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Synthesis of Monofunctional Cyanate and Use Thereof in Making Low Temperature Curable Cyanate Compositions

IP.com Disclosure Number: IPCOM000103159D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 59K

Publishing Venue

IBM

Related People

Papathomas, KI: AUTHOR [+2]

Abstract

Disclosed is the synthesis of a monofunctional, reactive, liquid cyanate, i.e., dinonyl phenol cyanate, which can be utilized in modifying the properties of the bisphenol A based cyanate resins. Specifically the liquid cyanate can be utilized in modifying the thermosetting resins resulting from the cyclotrimerization of fluorinated bisphenol A dicyanate (6F-BADCY) to produce laminating resins having low temperature processability (lamination at 177¯C), and glass transition temperatures in the range of 140-200¯OC which still maintain excellent dielectric properties.

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Synthesis of Monofunctional Cyanate and Use Thereof in Making Low Temperature Curable Cyanate Compositions

      Disclosed is the synthesis of a monofunctional, reactive,
liquid cyanate, i.e., dinonyl phenol cyanate, which can be utilized
in modifying the properties of the bisphenol A based cyanate resins.
Specifically the liquid cyanate can be utilized in modifying the
thermosetting resins resulting from the cyclotrimerization of
fluorinated bisphenol A dicyanate (6F-BADCY) to produce laminating
resins having low temperature processability (lamination at 177¯C),
and glass transition temperatures in the range of 140-200¯OC which
still maintain excellent dielectric properties.

      The cyclotrimerization of the bisphenol A dicyanate results in
thermosetting resins with outstanding dielectric and thermal
properties compared to epoxies.  Such properties makes them very
attractive for circuit board applications where high processing
speeds are critical.  Monomers and oligomers of the cyanate resins
are available from Hi-Tek Polymers, Inc.  The unmodified systems upon
curing result in high glass temperatures (300¯C) and require fairly
high curing temperatures (320¯C/1 hr).  For this reason high
temperature lamination presses or autoclaves are necessary to
fabricate laminates from these prepolymers.

      This method should give us resins that can be impregnated into
suitable reinforcing fabrics and heat cured at FR-4 epoxy processing
conditions, i.e., abou...