Ethylene and carbon monoxide copolymerization catalyzed by supported palladium catalyst

Synthesis of poly(carbon monoxide-co-ethylene-co-propylene) in the presence of supported palladium catalysts

“…As was shown in [9,10], the yield of the CO-eth ylene copolymer (CE) synthesized in the presence of supported catalysts [Pd(dppp)(TsO) 2 ]/support (poly mer or silica gel) in heptane or toluene can be com pared with the yield of the copolymer prepared with a similar homogeneous system in methanol. A change in reaction conditions and the use of a hydrocarbon solu tion make it possible to affect the yield of polymeric products owing to better solubility of monomers in heptane and toluene than that in methanol, which is commonly used in homogeneous systems.…”

Carbon monoxide–ethene alternating copolymerization catalyzed by [PdCl2(dppf)] in H2O–HCOOH [dppf=1,1′-bis(diphenylphosphino)ferrocene]

“…It should be said that the experimental set up did not allow to analyze the initial rates during the first 10 min and to establish whether there was an induction period. With preformed [Pd(TsO) 2 (dppp)], after an initial period, a constant copolymerization rate was observed [43]. Factors that cause a variation of the rate with time have been reported in several papers [26,28,[43][44][45].…”

“…With preformed [Pd(TsO) 2 (dppp)], after an initial period, a constant copolymerization rate was observed [43]. Factors that cause a variation of the rate with time have been reported in several papers [26,28,[43][44][45]. We did not further investigate this aspect because our main goal was to find out whether [Pd(dppf)Cl 2 ] in H 2 O-HCOOH as a solvent could produce a high LVN copolymer with a good yield per gram of Pd (see below the results shown in Fig.…”

Morphology control of ethylene/CO copolymer with a novel inverse suspension polymerization

“…In the production of polyolefins using slurry and gas-phase processes, morphology control is achieved by employing supported catalysts. While there are a few reports on the synthesis of PKs using supported catalytic systems, the observed product yields are very low, such as 1-2 kg/g-catalyst [7][8][9]. Although the typical free radical suspension polymerization method produces well-controlled polymer beads, no published data is available on the inverse suspension process for producing PK.…”