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CYTESTER (Cyanate Ester Monomer)

CYTESTER is a thermosetting resin containing –OCN groups. By repeating cyclotrimerization of three –OCN groups, cyanate esters form three-dimensional network polymers linked by triazine rings.

 The polymers of CYTESTER possess excellent thermal and electrical properties. In addition, they can be modified by formulation  with other thermosetting resins such as epoxies, maleimides and benzoxazines.

Structure and Curing Mechanism of CYTESTER

General Properties of CYTESTER

  • Cyanate Ester Monomers

    ・Low  Melt Viscosity

    ・Good Solubility in Common Solvents

  • Cured Resins

    ・High Tg

    ・Low Dk, Df

    ・Good Electrical Insulation

    ・Flame Retardancy

    ・Radiation Resistance

Main Applications

  • Electronic Materials

  • Structural Materials

Properties of Homopolymers of CYTESTER

 

(Reference)

Anhydride Epoxy

Resin System*¹

CYTESTER

TA

Tg(DMA)[degC]
150
300

CTEα1*²

[ppm/degC]

72
59
Flexural Strength*³[MPa]
126
139
Flexural Modulus*³[GPa]
2.8
2.9
  • *1 DGEBF(curing agent Me-HHPA)
  • *2 ASTM D696
  • *3 ASTM D790
  • All data are typical data and not guaranteed.

     

    In addition, newly developing CYTESTER monomers are available.

    Please feel free to contact us.

Inquiries Concerning Products

Natural Gas Chemicals Company
Organic Chemicals Division
Sales & Marketing Department II
TEL:+81-3-3283-4777 / FAX:+81-3-3214-0930