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
Stretchable elastic laminate having increased CD elongation zones and method of production
Communication device and two-dimensional communication system using the same
Portable reading device with mode processing
Catalysts for polyurethane coating compounds
Interactive program guide systems and processes
Multiple CQI feedback for cellular networks
Adaptive switch mode LED system
  Randomly Featured Patents
Cutter-bit assemblies
Throttle valve
Process for perishing waste rubber materials, especially worn out motor vehicle rubber tires by recovering their components for industrial purposes
Apparatus for examination and treating an eye
Method and structure for improved alignment tolerance in multiple, singularized plugs
Adjustable rotational transmission assembly
Yarn storage feeders
Electric motor control apparatus
Systems and methods for using data archiving to expedite server migration
UV-curable compositions