Description

Bisphenol A, Tetramethylbisphenol A-Copolycarbonate is a high-performance engineering thermoplastic copolymer. This material is engineered to deliver an enhanced balance of thermal stability, mechanical strength, and chemical resistance compared to standard polycarbonates. It is a critical raw material for manufacturers requiring durable, transparent, and dimensionally stable components. Key industries that utilize this advanced polymer include automotive, electronics, and specialty optics.

Application

• Automotive Components: Used in the production of high-heat resistant lenses for lighting, interior trim, and under-the-hood parts requiring dimensional stability.
• Electronic Housings & Connectors: Ideal for enclosures, sockets, and bobbins that demand excellent dielectric properties and flame retardancy.
• Optical & Lighting Applications: Serves as a material for specialized lenses, light guides, and diffusers where clarity and heat resistance are paramount.
• Medical Device Components: Employed in housings for diagnostic equipment and reusable devices that require sterilization compatibility and toughness.
• Industrial & Machine Parts: Used for gears, bearings, and sight glasses that operate in demanding chemical or thermal environments.
• Safety & Protective Equipment: Formulated into visors, shields, and protective glazing that offer impact resistance and clarity.

Basic Information

Product Name	Bisphenol A, Tetramethylbisphenol A-Copolycarbonate
CAS No.	50861-79-5
Molecular Formula	(C15H16O2.C19H24O2)x
Molecular Weight	Polymer (Variable)
Synonyms	Poly(Bisphenol A-co-Tetramethylbisphenol A Carbonate)
BPA-TMBPA Copolycarbonate
Tetramethylbisphenol A/Bisphenol A Copolymer
PC Copolymer (BPA/TMBPA)
Thermoplastic Copolycarbonate Resin
High-Heat Polycarbonate Copolymer
Engineering Polycarbonate Copolymer
EINECS	Contact for details

Quality Control

Our Bisphenol A, Tetramethylbisphenol A-Copolycarbonate is manufactured under a strict quality management system. Each batch is characterized for key parameters including molecular weight distribution, thermal properties (Tg), and intrinsic viscosity to ensure consistent performance in downstream processing. Certificates of Analysis (COA) detailing lot-specific data are available upon request.

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). Keep away from strong acids, bases, and organic solvents. The material is hygroscopic; ensure containers are sealed after opening to prevent moisture absorption, which can affect processing characteristics.

Specification

Item	Specification
Appearance	Clear to pale yellow pellets or granules
Glass Transition Temperature (Tg)	> 155 °C
Intrinsic Viscosity (IV)	0.45 - 0.65 dL/g (Typical)
Melt Flow Rate (MFR)	5 - 25 g/10 min (300°C/1.2 kg)
Moisture Content	< 0.02 %
Yellow Index	< 2.0
Light Transmittance	> 88 %

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