Synthesis and properties of copolymers of ethylene/carbon monoxide with styrene/carbon monoxide

Abstract

The terpolymerization of ethylene, styrene, and carbon monoxide was accomplished by two different palladium‐based catalysts: a phosphine‐based ligand system and a nitrogen‐based ligand system. The range of possible compositions and the composition dependence of the properties of the resulting polymers were determined. These polymers were essentially carbon monoxide versions of the ethylene styrene interpolymers recently presented by Dow. A comparison between the two families of polymers is attempted. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 752–757, 2000

Microwave-Enhanced Carbonylative Generation of Indanones and 3-Acylaminoindanones

“…GC−MS and 1 H NMR analysis on the reaction mixtures proved that dehalogenated starting materials were always formed, but only in small amounts. We therefore suspect that the moderate yields obtained were a consequence of competing polymerization of the starting styrenes 4 at the high reaction temperature (170 °C) 2 Palladium-Catalyzed and Microwave Heated Carbonylative Cyclization of o -Chlorostyrenes a Reaction conditions: 1.0 mmol of 4 , 5 mol % of palladacycle, 10 mol % of ( t -Bu) 3 PHBF 4 , 0.5 equiv of Mo(CO) 6 , 1.0 equiv of n -Bu 4 NCl, 2.0 equiv of pyridine, and 2.0 mL of dioxane at 170 °C; microwave heating for 30 min in a sealed vessel.…”

Polyketones as alternating copolymers of carbon monoxide

“…The copolymer containing 27 mol.% of the 7CH 2 CHPhCO7 units has T g = 37 8C, a rupture resistance (s p ) of 62 MPa, and a relative elongation at rupture (e) of 270%. 170 It was found that by varying the nature of the aryl substituent at the phosphorus atom in (S)- New homogeneous bismethoxycarbonyl complexes [Pd(L-L). .…”

Terpolymerization of propene and ethene with carbon monoxide catalyzed by [PdCl2(dppf)] in HCOOH–H2O as a solvent [dppf = 1,1′-bis(diphenylphosphino)ferrocene]

“…In contrast to the intensive efforts devoted to ethene (E)-carbon monoxide (ECO) copolymerization, much less has been reported on terpolymerization of two olefins with carbon monoxide [1][2][3][4][5][6][7][8][9][10][11][12], although industries have shown more interest for terpolymers than for copolymers, as documented by the high number of patents in this field. This is because the ECO copolymer is a highly crystalline material with high melting point (T m ), whereas the terpolymers have lower melting points, making them more easily processable [13][14][15][16][17][18][19].…”