Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ligand exchange process for producing alkyl diaryl phosphine rhodium carbonyl hydrides










Image Number 3 for United States Patent #4687866.

Compositions of matter are disclosed which are highly useful in hydroformylation processes. The compositions are non-charged, non-chelated bis- and tris-(alkyl diaryl phosphine) rhodium carbonyl hydrides. The substituents of the alkyl group include heteroorganic radicals containing silane, silicone, ether, ester, keto and hydroxy oxygen, phosphine oxide and phosphorus ester phosphorus, amine, amide, amine oxide and heterocyclic nitrogen groups.These compositions are highly stable and selective catalysts for the hydroformylation of olefins under certain conditions. The disclosed catalyst systems contain a large excess of phosphine ligand and employ alpha-olefin plus synthesis gas reactant mixtures having a high H.sub.2 /CO ratio at relatively low pressures. They produce mostly aldehydes derived from terminal attack on the alpha-olefin reactant. In the case of low olefins, such as butene-1, the products can be advantageously removed in a continuous manner, as distillate components from a ligand reaction mixture kept at an elevated temperature and continuously fed by an appropriate mixture of the reactants.








 
 
  Recently Added Patents
Glow in the dark swim goggle frame and band
Curable sublimation marking material and sublimation transfer process using same
Ventilated vacuum commutation structure
Process for producing .beta.-sialon fluorescent material
Semiconductor device
Promoting content
Method to alter silicide properties using GCIB treatment
  Randomly Featured Patents
USB isochronous data transfer for a host based laser printer
In vivo unnatural amino acid expression in the methylotrophic yeast Pichia pastoris
Color masking parameter determining apparatus
Styryl derivatives and electrophotographic photoconductor comprising one styryl derivative
Vial adaptor for regulating pressure
Apparatus for cutting glass plate
Frame and data pattern structure for multi-carrier systems
Network monitoring system and method
Remote control unit
Reactive blue dye containing a vinyl sulphone group