Description

sec-Butylidenedi-p-Phenylene Cyanate is a specialized aromatic cyanate ester monomer. This compound is a critical building block in the synthesis of high-performance thermosetting polymers, particularly polycyanurates. Its primary value lies in enabling the production of advanced materials that offer exceptional thermal stability, low dielectric loss, and excellent mechanical properties. It is essential for manufacturers in the aerospace, electronics, and advanced composites industries seeking to develop next-generation structural components, circuit boards, and radomes.

Application

• High-Temperature Composite Matrices: Used as a resin precursor for manufacturing carbon fiber and glass fiber reinforced composites in aerospace and automotive applications.
• Electronic Encapsulation & Circuit Boards: Serves as a key component in the formulation of advanced potting compounds, adhesives, and dielectric layers for high-frequency printed circuit boards (PCBs).
• Radome and Microwave Transparent Structures: Ideal for polymers requiring stable dielectric properties and low moisture absorption in radar and communication systems.
• Structural Adhesives: Formulated into high-strength, heat-resistant adhesives for metal-to-metal and composite bonding.
• Fire-Resistant & Flame-Retardant Materials: Incorporated into polymer systems where superior fire, smoke, and toxicity (FST) performance is required.
• Advanced Coating Systems: Used in protective coatings that demand chemical resistance and durability under extreme thermal cycling.

Basic Information

Product Name	sec-Butylidenedi-p-Phenylene Cyanate
CAS No.	38943-05-4
Molecular Formula	C19H14N2O2
Molecular Weight	302.33 g/mol
Synonyms	1,1'-(1-Methylpropylidene)bis(4-cyanobenzene); Bis(4-cyanophenyl)-2-butylidene; 2-Butylidenebis(4-cyanobenzene); 4,4'-(1-Methylpropylidene)diphenyl cyanate; Dicyanate ester of bisphenol A analog; Arocy B-10 (trade name related); Cyanate ester resin monomer; Bis(4-cyanophenyl)-sec-butylidene
EINECS	Contact for details

Quality Control

Every batch of our sec-Butylidenedi-p-Phenylene Cyanate is manufactured and tested under a strict quality management system. We ensure the product meets high-purity standards suitable for advanced polymer synthesis. Comprehensive analytical testing, including HPLC for purity and FT-IR for identification, is performed. A Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment to guarantee consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). To prevent degradation and maintain optimal performance, the container must be kept tightly sealed under a dry, inert atmosphere (e.g., nitrogen or argon) after opening.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Moisture Content (KF)	≤ 0.5%
Residual Phenol (GC)	≤ 0.1%

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