1
Carlo Venturello, Enzo Alneri, Giulio Lana: Process for catalytically epoxidizing olefin with hydrogen peroxide. Instituto Guido Donegani S p A, Morgan & Finnegan, December 28, 1993: US05274140 (22 worldwide citation)

There is disclosed a new process for the epoxidization of olefins by reaction with hydrogen peroxide according to the double phase technique with "onium" salts, characterized in that the reaction is conducted in a liquid aqueous-organic biphasic system consisting of:


2
Kwan Yue A Jen, Terence Moran: Melt transesterification process for the production of polycarbonates. Instituto Guido Donegani, Enichem America, Oblon Spivak McClelland Maier & Neustadt, June 22, 1993: US05221761 (14 worldwide citation)

A melt transesterification process for the production of polycarbonates, wherein at least one bis(aryl)carbonate is reacted with at least one dihydric phenol in the melted state, in the presence of a transesterification catalyst comprising at least one heterocyclic borate salt of the formula:


3
J Brian Caldwell: Sol-gel method for the preparation of monolithic multicomponent oxide glasses. Instituto Guido Donegani S p A, Enichem S p A, Oblon Spivak McClelland Maier & Neustadt, April 27, 1993: US05206189 (13 worldwide citation)

An improved method for the production of a monolithic multicomponent oxide glass is achieved by forming an oxide host gel by a sol-gel process, placing the host gel in an aqueous solution of a salt of at least one metal selected from the group consisting of Li, Na, K, Rb, Cs, Sc, Y, La, Ce, Pr, Nd, ...


4
Francesco Gementi, Loris Sogli, Raffaele Ungarelli: Process for producing a silane or siloxane compound containing a cycloalkyl ring. Instituto Guido Donegani S p A, Bryan Cave McPheeters & McRoberts, September 11, 1990: US04956484 (6 worldwide citation)

A process for producing a silane or siloxane compound containing at least one cycloalkyl ring by hydrogenation of a corresponding derivative containing at least one aromatic ring in the presence of a Raney nickel catalyst modified with chromium.


5
Carlo Venturello, Mario Gambaro, Marco Ricci: Method for the preparation of ketones. Instituto Guido Donegani S p A, Consiglio Nazionale Delle Ricerche, Stiefel Gross & Kurland, June 28, 1988: US04754073 (2 worldwide citation)

Method for the preparation of ketones, by means of oxydation of the corresponding secondary alcohols, characterized in that said alcohols are catalytically oxidized by H.sub.2 O.sub.2 inside a two-phase system comprising: