Thioplast G4

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Nouryon is the largest producer of liquid polysulfide polymer Thioplast G worldwide. We produce a number of different Thioplast G types with different molecular weight and degree of branching. Due to the excellent property of the cured Thioplast G such as elasticity and pronounced chemical resistance it is mainly used as base polymer to produce sealants for many industries. Physical properties such as tensile strength and adhesion can be adjusted by using various fillers, plasticizers and additives.

  • Product name

    Thioplast G4
  • Brand

  • Chemical family

  • CAS number

  • Physical form

  • Regional availability

  • Chemical name

    Liquid polysulphide polymer with thiol end groups (MW < 1800)
  • Applications

    Thioplast G4 is used as reactive diluent in Thioplast G based sealants to formulate low viscos, flexible and highly elastic sealants being used in aerospace and construction applications with best performance in high Nobel Gas retention and low moisture vapor permeability. Additionally, Thioplast G4 is used as highly reactive partner in Amine cured Epoxies (like Bisphenol (A, F, AF) DGE and Novolac) to adapt and optimize tensile- / impact strength and elasticity (brittleness). Support on stoichiometric calculation to cure Epoxies with Thioplast G4 is available on request.

Market Segments

Building & Construction

Detailed description

Polysulphide, Mercapto-functionalized


  • Reactive Thinner,
  • Sealant


  • Aerospace,
  • Coatings