Synthesis of tert‐butyl‐substituted poly (ether ketone) by nickel‐catalyzed coupling polymerization of aromatic dichloride

Abstract

tert‐Butyl substituted poly (aryl ether ketone)s with relatively high molecular weights were prepared by the Ni‐catalyzed polymerization of tert‐butyl substituted aromatic dichlorides containing ether ketone unit. These polymers were amorphous and soluble in common organic solvents, such as THF, dichloromethane, and chloroform. De‐tert‐butylation of the polymer by the treatment of trifluoromethanesulfonic acid in the presence of toluene proceeded smoothly and produced crystalline poly (aryl ether ketone). © 1994 John Wiley & Sons, Inc.

Soluble Polyimides from a New Dianhydride: 5′‐tert‐Butyl‐m‐terphenyl‐3,4,3″,4″‐tetracarboxylic Acid Dianhydride

“…The resulting polyimides exhibit high molecular weights (high inherent viscosity), and a combination of desirable properties, such as good solubility in aprotic amide solvents and cresols, high glass transition temperatures (up to 320 8C), high thermal resistance, film-forming capability and good mechanical properties. groups that have been used to prepare aromatic polyamides, [8][9][10] polyesters, [11] polyaryl ketones, [12,13] and even aromatic polyimides [14,15] of improved processibility.…”

Synthesis and characterization of new dicyanate monomers. A way to obtain fully aromatic crosslinked poly(ether ketone)s

“…Temperatures of 1% weight loss are always above 300°C, and temperatures of 5% weight loss are well above 350°C (Table III). Compared to the data found in the literature, the thermal resistance of these polymers is similar to commercial cyanate resins 36 and slightly lower than that of linear PAEK's, 12,37,38 probably due to a lower intrinsic resistance of the triazine ring respect to the benzene ring. Moreover, the char residue at 700°C was very high, around 60%.…”

Preparation and characterization of the soluble NLO polyarylates with enhanced electro-optic properties

“…For this reason, the traditional po lyarylates are hardly used in the area of NLO materials. But if bulky side groups were attached to the polymer backbones, or flexible segments were introduced into the polymer backbones, the solubility can be greatly improved [21,22]. These two methods were both used in this article.…”