Description

Carbonic Acid, Diphenyl Ester, Polymer With 4,4-(1-Methylethylidene)Bisphenol is a high-performance polycarbonate oligomer or prepolymer, a critical intermediate in advanced polymer synthesis. This compound matters for its role in producing high-quality, engineering-grade polycarbonate resins known for exceptional impact strength, clarity, and thermal stability. Industries requiring durable, transparent, and dimensionally stable materials, such as automotive, electronics, and medical device manufacturing, rely on this key chemical building block.

Application

• Polycarbonate Resin Production: Primary monomer for the synthesis of high-molecular-weight polycarbonate plastics via melt or interfacial polymerization.
• Optical Media Substrates: Used in the manufacture of CDs, DVDs, and Blu-ray discs requiring high clarity and dimensional precision.
• Automotive Components: Intermediate for producing polycarbonate used in headlamp lenses, interior panels, and glazing applications.
• Electronic Housings & Components: Serves as a precursor for resins used in smartphone cases, laptop housings, and connectors.
• Medical Device Fabrication: Key material for producing sterilizable, transparent components for medical equipment and devices.
• Safety & Protective Glazing: Used in the production of bullet-resistant "glass," safety goggles, and riot shields.
• Specialty Coatings & Adhesives: Acts as a modifier to enhance the durability, weatherability, and adhesion properties of high-performance coatings.

Basic Information

Product Name	Carbonic Acid, Diphenyl Ester, Polymer With 4,4-(1-Methylethylidene)Bisphenol
CAS No.	25929-04-8
Molecular Formula	(C15H16O3)n
Molecular Weight	Variable (Oligomer)
Synonyms	Polycarbonate oligomer; Bisphenol A polycarbonate oligomer; Diphenyl carbonate-bisphenol A copolymer; PC oligomer; Poly(bisphenol A carbonate) oligomer; 4,4'-Isopropylidenediphenol polymer with diphenyl carbonate; BPA-PC oligomer; Aromatic polycarbonate prepolymer
EINECS	Contact for details

Quality Control

Our production of Carbonic Acid, Diphenyl Ester, Polymer With 4,4-(1-Methylethylidene)Bisphenol adheres to stringent quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through parameters including oligomer molecular weight distribution, hydroxyl end-group content, residual monomer levels, and color index. Certificates of Analysis (COA) detailing these specifications are provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). Keep away from strong acids, strong bases, and high temperatures to prevent degradation or premature polymerization.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms to structure
Inherent Viscosity	0.10 - 0.50 dL/g (Typical)
Hydroxyl End-group Content	Contact for details
Residual Diphenyl Carbonate	< 1.0%
Residual Bisphenol A	< 100 ppm
Color (APHA)	< 50
Moisture Content (KF)	< 0.1%

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