Bp Corporation North America Inc.

Roche Vitamins Inc.

Michael M Schwartz

Jeffrey T Miller

William J Reagan

An improved process and composition are disclosed for isolation of steroids containing a 5,7-diene functionality from a sterol mixture that comprises formation of a Diels-Alder reaction product of the ster-5,7-dienol in the presence of at least a catalytic amount of an ethylenically unsaturated C -C fatty carboxylic acid.

Activation of a Diels-Alder reaction of a sterol 5,7-diene

A method for preparing a catalyst having one or more noble metals disposed in a relatively homogeneous distribution on a base which includes an inorganic refractory binder and a zeolite. The method provides for uniformly depositing noble metals on the base after it is formed, without unnecessarily displacing desirable nonframework cations, such as sodium, from the zeolite.

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Naperville, IL, United States of America

Michael M Schwartz