Resources Contact Us Home
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
Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using
Monolithic widely-tunable coherent receiver
State control of remote hosts for management of distributed applications
Method and system for modularized configurable connector system for ethernet applications
Vehicle lamp component
Antenna arrangement and antenna housing
  Randomly Featured Patents
Active matrix type liquid crystal display apparatus
Rifle comprising a stock, a forearm and a barrel
Hydrogel thin film for use as a biosensor
Fabric pleater guide including a pleat former
Outer membrane vesicle (OMV) vaccine comprising N. meningitidis serogroup B outer membrane proteins
Garden hose
Process for producing a deprotected alkoxylated polyol
ECL circuit with low voltage/fast pull-down
Keyboard assembly including circuit membrane switch array
Network system, network control method, and program