is used as an intermediate in organic synthesis, mainly through addition reactions on double bonds. Dibutyl maleate Raw Materials are good anticoagulant for petroleum.

Functions of Dibutyl maleate Liquid

1. Dibutyl maleate Liquid is used as raw material for synthetic resins and coatings, as well as impregnators, dispersants and lubricants in petroleum industry, fabrics, plastics and paper industry
2. Plasticizer. Intermediates of organic synthesis. Gas chromatography fixed liquid, separation and analysis of halides and esters.

Applications of Dibutyl maleate Liquid
‌1. Polymer material industry‌
‌Comonomer‌: Copolymerized with monomers such as styrene, vinyl chloride, and acrylate, used in coatings and resin adhesives;

‌Plasticizer‌: As a reactive plasticizer for polyvinyl chloride (PVC) and methacrylic resin;

‌Crosslinker‌: Used for curing and crosslinking of unsaturated polyester resins.

‌2. Functional additives‌
‌Dispersant/lubricant‌: Used in petroleum, papermaking, textile and plastic industries;

‌Rust-proof additive‌: Used for metal surface treatment;

‌Gas chromatography stationary liquid‌: In the field of analytical chemistry.

‌3. Other special uses‌
‌Pesticide sustained-release agent‌: Prolong the efficacy of pesticides;

‌Pharmaceutical intermediates‌: Participate in drug synthesis;

‌Solvent‌: Used in the preparation of special inks and color photographic emulsions

Production methodprocess of Dibutyl maleate Liquid

Using maleic anhydride and butanol as raw materials, the esterification was catalyzed by sulfuric acid, and the reaction products were neutralized, washed, dealcoholized, distilled and filtered to obtain Dibutyl maleate CAS 105-76-0

‌1. Traditional esterification method (mainstream process)‌
‌Raw materials‌: maleic anhydride (maleic anhydride) and n-butanol.

‌Catalyst‌: sulfuric acid (traditional), p-toluenesulfonic acid (yield 95.6%), solid acid (such as ferric chloride).

‌Steps‌:
Esterification of anhydride and alcohol under catalyst, reflux and water separation (70 minutes);

The reaction solution is neutralized, washed with water, dealcoholized, and purified by distillation.

‌2. Alternative synthesis route‌
‌Butyl formate method‌: reaction with maleic acid, the yield is only 6%;

‌Transesterification method‌: reaction of dimethyl maleate with butanol, a highly active catalyst is required.

‌3. Process optimization‌
The use of p-toluenesulfonic acid can avoid sulfuric acid corrosion of equipment, and the yield is higher;

Raw material consumption quota: maleic anhydride 400kg/t, butanol 820kg/t

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