It was desirable to modify the structure of the phthalonitrile monomer or add diluents to lower the melting temperature [12-16].
In this work, various content of ortho-diallyl Bisphenol A (DABPA) were incorporated to phthalonitrile containing benzoxazine (BA-ph).
The common method to synthesize substituted phthalocyanines is to prepare the phthalonitrile
with required substituents then synthesize the corresponding phthalocynines by cyclotetramerization of the substituted phthalonitrile
As described by Hu and Hornbuckle, the process commonly used to produce these blues and greens involves phthalic anhydride, urea, or phthalonitrile
and a copper or copper salt, which are then processed using an organo-chlorine solvent such as di- or trichloroben-zene.
The method is comprised of a step of obtaining a mixture by mixing at least one compound selected from the group of phthalonitrile
derivative, isoindoline derivative and subphthalocyanine derivative, and a compound supplying copper or titanium with a solvent; and a step of holding the mixture at not less than a temperature where a subcritical state or a supercritical state of the solvent occurs to obtain the pigment by reacting the compounds.
Our synthesis of the dyes involved making and purifying a precursor, a phthalonitrile
, and using it to synthesize a Pc.
Phthalonitrile resins are an unique class of high-temperature materials having a variety of potential uses in composite matrices, films, adhesives, and electrical conductors because of their outstanding mechanical properties, excellent thermal and thermo-oxidative stability, and fire resistance, etc.
The phthalonitrile as pendant groups were easily crosslinked by further thermal treatment.
In the light of these facts, we proposed to synthesize a series of poly(aryl ether ketone) oligomers containing phthalonitrile with variable main chain length and cyano side groups by using 4,4'-dihydroxybenzophenone, 2,6-difluorobenzonitrile, and the endcapping reagent 4-nitrophthalonitrile.
Synthesis of Poly(aryl ether ketone) Oligomers Containing Phthalonitrile (PAEK-CN)
Phthalonitrile monomers or oligomers with different structures have been synthesized and used for the preparation of phthalonitrile resins (23-25).
In the light of these facts, we synthesized and characterized new fluorinated poly(amide imide)s containing pendant phthalonitrile groups starting from 4,4'-diamino-4"-(3,4-dicyanophenoxy)triphenylmethane, 1, 1,3-bis(4-aminophenoxy)benzene, and a diacid chloride containing a 6F group and imide rings.