１．Feature

This is a crystalline resin formed by the polycondensation of NDC (naphthalene dicarboxilic acid) and 1,4-butanediol.
Due to naphthalene skeleton derived from NDC, this resin has the following unique features.

  • Excellent in abrasion property
  • Low elution performance
  • Excellent in chemical resistance
  • Excellent in barrier performance against gas and water vapor
  • Fast in Crystallization speed
２．General properties
Item Unit

Test method

ASTM

 PBN PBT
  Measurement condition
Specific gravity   g/cm3 D792 1.31 1.31

Molding shrinkage

（1.5mm）		 Machine direction % In-house method 1.16 1.67
Transverse direction 1.26 1.67
Tensile strength (max.)   MPa D638 65 52
Tensile elongation (max.)   % D638 87 >200
Flexural modulus   MPa D790 1,920 2,550

Inpact strength

1/8 inches

 Noched J/m D256 34 34
Un-noched NB NB
Surface hardness Rockwell   D785 M102 M75
Melting point   ℃ DSC method 243 225
Glass-transition temperature   ℃ DSC method 78 22
Deflection temperature under load Load：1.82MPa ℃ D648 77 58

* Figures described in this table are representative values, not the values for guaranteeing the performance under specific application.
Meanwhile, the contents are subject to revision without prior notice.

３．Abrasion property

＜Test conditions＞

・Against the same material: Load, Speed, Running distance

・Against steel: Load, Speed, Running distance