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Rajiv Banavali
Ravindranath Mukkamala, Rajiv Manohar Banavali: Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil. Rohm and Haas Company, Kenneth Crimaldi, October 17, 2006: US07122112 (3 worldwide citation)

A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II), wherein R5 is C1–C70 difunctional alkyl or C6–C14 difunctional aryl, and R3and R4 independently are hydrogen, alkyl, heterocyclic, aryl or aralkyl groups; and (b) crude oil. In addition to dispersing as ...


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Rajiv Banavali
Ravindranath Mukkamala, Rajiv Manohar Banavali: Compounds containing amide and carboxyl groups as asphaltene dispersants in crude oil. Rohm And Haas Company, December 2, 2004: US20040238404-A1

A composition comprising: (a) 0.001% to 20% of at least one compound having: (i) at least one carboxyl group; (ii) at least one amide group; and (iii) at least fifteen carbon atoms; and (b) crude oil; provided that the compound is not represented by formula (I) 1 wherein R1 and R2 independently are ...


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Rajiv Banavali
Ravindranath Mukkamala, Rajiv Manohar Banavali: Oil-soluble additive compositions for lubricating oils. Rohm And Haas Company, September 26, 2002: US20020137638-A1

An oil-soluble lubricant additive composition comprising: (a) at least one compound of formula I: 1  wherein R1, R2, R3 and R4 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl; or R1 and R2, or R3 and R4, combine with the carbon atom to which they are attached to form an alkyl or alkenyl ...


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Carolyn Bertozzi, Ravindranath Mukkamala, Oing Chen, Hopin Hu, Dominique Baude: Biomimetic hydrogel materials. The Regents of the University of California, Hana Verny, April 22, 2003: US06552103 (40 worldwide citation)

Novel biomimetic hydrogel materials and methods for their preparation. Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or hydrophobic copolymerizing material selected from the group consisting of an acrylamide, methacrylamid ...


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Carolyn Bertozzi, Ravindranath Mukkamala, Qing Chen, Hopin Hu, Dominique Baude: Biomimetic hydrogel materials. The Regents of the University of California, Hana Verny, August 22, 2000: US06107365 (30 worldwide citation)

Novel biomimetic hydrogel materials and methods for their preparation. Hydrogels containing acrylamide-functionalized carbohydrate, sulfoxide, sulfide or sulfone copolymerized with a hydrophilic or hydrophobic copolymerizing material selected from the group consisting of an acrylamide, methacrylamid ...


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Ravindranath Mukkamala: Carbonyl, thiocarbonyl or imine containing compounds as asphaltene dispersants in crude oil. Rohm and Haas Company, Kenneth Crimaldi, August 29, 2006: US07097759 (5 worldwide citation)

A method for dispersing asphaltenes in a petroleum product by adding to the petroleum product 0.001% to 20% of at least one compound having formula (V) wherein R14 is C15–C21 alkyl. In addition to dispersing asphaltenes, the method of the present invention typically also increases demulsibility, red ...


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