575771

Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution

12.0 wt. %±0.5 wt. % (80% NMP/20% xylene)

• Synonym(s): Pyre-M.L.^® RK-692, Polyamic acid
• Linear Formula: (C₁₂H₁₂N₂O .C₁₀H₂O₆)_x
• UNSPSC Code: 12162002
• NACRES: NA.23

Properties

• form: viscous liquid
• concentration: 12.0 wt. %±0.5 wt. % (80% NMP/20% xylene)
• refractive index: n20/D 1.5052
• solubility: H₂O: miscible
• density: 1.03 g/mL at 25 °C (relative)
• storage temp.: −20°C

Description

General description

Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution (PAA) converts to polyimide at 300^oC. The FTIR spectra indicates a carbonyl stretch of carboxylic acids in PAA at 1650 cm^-1. Following the imidization process, the peak at 1720cm^-1 grows, indicating the formation of imide group.

Application

It is used as a precursor for polyimide coatings.
It may also be used as a precursor for the preparation of carbon hollow fiber membranes.

Legal Information

Pyre-M.L. is a registered trademark of Industrial Summit Technologies Corp.

Safety Information

• pictograms: GHS02,GHS08,GHS07
• signalword: Danger
• hcodes: H226,H304,H315,H319,H335,H360D,H373
• pcodes: P202 - P210 - P301 + P310 - P303 + P361 + P353 - P305 + P351 + P338 - P331
• Hazard Classifications: Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 1B - Skin Irrit. 2 - STOT RE 2 Inhalation - STOT SE 3
• target_organs: Central nervous system,Liver,Kidney, Respiratory system
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 2
• flash_point_f: 84.2 °F - closed cup
• flash_point_c: 29 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter