[4-(4-aminobenzoyl)oxyphenyl] 4-aminobenzoate (ABHQ)

Basic Information of ABHQ

Product Name	[4-(4-aminobenzoyl)oxyphenyl] 4-aminobenzoate
Abbreviation	ABHQ
CAS Number	22095-98-3
Product Type	Aromatic diamine monomer with ester linkages
Molecular Formula	C20H16N2O4
Molecular Weight	348.35 g/mol
Appearance	Off-white powder
Purity	≥ 99.5%; available batch result 99.68% by HPLC
Moisture	≤ 0.05%; available batch result 0.04%
Main Application	Polyimide, polyamide and specialty aromatic polymer synthesis
Package	1 kg/bottle, 20 kg/drum, or customized packaging
Documents	COA, SDS and TDS available upon request
Molecular Structure

Typical Specification of ABHQ

The above data is based on an available batch COA for ABHQ CAS 22095-98-3. Final specifications, batch data and documentation should be confirmed by the latest COA before order confirmation.

Key Features in Polymer Design

• Rigid aromatic diamine structure, relevant to high-performance polyimide and specialty aromatic polymer design.

• Ester-containing molecular structure may support a balance of rigidity, processability and film-forming behavior depending on the paired dianhydride and formulation.

• ABHQ can be considered in specialty functional polyimide development where molecular rigidity and structural design are important.

• Aromatic backbone structure may be relevant to high-temperature polyimide applications when paired with suitable dianhydride monomers.

• The final material properties depend on monomer purity, dianhydride selection, solvent system, imidization conditions and polymer processing method.

Pairing ABHQ with Dianhydride Monomers

In polyimide synthesis, ABHQ may be evaluated with selected polyimide dianhydride monomers to design rigid, specialty or processable polyimide systems. Rigid aromatic dianhydrides such as BPDA CAS 2420-87-3 or BTDA CAS 2421-28-5 may support thermal resistance and dimensional stability, while ether-containing dianhydrides such as ODPA CAS 1823-59-2 may help improve processability and film-forming behavior.

The final polyimide performance depends on the complete diamine-dianhydride pair, formulation, purity level and processing conditions.

Application Context of ABHQ in Polyimide Systems

ABHQ is typically used as a structural monomer rather than a finished application material. It can be considered in high-performance polymer research where aromatic rigidity, ester-containing structure and balanced processability are of interest.

• Specialty functional polyimide development – structural monomer selection for specialty polymer systems.

• Flexible and processable polyimide applications – processability, film formation and polymer design considerations.

• High-temperature polyimide applications – thermal stability and high-performance polymer environments.

• Optical and structurally ordered polymer systems – aromatic structure and polymer alignment research contexts.

Related Polyimide Monomer Supply Guides

For a broader technical overview of both diamine and dianhydride monomer families, please review Polyimide Monomers: Diamines and Dianhydrides.

Related Polyimide Monomers

• BAPP CAS 13080-86-9 – ether-containing aromatic diamine for processable and heat-resistant polyimide systems.

• BPDA CAS 2420-87-3 – rigid aromatic dianhydride for low-CTE and high-temperature PI films.

• ODPA CAS 1823-59-2 – ether-containing dianhydride for processable and flexible PI systems.

COA, SDS and Technical Documentation

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