2-ETHYLHEXYL METHYL TEREPHTHALATE AS PLASTICIZER IN ADHESIVES

  • 2-ETHYLHEXYL METHYL TEREPHTHALATE AS PLASTICIZER IN ADHESIVES
  • 2-ETHYLHEXYL METHYL TEREPHTHALATE AS PLASTICIZER IN ADHESIVES
  • 2-ETHYLHEXYL METHYL TEREPHTHALATE AS PLASTICIZER IN ADHESIVES
  • What plasticizers are used in adhesives?
  • The most common plasticizers used with adhesives are a variety of benzoate esters, although dibutyl terephthalate is now being promoted for this application. Nylon is a highly crystalline material and, as such, plasticization can only occur at very low levels.
  • What are phthalate esters?
  • Phthalate Esters Phthalate esters continue to represent the largest chemical class of plasticizers, with DEHP and DINP as the two most commonly used plasticizers globally. Phthalate esters are prepared by the esterification of phthalic anhydride with 2 molar equivalents of an alcohol or an alcohol blend.
  • Which phthalate plasticizers are used in flexible PVC packaging?
  • Human biomonitoring data are available for DINCH, DOTP, DEHA, DINA, and TOTM, and indicate that total exposures from all sources are below regulatory thresholds. Several non-ortho phthalate plasticizers, including ATBC, DEHA, DINCH, DOTP, and ESBO, are currently used in flexible PVC applications for food packaging and processing.
  • What is a polyol ester plasticizer?
  • In the mid-1970s, Hercules Chemical Company introduced two polyol ester plasticizers, Hercoflex 600 and Hercoflex 707. These plasticizers were prepared by the esterification of pentaerythritol and dipentaerythritol with a mixture of short-chain acids, predominately C6 acid.
  • Are phthalate esters compatible with PVC?
  • Esters made with C4 or C5 alcohols produce plasticizers with high volatile losses and generally are not very useful in making flexible PVC products, while phthalate esters made from alcohols with carbon numbers greater than a branched C13 alcohol and greater than a linear C11 alcohol are not compatible with PVC.
  • Can terephthalic acid be produced from DEHTP?
  • Although DEHTP can be produced from terephthalic acid in a traditional DEHP esterification plant with minor modifications to the process, this process is not as efficient as the esterification of phthalic anhydride and manufacturing capacity reductions of >50% are realized. Transesterification of dimethyl terephthalate is a much faster reaction.

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