Dimethyl Terephthalate
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  • Dimethyl terephthalate (DMT) is an organic compound with the formula C6H4(CO2CH3)2. It is the diester formed from terephthalic acid and methanol. It is a white solid that melts to give a distillable colourless liquid.
  • The other names for DMT are Terephthalic acid methyl ester; Methyl Terephthalate; Dimethyl-p-phthalate; 1,4-Benzene dicarboxylic acid, dimethyl ester;  Di-Me terephthalate; Dimethylester kyseliny tereftalove; Methyl 4-carbomethoxybenzoate; Methyl-p-(methoxycarbonyl)benzoate; Dimethyl 4-phthalate; Dimethyl ester of 1,4-Benzenedicarboxylic acid; Dimethyl-1,4-benzenedicarboxylate.
  • DMT has been produced in a number of ways. Conventionally and still of commercial value is the direct esterification of terephthalic acid. Alternatively, it can be prepared by alternating oxidation and methyl-esterification steps from p-xylene via methylp-toluate.
  • DMT is used in the production of polyesters, including polyethylene terephthalate (PET) and polytrimethylene terephthalate.
  • It is a building block for an assortment of products from X-ray and video films to polyester fibers and electrical capacitors.
  • DMT is an ideal choice for virtually any industrial plastics application. This compound is used as an intermediate of herbicides and a component of paints, ink and adhesives.
  • Dimethyl terephthalate is recovered from polymer mixtures containing polymers of terephthalic acid & glycol & a chloride polymer, by adding base to neutralize the hydrochloric acid formed by the degradation of the chloride polymer.
  • In order to separate ethylene glycol from dimethyl terephthalate is accomplished by
    distillation using methyl benzoate or the methyl ester of p-toulic acid as an azeotropic
    agent.
  • Dimethyl terephthalate(DMT) and purified terephthalic acid are feed stocks for the production of polyester.
 Introduction
  • Dimethyl Terephthalate(DMT).
  • Information about DMT.
  • DMT Toxicity.
  • Properties.
  • DMT Basic Information.
  • DMT Product Sheet.

Raw Materials

  • Methanol.
  • P-xylene.
  • Sulfuric Acid.
  • Terephthalic Acid.

MSDS

  • Dimethyl terephthalate MSDS.
  • Material Safety Sheet of DMT.
  • DMT Molten Safety Data Sheet.
  • Safety Data Sheet of terephthalic acid methyl ester.
  • Dimethyl-4 thalate Safety Sheet.
  • Methyl terephthalate MSDS.

Study

  • Degradation of dimethyl terephthalate.
  • Evaluation of the terbium(3)-sensitized luminescence with benzenepolycarboxylic acids.
  • Transformation of dimethyl terephthalate.
  • Polyesters with enhanced heat resistance.
  • Depolymerization of PET with supercritical methanol for chemical recycling.
  • Micro-Raman characterization of anisotropic dimethyl terephthalate crystallites.
  • Effects of Synthesis conditions on chemical structures, physical properties of co polyesters from DMT.
  • Dimethyl terephthalate catabolism.

Suppliers

  • Suppliers from China.
  • European Suppliers.
  • Indian Suppliers.
  • Suppliers from United States.

Company Profile & Consultants

  • Company from China.
  • Manufacturer from Gujarat.
  • Company from India.
  • Manufacturer from Iran.
  • Consultancy from Germany.
  • Consultants from New york.
  • Consultancy from UK.

Patents

  • Preparation of Dimethyl Terephthalate.
  • Separating and Recovering dimethyl terephthalate & ethylene glycol from polyester waste.
  • Separation of Glycols from DMT.
  • Recovery of DMT from Polymer Mixtures.
  • Purification of Dimethyl Terephthalate.
  • Production of DMT from P-Xylene and Methanol.
  • Polyols from scrap polyethylene terephthalate and DMT process residue.
  • Oxidation of P-xylene and method for preparing DMT.
  • Aromatic Polyester polyols from DMT process residue and tall oil fatty acids.
  • Preparation of Terephthalic acid from a crude DMT.
  • Preparation of DMT via the air oxidation of P-Tolualdehyde.
  • DMT composition and process for producing the same.

Market & Uses

  • DMT Market Demands.
  • DMT uses in production process of most popular man-made fiber.

Process & Report

  • Locating and Estimating air emissions from sources of xylene.
  • Implementation of fuzzy cognitive maps in DMT distillation.
  • Transesterification of DMT with 1,4-Butanediol catalyzed by tetrabutyl titanate.
  • Production of PET by direct esterification using prevaporation.

 

 

 

 

 

 

 

 

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