Institut Francais Du Pe'trole

André Vioux

Alain Forestiere

Gilles Guerrero

P-Hubert Mutin

P Hubert Mutin

The invention describes materials comprising organic groups containing sulphur and phosphorous bonded together by a hydrocarbon chain and bonded via phosphorous and oxygen atoms to a mineral oxide of an element M, said materials being characterized in that they comprise M-O-M' bonds, M&#x2032;representing an element of a mineral oxide identical to or different from M, in that the ratio of the element M to the phosphorous is about 0.5: 1 to about 500:1 and in that each phosphorous atom of the phosphorous-containing groups forms at least one P&#x2014;O-M bond and/or P&#x2014;O-M&#x2032; bond. The invention also describes a process for preparing such materials.

Materials comprising organic groups containing sulphur and phosphorous bonded to a mineral oxide via oxygen atoms

The present invention relates to a composition including an organic phosphorous-containing group bonded via an oxygen atom to a metal oxide of at least one element M. Generally, the composition is essentially amorphous, and includes an essentially monomolecular layer of an organic group directly bonded to the phosphorous atom. In addition, the composition is generally essentially free of any phosphate, phosphonate or phosphinate phase of the element M. Moreover, the composition has a ratio of the element M to phosphorous of about 15:1-200:1.

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Montferrier sur Lez, France

André Vioux