The present invention relates to a method for the production of chromoplastid carotenoids that can be isolated from fruits. The procedure of the invention allows to selectively isolate, on the basis of the size (Size Exclusion Chromatography) and in pure form, the carotenoid in the form of regularly shaped and sized aggregates. The process includes the following steps: i) production, in suspension, of homogeneous fragments of the chromoplastidial membranes from the fruits; ii) solution isolation of the membrane components by solubilization with detergents; iii) selective and high-purity isolation of the carotenoid in the form of regular paracrystalline aggregates by a screening technique such as size exclusion chromatography (SECSize Exclusion Chromatography).

The present invention relates to a method for the production of chromoplastid carotenoids that can be isolated from fruits. The procedure of the invention allows to selectively isolate, on the basis of the size (Size Exclusion Chromatography) and in pure form, the carotenoid in the form of regularly shaped and sized aggregates. The process includes the following steps: i) production, in suspension, of homogeneous fragments of the chromoplastidial membranes from the fruits; ii) solution isolation of the membrane components by solubilization with detergents; iii) selective and high-purity isolation of the carotenoid in the form of regular paracrystalline aggregates by a screening technique such as size exclusion chromatography (SECSize Exclusion Chromatography).

The invention provides a process for hydroformylation of diisobutene and a C4 to C7 olefin in a common reaction zone. The hydroformylation is carried out with synthesis gas in the presence of a homogeneous catalyst system that comprises at least Co or Rh and optionally a phosphorus-containing ligand.

The present invention describes a process for preparing a poly(aryl ether ketone) by reacting a nucleophile with 4,4-difluorobenzophenone (4,4-DFBP) that is improved through the use of 4,4-DFBP that meets one or more particular purity conditions. Also described are improved poly(aryl ether ketone) produced using the invention 4,4-DFBP. Amounts of 2,4-difluorobenzophenone (2,4-DFBP), 4-monofluorobenzophenone (4-FBP), chlorine, and monochloromonofluorobenzophenone in 4,4-DFBP are discussed.

The present invention describes a process for preparing a poly(aryl ether ketone) by reacting a nucleophile with 4,4-difluorobenzophenone (4,4-DFBP) that is improved through the use of 4,4-DFBP that meets one or more particular purity conditions. Also described are improved poly(aryl ether ketone) produced using the invention 4,4-DFBP. Amounts of 2,4-difluorobenzophenone (2,4-DFBP), 4-monofluorobenzophenone (4-FBP), chlorine, and monochloromonofluorobenzophenone in 4,4-DFBP are discussed.

A process for production of acrylic acid includes preparing a product gas mixture by a catalytic gas-phase oxidation of a C.sub.3 precursor; cooling and contacting the cooled product gas mixture in an absorption column having at least two cooling loops in countercurrent with an absorbent to obtain an absorbate A, containing the absorbent and absorbed acrylic acid; condensing a high boiler fraction of the product gas mixture in a first cooling loop; condensing a low boiler fraction of the product gas mixture in a second cooling loop; maintaining a temperature of the absorbate A in the second cooling loop at a value of at least 56 C.; removing an acid water stream comprising glyoxal from the absorption column at a side take-off located above the second cooling loop; and removing a stream F of absorbate A from the absorption column at a side take-off, located at a height of the absorption column between the first cooling loop and the second cooling loop.

Methods and devices are disclosed for selective photo-destruction of one chiral enantiomer of a compound using nanostructures by enhancing differential absorption of circularly polarized light by the one chiral enantiomer. Methods and devices are disclosed for selective enrichment of one chiral enantiomer of a compound using nanostructures by enhancing differential absorption of circularly polarized light by the one chiral enantiomer. The nanostructures support optical frequency electric resonances and optical frequency magnetic resonances.

A multi-reactor hydroformylation process wherein a common product-catalyst separation zone is employed.

A multi-reactor hydroformylation process wherein a common product-catalyst separation zone is employed.

A multi-reaction train hydroformylation process wherein a common product-catalyst separation zone is employed.