Patents by Inventor Geert Deroover
Geert Deroover 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: 9580669Abstract: This invention pertains to candle wax and a method for making candle wax. The candle wax comprises a candle wax base mixture and a polymer wherein the polymer comprises units of the formula (I) wherein X is an alkyl, alkenyl, alkyl maleic anhydride or alkylene-imine; Y is selected from the group consisting of —O—, —S—, —NH—, —NCH2—, —NCH2CH2—, —COO— of which either the carbon or the oxygen group is bound to X, —C(?O)NH, trialkoxysilane, preferably trimethoxysilane or triethoxysilane, benzyl, amide group; Z is H or a C1-C40 alkyl group or a C1-C40 alkenyl group; n is a positive integer, preferably is n>3; if Y is —COO—, then the polymer is a copolymer comprising at least two different units, and if Z is H or a methyl or ethyl, than the polymer is a copolymer comprising at least one unit comprising a C3-C40 alkyl group or C3-C40 alkenyl group.Type: GrantFiled: November 7, 2012Date of Patent: February 28, 2017Assignee: Nchem BVBAInventors: Niels Van Opstal, Geert Deroover
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Publication number: 20160040352Abstract: A poly-electrolyte composition for forming a water insoluble copolymer suitable as a hydrogel, wherein the copolymer is formed by means of free radical polymerization of at least a first and a second hydrophilic monomer, wherein the first monomer is selected from vinylic sulphonic acids, vinylic phosphonic acids or a water soluble salt thereof, and wherein the second monomer is a vinylic monomer with an electron-withdrawing spacer between the double bond and an acidic group, at least one compound selected from the group consisting of monomers comprising an acidic group either in the free acid form or in the form of a water soluble salt, and of which the logarithm of the acid dissociation constant (pKa) in the free acid form has a value smaller than 3.5.Type: ApplicationFiled: February 11, 2015Publication date: February 11, 2016Inventors: Geert DEROOVER, Els MANNEKENS
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Patent number: 8894195Abstract: Non-aqueous pigment dispersions exhibit improved dispersion quality and/or stability for a specific selection of naphthol AS pigments and azo pigments by using specific quinacridone dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: GrantFiled: October 20, 2010Date of Patent: November 25, 2014Assignee: Agfa Graphics NVInventor: Geert Deroover
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Patent number: 8888267Abstract: Non-aqueous pigment dispersions exhibit improved dispersion quality and/or stability for a specific selection of quinacridone pigments, diketopyrrolo-pyrrole pigments and azo pigments by using specific naphthol AS dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: GrantFiled: October 19, 2010Date of Patent: November 18, 2014Assignee: Agfa Graphics NVInventor: Geert Deroover
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Patent number: 8871015Abstract: Non-aqueous pigment dispersions exhibiting improved dispersion quality and/or stability were prepared for a specific selection of naphthol AS pigments, diketopyrrolo-pyrrole pigments and quinacridone pigments, by using specific yellow monoazo dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: GrantFiled: October 15, 2010Date of Patent: October 28, 2014Assignee: Agfa Graphics NVInventor: Geert Deroover
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Publication number: 20140290126Abstract: This invention pertains to candle wax and a method for making candle wax. The candle wax comprises a candle wax base mixture and a polymer wherein the polymer comprises units of the formula (I) wherein X is an alkyl, alkenyl, alkyl maleic anhydride or alkylene-imine; Y is selected from the group consisting of —O—, —S—, —NH—, —NCH2—, —NCH2CH2—, —COO— of which either the carbon or the oxygen group is bound to X, —C(?O)NH, trialkoxysilane, preferably trimethoxysilane or triethoxysilane, benzyl, amide group; Z is H or a C1-C40 alkyl group or a C1-C40 alkenyl group; n is a positive integer, preferably is n>3; if Y is —COO—, then the polymer is a copolymer comprising at least two different units, and if Z is H or a methyl or ethyl, than the polymer is a copolymer comprising at least one unit comprising a C3-C40 alkyl group or C3-C40 alkenyl group.Type: ApplicationFiled: November 7, 2012Publication date: October 2, 2014Inventors: Niels Van Opstal, Geert Deroover
