Description

1,3-Benzenedicarboxylic Acid,Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancarboxylic Acid And 1,1'-Methylenebis(Isocyanatobenzene) is a high-performance polyimide precursor or oligomer, valued for its exceptional thermal stability and mechanical properties. This advanced polymer intermediate is engineered to meet the stringent demands of high-temperature and high-reliability applications. It is primarily sought by manufacturers in the aerospace, electronics, and specialty coatings industries for producing polyimide resins, films, and composite materials.

Application

• High-Temperature Polyimide Resins: Serves as a critical building block for the synthesis of polyimides used in aerospace components and engine parts.
• Flexible Printed Circuit Boards (FPCs): Used in the production of high-performance polyimide films that form the base substrate for flexible electronics.
• Wire and Cable Insulation: Imparts superior thermal resistance and dielectric properties to insulation materials for demanding environments.
• Adhesives and Sealants: Formulated into high-temperature adhesives for bonding metals, ceramics, and other composites.
• Protective and Insulating Coatings: Applied as a coating to provide thermal barrier and chemical resistance to sensitive components.
• Advanced Composite Materials: Incorporated as a matrix resin in carbon fiber or glass fiber composites for lightweight, strong structures.
• Microelectronics Packaging: Utilized in dielectric layers and stress buffer coatings within semiconductor devices.

Basic Information

Product Name	1,3-Benzenedicarboxylic Acid,Polymer With 1,3-Dihydro-1,3-Dioxo-5-Isobenzofurancoxylic Acid And 1,1'-Methylenebis(Isocyanatobenzene)
CAS No.	37317-16-1
Molecular Formula	(C8H6O4·C9H4O5·C15H10N2O2)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(Isophthalic Acid-co-Trimellitic Anhydride-co-MDI); Isophthalic Acid/Trimellitic Anhydride/MDI Copolymer; Polyimide Precursor Oligomer (Isophthalic Acid/Trimellitic Anhydride/MDI based); MDI-Isophthalic Acid-Trimellitic Anhydride Terpolymer; 4,4'-Methylenebis(phenyl isocyanate) polymer with isophthalic acid and trimellitic anhydride; Thermoplastic Polyimide Intermediate; Benzene-1,3-dicarboxylic acid polymer with 1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid and 1,1'-methylenebis(isocyanatobenzene)
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to rigorous quality management systems to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive analytical testing, including determination of inherent viscosity, residual monomer content, and thermal transition properties. Certificates of Analysis (COA) detailing lot-specific results are provided with every shipment to support your quality assurance protocols.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Off-white to light tan powder or granules
Identification (IR)	Conforms to structure
Inherent Viscosity	0.35 - 0.65 dL/g (Typical)
Glass Transition Temperature (Tg)	200 - 280 °C (DSC)
Residual Monomer (HPLC)	< 0.5%
Moisture Content (KF)	< 1.0%
Ash Content	< 0.1%

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