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Neopulim® (Transparent Polyimide Resin)

Neopulim® is a solvent-soluble transparent polyimide resin.
Because imidization is already completed, only solvent volatilization is required.
We offer 3 grades: The “S series” is our standard grade featuring excellent transparency and high heat-resistance. The “H series” has excellent optical characteristics and ultra-high heat resistance while the “R series” has high refractive index.
By taking advantage of these features, Neopulim® can be used for displays and various other optical applications.

  • Neopulim®-S ⇒ High Transparency Standard grade
  • Neopulim®-H ⇒ High Heat-Resistance grade
  • Neopulim®-R ⇒ High Refractive Index grade

Varnish

Film

Advantages

  • High Heat-Resistance
  • High Transparency
  • Low Temperature Dry
  • High Refractive Index

Varnish Properties

Varnish S-100 S-200 Measurement method
S-Grade Viscosity (Pa・s) 1.8 3.1 25℃
Non volatile contents (wt%)  13 14 Weight loss on heating at 320℃
Solvent (-)
  • 1. DMAc
  • 2. NMP
  • 3. GBL,DMAc
  • 1. GBL
  • 2. GBL,DMAc
Varnish H-100 H-115 Measurement method
H-Grade Viscosity (Pa・s) 22.5 1.5 25℃
Non volatile contents (wt%) 20 18 Weight loss on heating at 320℃
Solvent (-)
  • 1. GBL
  • 2. NMP
  • 3. GBL,DMAc
NMP,MIBK
Varnish R-2115 R-100 Measurement method
R-Grade Viscosity (Pa・s) 0.3 28.0 25℃
Non volatile contents (wt%) 12 20 Weight loss on heating at 320℃
Solvent (-) GBL,DMAc GBL,DMAc

Optical & Thermal Properties of Film

Film S-Grade H-Grade R-Grade
Thickness (μm) 10 15 40
Refractive index (-) 1.62 1.67
Transmittance (%) 89.9 90.0 86.3
Tg (℃) 300 489 379
CTE (100-200℃)
( ppm/℃)
58 33
CTE (100-350℃)
( ppm/℃)
37

Forming Process

Imidization is already finished, so you only have to vaporize solvent to form film.

Product Brochure

Contact

Aromatic Chemicals Company
Aromatic Chemicals DivisionⅠ

TEL:+81-3-3283-4806
FAX:+81-3-3214-0938

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