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Patent number: 8759441Abstract: A pigment dispersion includes a color pigment and a polymeric dispersant having at least one pending chromophore group covalently bound to the polymeric backbone of the polymeric dispersant through a linking group, wherein the at least one pending chromophore group is a derivative from a color pigment selected from the group consisting of monoazo pigments, disazo pigments, ?-naphtol pigments, naphtol AS pigments, azo pigment lakes, benzimidazolone pigments, disazo condensation pigments, metal complex pigments, isoindolinone pigments, isoindolinine pigments, phthalocyanine pigments, quinacridone pigments, diketopyrrolo-pyrrole pigments, thioindigo pigments, anthraquinone pigments, anthrapyrimidine pigments, indanthrone pigments, flavanthrone pigments, pyranthrone pigments, anthanthrone pigments, isoviolanthrone pigments, aluminum pigment lakes, dioxazine pigments, triarylcarbonium pigments, and quinophthalone pigments; the at least one pending chromophore group is a chromophore group occurring as a side groupType: GrantFiled: June 23, 2006Date of Patent: June 24, 2014Assignee: Agfa Graphics NVInventors: Johan Loccufier, Wojciech Jaunky, Geert Deroover, Lambertus Groenendaal
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Patent number: 8454743Abstract: A method of preparing a pigment includes, in order, the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with a compound according to Formula (I): wherein, X is a halogen atom or a tosylate group, and R1 and R2 independently represent an alkyl group; and c) hydrolyzing the R1-O bond and/or the R2-O bond. The obtained pigments can be used in non-aqueous pigment dispersions.Type: GrantFiled: October 15, 2010Date of Patent: June 4, 2013Assignee: AGFA-GEVAERT N.VInventor: Geert Deroover
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Patent number: 8435341Abstract: A method of preparing a pigment includes in order the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with 1,4-butane sultone or 1,3-propane sultone in an alkaline medium to form sulfobutyl groups respectively sulfopropyl groups on the pigment surface; and c) adding acid to convert the sulfobutyl groups or sulfopropyl groups to sulfonic acid groups. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed.Type: GrantFiled: October 20, 2010Date of Patent: May 7, 2013Assignee: AGFA-Gevaert N.V.Inventor: Geert Deroover
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Patent number: 8313576Abstract: A method of preparing a pigment includes the steps of: a) providing a mixture including: a pigment selected from the group of pigments including at least 50 wt % of C.I. Pigment Violet 23, C.I. Pigment Red 146, C.I. Pigment Red 176, C.I. Pigment Red 177, C.I. Pigment Violet 19 and C.I. Pigment Orange 13 based on the total weight of the pigment; alkyl nitrile; and at least one acid selected from the group consisting of sulfuric acid and chlorosulfuric acid, with the acid present in the mixture in amount of more than 2 wt % based on the total weight of the pigment; b) heating the mixture for more than 2 hours to a temperature of at least 70° C.; and c) filtering the mixture and washing the filtrand with a washing liquid containing water until the filtrate has a pH between 4 and 7. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed.Type: GrantFiled: October 15, 2010Date of Patent: November 20, 2012Assignee: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120279419Abstract: A method of preparing a pigment includes, in order, the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with a compound according to Formula (I): wherein, X is a halogen atom or a tosylate group, and R1 and R2 independently represent an alkyl group; and c) hydrolyzing the R1-O bond and/or the R2-O bond. The obtained pigments can be used in non-aqueous pigment dispersions.Type: ApplicationFiled: October 15, 2010Publication date: November 8, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120229555Abstract: Non-aqueous pigment dispersions exhibit improved dispersion quality and/or stability for a specific selection of naphthol AS pigments and azo pigments by using specific quinacridone dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: ApplicationFiled: October 20, 2010Publication date: September 13, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120202927Abstract: A method of preparing a pigment includes the steps of: a) providing a mixture including: a pigment selected from the group of pigments including at least 50 wt % of C.I. Pigment Violet 23, C.I. Pigment Red 146, C.I. Pigment Red 176, C.I. Pigment Red 177, C.I. Pigment Violet 19 and C.I. Pigment Orange 13 based on the total weight of the pigment; alkyl nitrile; and at least one acid selected from the group consisting of sulfuric acid and chlorosulfuric acid, with the acid present in the mixture in amount of more than 2 wt % based on the total weight of the pigment; b) heating the mixture for more than 2 hours to a temperature of at least 70° C.; and c) filtering the mixture and washing the filtrand with a washing liquid containing water until the filtrate has a pH between 4 and 7. