Elf Atochem S.a.

Norsolor

Energy Biosystems Corporation

Charles Hazan

Patrice Hurtel

Daniel J Monticello

Norbert Richard

Jean-Michel Colin

Steven W Johnson

Francois De Champs

Jean-Michel Pau

The present invention relates to the manufacture of a dialkylaminoalkyl (meth)acrylate by transesterification of methyl or ethyl (meth)acrylate with an amino alcohol. The transesterification catalyst is chosen from tetrabutyl, tetraethyl and tetra(2-ethylhexyl) titanates. The reaction is carried out in a stirred reactor at 90-120&deg; C., after which the crude reaction mixture is sent to a tailing column (C ), the flow from the top of this column is sent to a topping column (C ) and the flow from the bottom of this column si then sent to a final rectification column (C ). A dialkylaminoalkyl (meth)acrylate of high purity is obtained in this way.

Process for the continuous manufacturing of dialkylaminoalkyl (METH) acrylates having a critical order of steps

The present invention relates to a method for the desulfurization of a fossil fuel containing one or more organosulfur compounds. In one embodiment, the method comprises the steps of (1) contacting the fossil fuel with a biocatalyst capable of converting the organosulfur compound to an oxyorganosulfur compound which is separable from the fossil fuel; and (2) separating the oxyorganosulfur compound from the fossil fuel. The oxyorganosulfur compound can then be isolated, discarded or further processed, for example, via desulfurization by a biocatalyzed process or an abiotic process, such as hydrodesulfurization.

Conversion of organosulfur compounds to oxyorganosulfur compounds for

Process for the manufacture of dialkylaminoalkyl (meth)acrylates (I) of formula:

Process for the manufacture of dialkylaminoalkyl (meth)acrylates

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Paris, France

Charles Hazan