Description

4,4'-Oxydianiline, Polymer With 3,3-(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Bispropylamine And 4,4'-Biphthlic Dianhydride is a high-performance polyimide-siloxane copolymer, known for its exceptional thermal stability and mechanical flexibility. This specialty polymer is engineered to deliver a unique combination of high-temperature resistance and processability, making it a critical material for advanced engineering applications. It is primarily sought by manufacturers in the aerospace, electronics, and high-performance coatings industries for demanding environments.

Application

• Flexible Electronics: Used as a dielectric and protective coating for flexible printed circuit boards (FPCBs) and displays.
• Aerospace Components: Employed in wire and cable insulation, gaskets, and seals requiring thermal and radiation resistance.
• Advanced Adhesives & Sealants: Serves as a key component in high-temperature adhesives for bonding dissimilar materials.
• Microelectronics Packaging: Applied as a stress buffer or α-particle barrier in semiconductor packaging.
• High-Temperature Protective Coatings: Formulated into coatings for industrial equipment and automotive components exposed to extreme heat.
• Gas Separation Membranes: Utilized in the fabrication of membranes for selective gas separation at elevated temperatures.

Basic Information

Product Name	4,4'-Oxydianiline, Polymer With 3,3-(1,1,3,3-Tetramethyldisiloxane-1,3-Diyl)Bispropylamine And 4,4'-Biphthlic Dianhydride
CAS No.	84329-59-9
Molecular Formula	(C48H44N4O5Si2)n
Molecular Weight	~800-2500 g/mol (monomer unit)
Synonyms	Polyimide-siloxane copolymer; Poly(imide-siloxane); BPDA-ODA/APPS copolymer; 4,4'-Biphthalic dianhydride-4,4'-oxydianiline-aminopropyl terminated polydimethylsiloxane copolymer; Siloxane-modified polyimide; Thermoplastic polyimide elastomer; PI-PDMS copolymer; CAS 84329-59-9
EINECS	Contact for details

Quality Control

Our polyimide-siloxane copolymer is manufactured under strict quality protocols to ensure batch-to-batch consistency and performance reliability. Quality is verified through a suite of analytical techniques including Gel Permeation Chromatography (GPC), FT-IR, and Thermal Gravimetric Analysis (TGA). A comprehensive Certificate of Analysis (COA) detailing molecular weight distribution, thermal properties, and purity 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 room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent moisture absorption, which may affect processing characteristics.

Specification

Item	Specification
Appearance	Yellow to amber pellets or powder
Identification (IR)	Conforms to structure
Inherent Viscosity	0.4 - 0.8 dL/g (typical)
Glass Transition Temp (Tg)	200 - 250 °C
Decomposition Temp (Td5%)	> 450 °C
Siloxane Content	10 - 30 wt%
Moisture Content	< 0.5 %

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