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed.Type: ApplicationFiled: October 15, 2010Publication date: August 9, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120200650Abstract: Non-aqueous pigment dispersions exhibiting improved dispersion quality and/or stability were prepared for a specific selection of naphthol AS pigments, diketopyrrolo-pyrrole pigments and quinacridone pigments, by using specific yellow monoazo dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: ApplicationFiled: October 15, 2010Publication date: August 9, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120200634Abstract: Non-aqueous pigment dispersions exhibiting improved dispersion quality and/or stability were prepared for a specific selection of quinacridone pigments, diketopyrrolo-pyrrole pigments and azo pigments by using specific naphthol AS dispersion synergists. The non-aqueous pigment dispersions can be advantageously used in inkjet inks inkjet printing methods.Type: ApplicationFiled: October 19, 2010Publication date: August 9, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Publication number: 20120199044Abstract: A method of preparing a pigment includes in order the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with 1,4-butane sultone or 1,3-propane sultone in an alkaline medium to form sulfobutyl groups respectively sulfopropyl groups on the pigment surface; and c) adding acid to convert the sulfobutyl groups or sulfopropyl groups to sulfonic acid groups. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed.Type: ApplicationFiled: October 20, 2010Publication date: August 9, 2012Applicant: AGFA-GEVAERT N.V.Inventor: Geert Deroover
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Patent number: 8197584Abstract: A curable pigment inkjet ink set includes a cyan inkjet ink, a yellow inkjet ink, and a magenta inkjet ink, wherein the yellow inkjet ink having ABS(Y)momo <5 and ABS(Y)400-500>60 includes one or more yellow pigments; the cyan inkjet ink includes one or more ?-copper phthalocyanine pigments; and the magenta inkjet ink contains a mixed crystal including a first quinachdone and a second quinacridone in a ratio of the first quinacridone over the second quinacridone such that ABS(M)500-530>20 and ABS(M)500-600 >60. ABS(Y)500-530 represents the absorbance of the yellow inkjet ink between 500 and 530 nm; ABS(M)500-530 represents the absorbance of the magenta inkjet ink between 500 and 530 nm; ABS(Y)400-500 represents the absorbance ot the yellow inkjet ink between 400 and 500 nm; and ABS(M)500-600 represents the absorbance of the magenta inkjet ink between 500 and 600 nm.Type: GrantFiled: October 2, 2007Date of Patent: June 12, 2012Assignee: Agfa Graphics NVInventors: Roland Claes, Geert Deroover
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Patent number: 8138238Abstract: A non-aqueous inkjet ink includes C.I.Type: GrantFiled: October 2, 2007Date of Patent: March 20, 2012Assignee: Agfa Graphics NVInventors: Ivan Hoogmartens, Katrien Bernaerts, Geert Deroover
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Patent number: 8097663Abstract: A non-aqueous inkjet ink containing a pigment includes C.I.Type: GrantFiled: October 1, 2007Date of Patent: January 17, 2012Assignee: Agfa Graphics NVInventors: Katrien Bernaerts, Ivan Hoogmartens, Geert Deroover
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Patent number: 8093312Abstract: A non-aqueous inkjet ink includes a benzimidazolone pigment and a polymeric dispersant according to Formula (I): wherein, T represents hydrogen or a polymerization terminating group; Z represents the residue of polyethyleneimine having a number-average molecular weight of at least 100; A represents an oxyalkylene carbonyl group; T-C(O)An- represents a TPOAC-chain which is bound to Z through an amide bond; and n and m are integers wherein m is at least 2 and n is from 2 to 100; the polymeric dispersant fulfills the conditions of: WTPOAC>57 and NAmide?65 mol % wherein WTPOAC represents the ratio of the weight percentage of TPOAC-chains over the weight percentage of amide bonds in the polymeric dispersant; NAmide represents the mol % of amide bonds based on the total nitrogen content of the polymeric dispersant; and the values of WTPOAC and NAmide are calculated from the total nitrogen content determined by dry combustion of the polymeric dispersant and from the amine content determined through potType: GrantFiled: October 1, 2007Date of Patent: January 10, 2012Assignee: Agfa Graphics NVInventors: Geert Deroover, Katrien Bernaerts, Ivan Hoogmartens