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575771

Sigma-Aldrich

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

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

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Synonym(s):
Pyre-M.L.® RK-692, Polyamic acid
Linear Formula:
(C12H12N2O .C10H2O6)x

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

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This Item
593052575798575828
refractive index

n20/D 1.5052

refractive index

n20/D 1.502

refractive index

n20/D 1.5050

refractive index

n20/D 1.5120

density

1.03 g/mL at 25 °C (relative)

density

1.066 g/mL at 25 °C

density

1.085 g/mL at 25 °C

density

1.090 g/mL at 25 °C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

concentration

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

concentration

11 wt. %±5 wt. % in NMP/aromatic hydrocarbons (80%/20% solvent ratio)

concentration

12.8 wt. % (80% NMP/20% aromatic hydrocarbon)

concentration

15.0 wt. %±5 wt. % in NMP/aromatic hydrocarbons (80%/20% solvent ratio)

solubility

H2O: miscible

solubility

-

solubility

H2O: soluble 65-71 wt. %

solubility

H2O: 65-71 wt. %

General description

Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution (PAA) converts to polyimide at 300oC. 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.

Signal Word

Danger

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

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

84.2 °F - closed cup

Flash Point(C)

29 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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