Description

5-Isobenzofurancarbonyl Chloride, 1,3-Dihydro-1,3-Dioxo-, Polymer With 4,4-Methylenebisbenzenamine is a high-performance polyimide precursor or oligomer, synthesized from the reaction of trimellitic anhydride chloride and methylene dianiline. This advanced material is valued for its ability to impart exceptional thermal stability, mechanical strength, and chemical resistance in final polymer formulations. It is a critical intermediate for manufacturers in the aerospace, electronics, and high-temperature coating industries seeking to develop durable and reliable polyimide components.

Application

• Primary raw material for the synthesis of high-performance polyimide resins and films.
• Production of advanced engineering plastics for automotive and aerospace components requiring thermal endurance.
• Manufacture of electrical insulation materials, including wire enamels and flexible circuit substrates.
• Key component in formulating high-temperature adhesives and sealants.
• Used in the creation of protective and dielectric coatings for sensitive electronic devices.
• Intermediate for research and development of novel heat-resistant polymers and composite materials.

Basic Information

Product Name	5-Isobenzofurancarbonyl Chloride, 1,3-Dihydro-1,3-Dioxo-, Polymer With 4,4-Methylenebisbenzenamine
CAS No.	25928-85-2
Molecular Formula	(C9H3ClO4 · C13H14N2)n
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Poly(trimellitic anhydride chloride-co-4,4'-methylenedianiline); Trimellitic Anhydride Chloride-MDA Copolymer; Polyimide Precursor from TAC and MDA; Poly(1,3-dihydro-1,3-dioxo-5-isobenzofurancarbonyl chloride-co-4,4'-methylenebisbenzenamine); TAC-MDA Oligomer; Poly(trimellitoyl chloride-co-methylenedianiline); Polyamic Acid Chloride Precursor (based on MDA); PMDA/MDA Analog (Chloride Form)
EINECS	Contact for details

Quality Control

Our production of this advanced polymer intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through analytical techniques including FT-IR, GPC (Gel Permeation Chromatography) for molecular weight distribution, and thermal analysis. A comprehensive Certificate of Analysis (COA) detailing purity, viscosity, and other critical parameters is provided with each shipment to support your quality assurance and R&D processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is moisture-sensitive (hygroscopic) and should be handled under dry conditions to prevent hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to amber powder or granules
Identification (IR)	Conforms to structure
Inherent Viscosity	0.2 - 0.8 dL/g (typical, solvent dependent)
Chloride Content	Contact for details
Moisture Content (KF)	< 1.0 %
Glass Transition Temp (Tg)	> 200 °C (DSC)

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