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
Hand mixer
Fluorescent proteins
Managing deduplication density
Lamp body with integrally molded heat sink
Electronic device including predicted frequency error estimation of a voltage controlled oscillator and related methods
Calibration of quadrature imbalances using wideband signals
Battery cell separator
  Randomly Featured Patents
Encoding data to enable it to be stored in a storage block that includes at least one storage failure
Removal of light impurities from caprolactam by distillation with water
Neutron and gamma radiation shielding material, structure, and process of making structure
Reciprocating engine
Circular knitting machine, particularly for producing items of clothing with three-dimensional shapes
Image forming apparatus capable of suppressing a fluctuation in an incident position of an electron beam
Implantable electrodes containing polyoxometalate anions and methods of manufacture and use
Automatic system for monitoring persons entering and leaving changing room
Process for producing crosslinked polymer particles
Excitatory amino acid receptor antagonists