Description

Poly(Pyromellitic Dianhydride-Co-4,4'-Oxydianiline), Amic Acid is a high-performance polyimide precursor, specifically the poly(amic acid) intermediate derived from pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA). This material is critically important for its role in the synthesis of Kapton-type polyimides, which are renowned for their exceptional thermal stability, mechanical strength, and chemical resistance. It is primarily needed by manufacturers in the electronics, aerospace, and advanced materials sectors for producing high-temperature films, coatings, and composite matrices.

Application

• Flexible Printed Circuit (FPC) Manufacturing: As a key precursor for polyimide films used as insulating substrates and coverlays.
• High-Temperature Wire & Cable Insulation: For producing polyimide coatings that protect conductors in aerospace and automotive applications.
• Advanced Composite Matrices: Used in the formulation of high-performance composites for structural components requiring thermal and chemical resilience.
• Semiconductor Fabrication: Employed in dielectric layers and protective coatings within microelectronic devices.
• Adhesive & Coating Formulations: For creating specialized high-temperature adhesives and protective surface coatings.
• Membrane Technology: As a starting material for manufacturing thermally stable separation membranes.

Basic Information

Product Name	Poly(Pyromellitic Dianhydride-Co-4,4'-Oxydianiline), Amic Acid
CAS No.	25038-81-7
Molecular Formula	(C22H10N2O5)n
Molecular Weight	~ (382.33)n g/mol (monomer unit)
Synonyms	PMDA-ODA Poly(amic Acid); Polyimide Precursor (PMDA/ODA); Poly[4,4'-oxydiphenylene pyromellitamic acid]; Kapton Poly(amic Acid); Poly(pyromellitimido-oxydiphenylene) precursor; Poly(amic acid) from PMDA and ODA; ODA-PMDA Poly(amic Acid); Poly[oxy(4,4'-diphenylene)pyromellitamic acid]
EINECS	Contact for details

Quality Control

Our Poly(Pyromellitic Dianhydride-Co-4,4'-Oxydianiline), Amic Acid undergoes rigorous quality testing to ensure batch-to-batch consistency and performance for demanding applications. Key parameters such as inherent viscosity, solid content, and residual solvent levels are strictly monitored. Certificates of Analysis (COA) detailing purity, viscosity, and other critical specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at temperatures between 2°C and 8°C to maximize shelf-life and prevent premature imidization or degradation. This product is hygroscopic (moisture-sensitive) and should be handled under dry conditions to maintain its solution properties and molecular weight integrity.

Specification

Item	Specification
Appearance	Yellow to amber viscous solution
Solid Content	10 - 20 % (w/w)
Inherent Viscosity	0.5 - 2.0 dL/g (typical)
Solvent	N-Methyl-2-pyrrolidone (NMP) or DMAC
Identification (IR)	Conforms to structure
Residual Monomers (HPLC)	< 0.5 %
Moisture Content (KF)	< 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.