Rohm and Haas Company

Rohn and Haas Company

Rajiv Monohar Banavali

Bharati Dinkar Chheda

Barry Weinstein

Randall Wayne Stephens

Alfred Karl Schultz

Kim Sang Ho

Ravindranath Mukkamala

Samuel F Reed, Jr

Sudhir K Agarwal

Gene K Norris

Abraham Benderly

John Hiroshi Yamamoto

Jose Antonio Trejo

Gregory C Pierce

Guido Mazza

Guido Mazza Manari

Robert Tryon Hanlon

The present invention relates to a method for producing esters from triglycerides by using solid heterogeneous catalysts comprised of calcined calcium carbonate, particularly for obtaining biodiesel.

Catalyst for transesterification process

A method for producing a nitrone of formula (I) wherein R is a branched alkyl group having from four to thirty carbon atoms; R, R, Rand Rindependently are hydrogen or alkyl groups having from one to six carbon atoms from an imine having formula (II) 

Preparation of nitrones

A composition containing a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, and an organic marker compound.

Chemical markers

A polymeric resin comprising guanidine groups having at least one C-Ctertiary alkyl substituent.

Guanidine-substituted resin for transesterification

A method for marking a petroleum hydrocarbon, a biodiesel fuel or an ethanol fuel, by adding an organic marker compound.

A composition comprising: (i) a chelating aminocarboxylic acid-C-Camine complex; (ii) a C-Cbis(2-hydroxyethyl)amide; and (iii) a C-Cimidazoline compound.

Formulations useful as asphaltene dispersants in petroleum products

A method for monitoring degradation of lubricating oils. The method comprises steps of: (a) adding to a lubricating oil at least one compound having formula (I) wherein Rand Rindependently are hydrogen, hydroxy, OR, amino or NRR; Rand Rindependently are alkyl, aryl, aralkyl, heteroalkyl or heterocyclic; Rand Rindependently are hydrogen or alkyl; R, R, Rand Rindependently are cyano, nitro, amide, carboxyl, ester, alkyl or hydrogen; Ris alkyl, aryl, aralkyl, heteroalkyl, heterocyclic or alkanoyl; Ris hydrogen or alkyl; provided that said at least one compound of formula (I) has at least one substituent selected from among cyano, nitro, hydroxy, hydroxyalkyl, amide, carboxyl, ester and unsaturated alkyl; and (b) measuring a spectroscopic property of the oil to determine degradation of said at least one compound.

Method for monitoring degradation of lubricating oils

A method for transesterification of triglycerides, especially those containing free fatty acids, with methanol. The method uses a catalyst derived from an acidic ion exchange resin. The catalyst is contacted with a reaction mixture containing a triglyceride and methanol under conditions suitable for transesterification.

Method for transesterification of triglycerides

A method for producing MBH, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.

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A method for esterification of free fatty acids in triglycerides, with C-Caliphatic alcohols. The method uses an acidic ion exchange resin as a catalyst. The catalyst is contacted with a reaction mixture containing a triglyceride having at least 1% free fatty acids and a C-Caliphatic alcohol under conditions suitable for esterification.

Method for esterification of free fatty acids in triglycerides

A method for purification of crude glycerol, especially crude glycerol derived from biodiesel production using alkaline catalysts. The method comprises combining the crude glycerol with acid, separating a glycerol layer, and treating the glycerol layer to decolorize it.

Method for purification of glycerol from biodiesel production

A method for marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon a pyrazinoporphyrazine dye having an absorption maximum from 700 nm to 900 nm.

Pyrazinoporphyrazines as markers for liquid hydrocarbons

A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II), wherein Ris C&#x2013;Cdifunctional alkyl or C&#x2013;Cdifunctional aryl, and Rand Rindependently are hydrogen, alkyl, heterocyclic, aryl or aralkyl groups; and (b) crude oil. In addition to dispersing asphaltenes, the composition of the present invention typically also increases demulsibility, reduces viscosity, reduces sediment formation, reduces surface fouling and reduces corrosion.

Growing community of inventors

Huntingdon Valley, PA, United States of America

Rajiv Monohar Banavali