Patents by Inventor Pascal Steffanut
Pascal Steffanut has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11767413Abstract: The present invention relates to a composition comprising one or more (co)polymers and one or more phosphonite compounds that contain cardanol moieties. Moreover, the present invention also refers to the use of the phosphonite compounds as process stabilizers, in particular refers to the use of such compounds for stabilizing and/or reducing the Yellowness Index of a (co)polymer composition exposed to heat and/or mechanical stress.Type: GrantFiled: February 20, 2020Date of Patent: September 26, 2023Assignee: Clariant International LtdInventors: Pascal Steffanut, Stephane Bellemin-Laponnaz, Damien Bissessar, Thierry Achard
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Publication number: 20220135771Abstract: The present invention relates to a composition comprising one or more (co)polymers and one or more phosphonite compounds that contain cardanol moieties. Moreover, the present invention also refers to the use of the phosphonite compounds as process stabilizers, in particular refers to the use of such compounds for stabilizing and/or reducing the Yellowness Index of a (co)polymer composition exposed to heat and/or mechanical stress.Type: ApplicationFiled: February 20, 2020Publication date: May 5, 2022Applicant: CLARIANT INTERNATIONAL LTDInventors: Pascal STEFFANUT, Stephane BELLEMIN-LAPONNAZ, Damien BISSESSAR, Thierry ACHARD
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Publication number: 20210261753Abstract: The invention relates to a composition comprising one or more polymers as component A and one or more diphenylphosphino compounds, in particular diphenylphosphino (meth)acrylate or (meth)acrylamide based compounds, as component B. Further, the present invention relates to the use of such diphenylphosphino compounds for stabilizing a polymer composition with respect to exposure to heat and/or mechanical stress during processing.Type: ApplicationFiled: June 21, 2019Publication date: August 26, 2021Applicant: Clariant International LtdInventors: Damien BISSESSAR, Stephane Bellemin LAPONNAZ, Pascal STEFFANUT
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Publication number: 20210253611Abstract: The present invention relates to tetra-nuclear neutral copper (I) complexes that have a cubane-like structure, wherein said complexes further comprise diarylphosphine ligands which are bonded via phosphorus atoms. Furthermore, the present invention refers to methods for generating such copper (I) complex and to uses thereof. The present invention further relates to cubane-like conjugates that comprise moiety of the copper (I) complexes of the invention. Formula (A), each L is independently from each other an optionally substituted diary lphosphine residue of Formula (A1): PHSr2 (A1).Type: ApplicationFiled: June 21, 2019Publication date: August 19, 2021Applicant: Clariant International LtdInventors: Damien BISSESSAR, Stephane BELLEMIN LAPONNAZ, Pascal STEFFANUT
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Publication number: 20210214491Abstract: A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either (i) at least one co-catalyst A, or (ii) at least one co-catalyst Band at least one co-catalyst C, or (iii) a combination thereof, and wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Applicant: CLARIANT PLASTICS & COATINGS LTDInventors: Pascal STEFFANUT, Mohamed SIDQI, Ernesto DONGIOVANNI, Jerome ABRAHMI
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Publication number: 20210159432Abstract: The invention relates to tetra-nuclear neutral copper (I) complexes of Formula (A) that have a cubane-like structure, wherein said complexes comprise phosphine ligands which bear one or more aldehyde or ester groups. Furthermore, the present invention refers to methods for generating such copper (I) complexes of Formula (A) and to uses thereof. Each L is independently from each other a ligand that has a structure of Formula (A1): P(Ar)m(CHR2-CHR1-CO—Y-Rx)n.Type: ApplicationFiled: June 21, 2019Publication date: May 27, 2021Applicant: Clariant International LtdInventors: Damien BISSESSAR, Stephane BELLEMIN LAPONNAZ, Pascal STEFFANUT
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Patent number: 10982045Abstract: A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either (i) at least one co-catalyst A, or (ii) at least one co-catalyst B and at least one co-catalyst C, or (iii) a combination thereof, and wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.Type: GrantFiled: September 2, 2015Date of Patent: April 20, 2021Assignee: Clariant Plastics & Coatings LtdInventors: Pascal Steffanut, Mohamed Sidqi, Ernesto Dongiovanni, Jerome Abrahmi
