Description

1,3-Benzenedicarbonyl Dichloride,Polymer With Benzenamine,4,4-[(1-Methylethylidene)Bis(4,1-Phenyleneoxy)]Bis- is a high-performance polyamide-imide (PAI) prepolymer, a critical intermediate in the synthesis of advanced engineering thermoplastics. This compound matters for its exceptional thermal stability, mechanical strength, and chemical resistance, which are imparted to the final polymer. It is primarily needed by manufacturers in the aerospace, automotive, and electronics industries for producing high-temperature resistant coatings, adhesives, films, and composite materials.

Application

• High-Temperature Wire & Cable Enamels: As a key resin component for insulating coatings that withstand extreme thermal and electrical stress.
• Advanced Composite Matrices: For manufacturing lightweight, high-strength components in aerospace and automotive applications.
• Industrial Protective Coatings: Formulating durable, chemical-resistant coatings for metal substrates in harsh environments.
• Electronic Encapsulants & Adhesives: Providing reliable insulation and bonding in semiconductor and microelectronic devices.
• Friction Materials: Used in brake pads and clutch facings for enhanced thermal performance and durability.
• Membrane Technology: Serving as a precursor for high-performance separation membranes in gas and liquid filtration.

Basic Information

Product Name	1,3-Benzenedicarbonyl Dichloride,Polymer With Benzenamine,4,4-[(1-Methylethylidene)Bis(4,1-Phenyleneoxy)]Bis-
CAS No.	62239-17-2
Molecular Formula	(C14H6Cl2O2 · C27H24N2O2)n
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Polyamide-imide prepolymer; PAI prepolymer; Isophthaloyl chloride polymer with 4,4'-(1-methylethylidene)bis[phenoxy]aniline; Poly(isophthaloyl chloride-co-4,4'-(isopropylidenediphenoxy)dianiline); Torlon precursor; Amoco AI polymer intermediate; Thermoplastic polyamide-imide resin; 4,4'-(Isopropylidenediphenoxy)dianiline-isophthaloyl chloride copolymer
EINECS	Contact for details

Quality Control

Our 1,3-Benzenedicarbonyl Dichloride,Polymer With Benzenamine,4,4-[(1-Methylethylidene)Bis(4,1-Phenyleneoxy)]Bis- is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Production adheres to ISO 9001 standards, with critical parameters monitored via advanced analytical techniques. A comprehensive Certificate of Analysis (COA) detailing intrinsic viscosity, glass transition temperature (Tg), residual monomer content, and other key specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen) when not in use to prevent moisture absorption and premature polymerization. Isolate from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to amber granules or powder
Identification (IR)	Conforms to structure
Intrinsic Viscosity	0.40 - 0.70 dL/g (Typical)
Glass Transition Temp (Tg)	> 270 °C
Residual Monomer (HPLC)	< 1.0 %
Moisture Content (KF)	< 0.5 %
Ash Content	< 0.1 %

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