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Q

Product Application of Pyromellitic Dianhydride

A

Pyromellitic dianhydride is used as curing agent of epoxy resin adhesive, reference dosage 56 parts, curing conditions 180 ℃/5~15min. 220 ℃/10h curing, glass temperature Tg of 300℃.

Q

Quality Indicators of Pyromellitic Dianhydride

A

Name of Indicator: First-class qualified products have white to light yellow crystals in appearance, and mass fraction without mechanical impurities purity/% is ≥ 99.0 98.0 melting point/℃ 285~288 283.5~287 and equivalent 54.5±0.2 54.5±0.2

Q

Safety Terminology of Pyromellitic Acid

A

After contact with eyes, rinse immediately with plenty of water and seek medical advice.

Q

Molecular Structure Data of Pyromellitic Anhydride

A

Molar refractivity: 45.11

Q

Physical and Chemical Properties of Pyromellitic Anhydride

A

Solubility: Soluble in dimethylformamide, dimethyl sulfoxide, γ-butyrolactone, N-methyl pyrrolidone, acetone, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, insoluble in chloroform, ethyl ether, n-hexane, benzene

Q

Usages of Pyromellitic Anhydride

A

It is used in the manufacture of polyimide resin, also used for the preparation of epoxy resin curing agent and plasticizer, urea formaldehyde resin stabilizer, phthalocyanine blue dye, corrosion inhibitor, instant binder, electronic photography toner, etc.

Q

Usage of Pyromelenetic Acid

A

It is used in the synthesis of polyimide, octyl ester, etc., and it is the main raw material for the production of matting curing agent.

Q

Physical and Chemical Properties of Pyromellitic Acid

A

White to yellowish crystalline powder. Melting point 276 ℃ (anhydrous),242 ℃ (with 2 molecular crystal water), a specific gravity of 1.79. Soluble in alcohol, slightly soluble in ether and water. Can sublimate.

Q

Product Usages of Pyromellitic Dianhydride

A

This product is mainly used as the raw material of polyimide, epoxy resin curing matting agent and polyester resin crosslinking agent.

Q

Appearance and Properties of Pyromellitic Dianhydride

A

This product is white or slightly yellow crystal, melting point 284-288 ℃, boiling point 397-400 ℃, flash point 380 ℃, specific gravity 1.680, soluble in dimethyl sulfoxide, dimethylformamide, acetone, methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate, insoluble in chloroform, ether and benzene.
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