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
Apparatus and method for sterilizing vessel with electron beam
Power management implementation in an optical link
Random access point (RAP) formation using intra refreshing technique in video coding
Identification of electrical grid phase information for end-points in a grid network
Health monitoring of applications in a guest partition
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming method, and image forming apparatus
  Randomly Featured Patents
Interpolymers of ethylene/.alpha.-olefins blends and profiles and gaskets made therefrom
System and method for controlling intensity of a beam of electromagnetic radiation in ellipsometers and polarimeters
Motor speed control for washing machine
Method to reduce transistor gate to source/drain overlap capacitance by incorporation of carbon
Medical procedure tool
Hydrogenated block copolymer compositions
Introducing ink into an ink cartridge
Temporal compression
Sensorless start of synchronous machine
Sutureless intraocular lens