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Patent number: 10920069Abstract: The present invention relates to the use of an additive composition for the preparation of polycondensation polymers wherein the additive combination is present in the polycondensation reaction and wherein the additive combination comprises one or more compounds of the formula (A) wherein R11, R12, R13, R14, R15, R16, R17, and R18 are independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl, linear or branched pentyl, linear or branched hexyl, linear or branched heptyl, linear or branched octyl or linear and branched nonyl groups, and R21 and R22 are independently selected from the group consisting of hydrogen, methyl, O(C1-C6-Acyl) and O—R3, wherein R3 is selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.Type: GrantFiled: June 12, 2017Date of Patent: February 16, 2021Assignee: Clariant Plastics & Coatings LtdInventors: Pascal Steffanut, Mohamed Sidqi, Ernesto Dongiovanni, Jerome Abrahmi
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Patent number: 10745353Abstract: The invention relates to a compound of formula (I), characterised by the characteristic signals in the X-ray diffraction powder pattern measured with Cu Kalpha radiation (0.154 nm) at a 2-theta angle of 15.0 and 22.7 with a high intensity, and of 5.0, 11.3, 18.9, 20.8, 21.6 and 23.6 with a medium intensity, as well as to a method for producing the compound of formula (I) by reacting at least one isophthalic acid diester of formula (II) where R1 and R2 are the same or different and stand for an aliphatic group, with two equivalents 4-amino-2,2,6,6-tetramethylpiperidine, in the presence of at least one catalyst from the group of metal alcoholates and at a reaction temperature of between 50 and 150° C.Type: GrantFiled: May 31, 2016Date of Patent: August 18, 2020Assignee: Clariant Plastics & Coatings LtdInventors: Mike Sahl, Eduard Zeisberger, Matthias Zaeh, Ottmar Schacker, Pascal Steffanut
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Publication number: 20190161609Abstract: The present invention relates to the use of an additive composition for the preparation of polycondensation polymers wherein the additive combination is present in the polycondensation reaction and wherein the additive combination comprises one or more compounds of the formula (A) wherein R11, R12, R13, R14, R15, R16, R17, and R18 are independently selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.-butyl, linear or branched pentyl, linear or branched hexyl, linear or branched heptyl, linear or branched octyl or linear and branched nonyl groups, and R21 and R22 are independently selected from the group consisting of hydrogen, methyl, O(C1-C6-Acyl) and O—R3, wherein R3 is selected from the group consisting of methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert.Type: ApplicationFiled: June 12, 2017Publication date: May 30, 2019Applicant: CLARIANT PLASTICS & COATINGS LTDInventors: Pascal STEFFANUT, Mohamed SIDQI, Ernesto DONGIOVANNI, Jerome ABRAHMI
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Publication number: 20180194727Abstract: The invention relates to a compound of formula (I), characterised by the characteristic signals in the X-ray diffraction powder pattern measured with Cu Kalpha radiation (0.154 nm) at a 2-theta angle of 15.0 and 22.7 with a high intensity, and of 5.0, 11.3, 18.9, 20.8, 21.6 and 23.6 with a medium intensity, as well as to a method for producing the compound of formula (I) by reacting at least one isophthalic acid diester of formula (II) where R1 and R2 are the same or different and stand for an aliphatic group, with two equivalents 4-amino-2,2,6,6-tetramethylpiperidine, in the presence of at least one catalyst from the group of metal alcoholates and at a reaction temperature of between 50 and 150° C.Type: ApplicationFiled: May 31, 2016Publication date: July 12, 2018Applicant: CLARIANT PLASTICS & COATINGS LTDInventors: Mike SAHL, Eduard ZEISSBERGER, Matthias ZAEH, Ottmar SCHACKER, Pascal STEFFANUT
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Publication number: 20170298224Abstract: The invention relates to the use of an additive as oxygen scavenger in a plastic material, wherein (a) the plastic material is a polyester, a polyolefin, a polyolefin copolymer or a polystyrene, and the additive (b) is a light stabilizer and optionally a transition metal compound.Type: ApplicationFiled: March 5, 2015Publication date: October 19, 2017Applicants: CLARIANT INTERNATIONAL LTD., Clariant Masterbatches (Italia) SpAInventors: Flavio FAVA, Pascal STEFFANUT, Angelica MARSON
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Publication number: 20170283549Abstract: A catalyst composition for a polyester manufacturing process, comprising a titanium catalyst and/or an antimony catalyst as main catalyst, and either (i) at least one co-catalyst A, or (ii) at least one co-catalyst B and at least one co-catalyst C, or (iii) a combination thereof, and wherein co-catalyst A is selected from the group consisting of a metal salt of an alkyl or an aryl phosphinic acid, or a metal salt of an alkyl or aryl diphosphinic acid, or a combination thereof, and co-catalyst B is selected from the group consisting of an alkyl or aryl phosphinic acid, an alkyl or aryl diphosphinic acid a combination thereof, and co-catalyst C selected from the group of a metal salt, a metal hydroxide or a metal organyl compound.Type: ApplicationFiled: September 2, 2015Publication date: October 5, 2017Applicant: CLARIANT PLASTICS & COATINGS LTDInventors: Pascal STEFFANUT, Mohamed SIDQI, Ernesto DONGIOVANNI, Jerome ABRAHMI
