The Standard Oil Company

Whatman Gmbh

Dean T Tsou

James D Burrington

Marc W Blachman

Robert K Grasselli

Mark C Cesa

Manuel M Pacheco

Sandra L Denman

Elizabeth A Maher

Oksana Penezina

The invention provides composite porous membranes comprising a porous hydrophobic substrate coated with difunctional surface-modifying molecules. The difunctional surface-modifying molecules provide a hydrophilic surface without forming branches of interconnected polymer molecules in the pores. The invention also provides a method for making composite porous membranes, such as a composite hydrophilic membrane with reduced concentration of surface modifying molecules required to coat a hydrophobic substrate.

Porous composite membrane and method for making the same

Hydrophilic polymeric phase inversion membrane

A facilitated liquid membrane for the separation of olefins from a gaseous feed stream comprises a porous support structure (10, 15) and a liquid membrane which comprises an aqueous solution containing a metal salt facilitator capable of coordinating with olefin gases, and an alkyl carbonate co-solvent. A process for the separation of olefins from gaseous feed streams comprises the steps of passing a gaseous feed stream over one side of a facilitated liquid membrane according to the present invention and collecting the olefins on the other side of the membrane.

Facilitated liquid membranes for olefin/paraffin gas separations and

Erasable optical memories for storing information are prepared from organic materials having two stable crystalline forms. Each crystalline form has at least one different optical characteristic and the materials are reversibly thermally convertible between the crystalline forms. Information is recorded or erased with a laser beam that heats a film of the organic material in a local area to change the crystalline form. Information may also be recorded or erased by melting a local area or all of the film and quickly cooling it to restore the original crystalline form. Examples of such organic compounds are biaryl compounds, such as binaphthyls, bianthryls and biquinolyls.

Organic optical information storage medium employing crystalline

A first row transition metal catalyzed procedure for the production of adiponitrile from acrylonitrile comprising mixing a first row transition metal salt, acrylonitrile, metallic reducing agent and solvent, heating the solution, and adding a quench solution to the mixture comprising a proton donor material having a 0&lt;pk.sub.a &lt;12 and an organic amide solvent for the proton donor material. Preferably, an organic ligand is added to the solution prior to heating and adding the quench solution.

Method of producing adiponitrile

Disclosed is the liquid phase reaction of the acrylonitrile with ammonia in the presence of a large amount of a polar solvent having a high dielectric constant.

Method of making tri-(.beta.-cyanoethyl)amine

Catalyst composition and process are provided for the dimerization of acrylic compounds. An acrylic compound may be dimerized in the liquid phase by contacting an acrylic compound with a catalyst in the presence of hydrogen, at a pressure of least about 1 psi and a temperature of at least about 50.degree. C., wherein the catalyst comprises an organic polymer catalyst support, trivalent pendant atoms covalently bonded to the support, ruthenium complexed with said trivalent pendant atoms, and a second metal which is at least one of Pb and the Group VIII metals other than Ru and Pd and is disposed on the organic polymer catalyst support.

Growing community of inventors

Solon, OH, United States of America

Dean T Tsou