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
Illumination apparatus
Onium salt-containing polymer
Image manipulating system and method
Wireless communication apparatus, a method of wireless communication, and a program for wireless communication
Battery loading and unloading mechanism
Multibranched polymer and method for producing the same
Image forming apparatus detecting color patterns and generating interleaf images at predetermined position
  Randomly Featured Patents
UV light sensitive die-pac for securing semiconductor dies during transport
Eight speed dual clutch transmission
Program identification using a portable communication device
Cowl latching system which simplifies the cowl removing process
Game of strategy directed to entrapment of opponent
Tray for portable propane torch, tools and accessories
Firearm having a handle assembly for charging and forward assist
Temperature sensitive water supply shut-off system
Dynamic type semiconductor memory device
Hesperidin and hesperetin as 3-hydroxy-3-methylglutaryl CoA (HMG-CoA) reductase inhibitor