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Publication number: 20170101522Abstract: The invention relates to use of an additive as oxygen barrier in a plastic material wherein (a) the plastic material is a polyolefin, a polyolefin copolymer or a polystyrene, and the additive is (b) and optionally (c): (b) a compound of formula (I); wherein Ra represents C7-C20 alkyl, C6-C10 aryl, C4-C10 heteroaryl, wherein the heteroatoms are N, O and/or S, (C2-C6)-alkenylen-(C6-C10) aryl, C1-C6-alkylen-C6-C10-aryl, the aryl and heteroaryl radicals optionally being substituted by: hydroxyl, C1-C6-alkyl, C1-C6 alkoxyl, C6-C10 aryloxy, halogen, cyano, nitro, C6-C10-aryl, di(C1-C6)alkylamino, (C1-C6)alkylthio, C6-C10-arylthio, ?O, ?S, SO3H, SO2NR1R2, CO2R3, CONR1R2, NHCOR4, CO—C6-C10-aryl or a combination thereof, wherein R1, R2, R3, R4 are the same or different and independently represent hydrogen or Rb represents a group selected from the moieties of formula (II), (III), (IV), (V), (VI) and (VII); wherein each Rc can be the same or different and independently represents hydrogen, C1-C20Type: ApplicationFiled: April 13, 2015Publication date: April 13, 2017Applicants: CLARIANT INTERNATIONAL LTD., Clariant Masterbatches (Italia) SpAInventors: Antonello DESCORTES, Pascal STEFFANUT, Angelica MARSON, Flavio FAVA, Thierry MULLER
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Publication number: 20150240052Abstract: The invention relates to the use of an additive as oxygen scavenger in a plastic material, wherein (a) the plastic material is a polyester, a polyolefin, a polyolefin copolymer or a polystyrene, and the additive (b) is a light stabilizer and optionally a transition metal compound.Type: ApplicationFiled: September 11, 2013Publication date: August 27, 2015Applicants: CLARIANT MASTERBATCHES (ITALIA) SPA, Clariant Finance (BVI) LimitedInventors: 'Flavio Fava, Angelica Marson, Pascal Steffanut, Laure Johann
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Patent number: 8815755Abstract: The instant invention relates to polydiorganosiloxane oils having branched carbamate functions, their preparation and their use as softeners in the textile industry.Type: GrantFiled: June 12, 2009Date of Patent: August 26, 2014Assignee: Clariant Finance (BVI) LimitedInventor: Pascal Steffanut
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Publication number: 20130281653Abstract: This invention is reporting new N-heterocyclic carbene based zirconium (or hafnium) complexes and their uses as catalysts for the lactones ring opening polymerization. These new catalysts are robust and versatile and exert control over polymer molecular weight and/or stereochemistry and exhibit high reactivity (cf. for low temperature applications). In particular the new catalysts show both enhanced activity and at the same time a better selectivity than the catalysts employed by the prior art.Type: ApplicationFiled: December 5, 2011Publication date: October 24, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Pascal Steffanut, Charles Romain, Samuel Dagorne, Stephane Bellemin-Laponnaz
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Publication number: 20110104085Abstract: Cosmetic or pharmaceutical compositions comprising one or more polysiloxanes functionalized with at least one carbamate group are described. In a preferred embodiment the compositions are emulsions wherein the one or more polysiloxanes may advantageously be used as emulsifier.Type: ApplicationFiled: June 6, 2009Publication date: May 5, 2011Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Peter Klug, Frederic Maurice Pilz, Guiseppina Kluth, Pascal Steffanut, Markus Meder
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Publication number: 20110097567Abstract: The instant invention relates to polydiorganosiloxane oils having branched carbamate functions, their preparation and their use as softeners in the textile industry.Type: ApplicationFiled: June 12, 2009Publication date: April 28, 2011Applicant: CLARIANT FINANCE (BVI) LIMITEDInventor: Pascal Steffanut
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Patent number: 7625621Abstract: The present invention provides novel azo dye material based on antipyrine azo structure and metal complexes containing such azo compounds which are suitable for optical recording media. The dyes exert high light-fastnesses properties and excellent recording characteristics. In particular the invention relates to optical layers comprising such dyes, to a method for manufacturing such optical layers and to optical recording media comprising such optical layers.Type: GrantFiled: July 29, 2005Date of Patent: December 1, 2009Assignee: Clariant Finance (BVI) LimitedInventor: Pascal Steffanut