1
Jean-luc Dubois
Guillaume Le, Jean Laurent Pradel, Samuel Devisme, Thomas Roussel, Jean Luc Dubois: Polyolefin derived from renewable resources, and method for producing same. Arkema France, Buchanan Ingersoll & Rooney, December 25, 2012: US08338549

The invention relates to a polymer obtained by polymerizing olefins having 6 to 9 carbon atoms and partially derived from renewable resources. In particular, the polymer according to the invention can be derived from vegetable oil or animal fat. The invention also relates to the method for producing ...


2
Jean-luc Dubois
Samuel Devisme, Fabrice R Chop, Jean Laurent Pradel, Guillaume Le, Thomas Roussel, Jean Luc Dubois: Composition containing polypropylene and/or a propylene copolymer obtained from renewable materials, and uses thereof. Arkema France, December 15, 2011: US20110305900-A1

The present application relates to a method for manufacturing a propylene polymer, including: a) fermenting and optionally purifying first renewable materials to produce an alcohol or an alcohol mixture, the alcohol or alcohol mixture including at least isopropanol and/or at least a mixture of ethan ...


3
Jean-luc Dubois
Guillaume Le, Jean Laurent Pradel, Samuel Devisme, Thomas Roussel, Jean Luc Dubois: Polyolefin derived from renewable resources, and method for producing same. August 11, 2011: US20110196114-A1

The invention relates to a polymer obtained by polymerizing olefins having 6 to 9 carbon atoms and partially derived from renewable resources. In particular, the polymer according to the invention can be derived from vegetable oil or animal fat. The invention also relates to the method for producing ...


4
Jean Laurent Pradel: Grafted isotactic polypropylene obtained by metallocene catalysis. Atofina, Millen White Zelano & Branigan P C, June 15, 2004: US06750288 (18 worldwide citation)

The present invention relates to an isotactic polypropylene obtained by metallocene catalysis, onto which is grafted a functional monomer.


5
Jean Laurent Pradel: Grafted isotactic polypropylene obtained by metallocene catalysis. ARKEMA, Millen White Zelano & Branigan P C, May 10, 2005: US06890661 (10 worldwide citation)

The present invention relates to an isotactic polypropylene obtained by metallocene catalysis, onto which is grafted a functional monomer. The invention also relates to a composition which may form part of the composition of a coextrusion binder. This composition according to the invention comprises ...


6
Jean Laurent Pradel: Composition based on isotactic polypropylene obtained by metallocene catalysis and on grafted isotactic polypropylene obtained by Ziegler-Natta catalysis. Atofina, Hunton & Williams, April 26, 2005: US06884846 (10 worldwide citation)

The present invention relates to a composition comprising isotactic polypropylene homo- or copolymer obtained by metallocene catalysis (A), abbreviated to miPP, and isotactic polypropylene homo- or copolymer obtained by Ziegler-Natta catalysis (B), abbreviated to zniPP, and grafted. It also relates ...


7
Jean Laurent Pradel, Patrice Robert: Grafted syndiotactic polypropylene and coextruding binders based on syndiotactic polypropylene. Arkema, Millen White Zelano & Branigan P C, June 27, 2006: US07067196 (7 worldwide citation)

A coextrusion binder and a multilayer structure containing the binding wherein the binder contains a composition comprising (I) syndiotactic polypropylene and (II) at least one polymer being: (A), a polyethylene or a copolymer of ethylene, (B), any of (B1) isotactic polypropylene homopolymer of copo ...


8
Jean Laurent Pradel: Composition based on isotactic polypropylene obtained by metallocene catalysis and on grafted isotactic polypropylene obtained by ziegler-natta catalysis. Arkema France, Hunton & Williams, March 31, 2009: US07510775 (2 worldwide citation)

The present invention relates to a composition comprising isotactic polypropylene homo- or copolymer obtained by metallocene catalysis (A), abbreviated to miPP, and isotactic polypropylene homo- or copolymer obtained by Ziegler-Natta catalysis (B), abbreviated to zniPP, and grafted. It also relates ...


9
Josée Auvray, Jean Jacques Flat, Jean Laurent Pradel, Philippe Renouard: Imidazole derivative-catalyzed polyurethane formulations based on hydroxylated polybutadiene. Elf Atochem, Smith Gambrell & Russell, June 3, 2003: US06572729 (2 worldwide citation)

Polyurethane formulations based on hydroxylated polybutadiene are catalyzed by an N-substituted imidazole derivative. This type of catalysis advantageously replaces the conventional catalysts based on mercury salt. The catalysis does not pose an environmental problem and allows a particular increase ...


10
Jean Laurent Pradel, Pierre Nogues, Christophe Loret: Method for hydrogenation of polymers in dispersed medium. Arkema, Smith Gambrell & Russell, December 12, 2006: US07148292 (1 worldwide citation)

The invention concerns a method for hydrogenation of unsaturated polymers in dispersed medium based on an oxidation-reduction system containing hydrazine, an oxidant such as a peroxide and optionally a carboxylic acid. The hydrogenation rate can reach 100% in certain conditions.



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