CAS NO.:1156-51-0
Molecular Formula:C17H14N2O2
Molecular Weight:278.31
EINECS:214-590-4
Synonyms:Cyanicacid, (1-methylethylidene)di-4, 1-phenyleneester; propane,2,2-bis(4-cyanatophenyl)-
2,2-Bis-(4-cyanatophenyl)propane (CAS 1156-51-0), also known as Bisphenol A cyanate ester, is a high-performance thermosetting resin monomer widely used in advanced composite materials and electronic encapsulation. It features excellent thermal stability, low dielectric constant, and superior mechanical strength, making it a key material in aerospace, electronics, and high-performance composites.
As a difunctional cyanate ester derived from Bisphenol A, it undergoes cyclotrimerization reactions to form triazine ring networks, resulting in highly crosslinked structures with outstanding thermal and dielectric properties.
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Produkt-name
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2,2-Bis-(4-cyanatophenyl)propane
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Cas-Nr.
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1156-51-0
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Aussehen
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Weißes Pulver
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Assay
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99%
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Anwendung
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organic intermediate
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MOQ
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1kg
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Schnelle Lieferung
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1-5days
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Zahlungsbedingungen
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T/T;L/C;Geld Gramm;Handel assurance Auftrag
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Schmelzpunkt
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80 °C
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Siedepunkt
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391.0±52.0 °C(Predicted)
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Dichte
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1.171±0.06 g/cm3(Predicted)
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Lagerung temp.
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Versiegelt, trocken,Raumtemperatur
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Bisphenol A cyanate ester (CAS 1156-51-0) is widely used in carbon fiber composites, glass fiber composites, and aerospace-grade laminates. Its crosslinked triazine structure provides:
High glass transition temperature (Tg > 250°C)
Excellent dimensional stability
Low moisture absorption
Superior adhesion to reinforcing fibers
These properties make it ideal for aerospace structures, satellite components, and high-performance automotive composites.
Owing to its low dielectric constant and excellent thermal endurance, 2,2-Bis-(4-cyanatophenyl)propane is a key material in:
Printed circuit boards (PCBs)
Semiconductor encapsulation resins
High-frequency electronic substrates
Adhesive formulations for electronic packaging
Its low outgassing and minimal dielectric loss ensure stability in microelectronic and communication equipment.
The reactive cyanate ester groups enable self-polymerization or copolymerization with epoxy or bismaleimide resins. This improves:
Crosslink density and mechanical strength
Chemical and solvent resistance
Long-term heat resistance
Therefore, it’s often used in heat-resistant coatings, adhesive systems, and structural composites requiring durability under extreme environments.

25kgs/Trommel, 9tons/20'container
