Description

Siloxanes And Silicones, Di-Me, Polymers With Bisphenol A And Carbonic Dichloride is a specialized polycarbonate-polysiloxane copolymer, identified by CAS NO 103458-54-4. This engineered material is valued for its unique combination of the high impact strength and clarity of polycarbonate with the superior thermal stability, flexibility, and hydrophobicity of silicone. It is essential for manufacturers requiring advanced materials that perform reliably under demanding thermal and mechanical stress. Key industries that utilize this high-performance copolymer include medical device manufacturing, specialty optics, and high-temperature engineering plastics.

Application

• Medical Device Components: Used in housings, connectors, and transparent parts requiring repeated sterilization (autoclaving), biocompatibility, and clarity.
• High-Performance Optical Lenses and Films: Provides excellent optical clarity, impact resistance, and thermal stability for protective covers, lenses, and light guides.
• Engineering Thermoplastics: Serves as a modifier to enhance the impact strength, flame retardancy, and heat deflection temperature of standard polycarbonate blends.
• Automotive and Aerospace Interiors: Applied in components that must withstand wide temperature fluctuations while maintaining dimensional stability and mechanical properties.
• Specialty Coatings and Adhesives: Imparts durability, flexibility, and resistance to weathering and UV radiation in high-end protective coatings.
• Electronic Encapsulants: Protects sensitive electronic components due to its good dielectric properties and thermal management capabilities.

Basic Information

Product Name	Siloxanes And Silicones, Di-Me, Polymers With Bisphenol A And Carbonic Dichloride
CAS No.	103458-54-4
Molecular Formula	Typically (C15H16O2.C2H6OSi)n or similar copolymer structure
Molecular Weight	Varies by grade and siloxane block length. Contact for details.
Synonyms	Polycarbonate-polysiloxane copolymer; Bisphenol A polycarbonate-dimethylsiloxane block copolymer; PC-PDMS copolymer; Poly(bisphenol A carbonate)-block-poly(dimethylsiloxane); Silicone-modified polycarbonate; Polycarbonate silicone copolymer; Impact-modified polycarbonate with silicone; Transparent thermoplastic silicone elastomer alloy
EINECS	Contact for details.

Quality Control

Our production of this advanced copolymer adheres to strict quality management systems, ensuring batch-to-batch consistency for critical applications. Quality is verified through a suite of analytical techniques including GPC (for molecular weight distribution), FT-IR (for structural identification), and thermal analysis (DSC/TGA). A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing key parameters such as siloxane content, intrinsic viscosity, thermal transition temperatures, and clarity. We support compliance with relevant regulatory frameworks for target industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This material is hygroscopic (moisture-sensitive); keep the original container sealed to prevent absorption of atmospheric moisture, which can affect processing and final properties. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Transparent or translucent pellets/granules
Identification (IR)	Conforms to structure
Siloxane Content	5% - 20% (Grade dependent)
Intrinsic Viscosity	0.45 - 0.65 dL/g (Typical)
Glass Transition Temperature (Tg)	140 - 155 °C
Moisture Content	< 0.02%
Melt Flow Rate (MFR)	Grade dependent
Yellowness Index	< 2.0
Light Transmittance	> 88%

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