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公开(公告)号：CA2677793C
公开(公告)日：2014-06-10
申请号：CA2677793
申请日：2007-02-08
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , CURETON KEVIN , LIN ILONA , BEIHOFFER THOMAS W
Abstract: A sunscreen composition, either impregnating a wipe substrate or comprising a sunscreen spray, wherein the composition comprises an oil phase containing a UV-absorbing organic sunscreen active, said oil phase dispersed stably as emulsion droplets in a water phase that contains i) a booster for the sun protection factor (SPF), comprising a combination of water-dispersible particulate materials, one of which is smectite clay, and a water-soluble or water-dispersible phenolic polymer; and ii) a water-soluble or water-dispersible polymer having a weak acid group, a weight average molecular weight of 1, 000 - 100, 000 Dalton, and an anionic charge density of no less than 4 milliequivalent per gram of the polymer.
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公开(公告)号：CA2594810C
公开(公告)日：2013-05-21
申请号：CA2594810
申请日：2006-01-12
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , LIN ILONA , ONGE JASON ST
Abstract: A cationic oil-in-water emulsion for addition to detersive compositions comprising a hydrophilic cationic polymer, an oil-soluble anionic polymer, and a hydrophobic benefit agent in the oil phase made by adding the benefit agent to a hydrophobic liquid; thickening the oil phase with an organophillic smectite clay reacted at clay platelet surfaces to make the clay platelet surfaces hydrophobic while the edge surfaces of the clay remain hydrophilic, such that the benefit agent is adsorbed at an oil/water interface in the emulsion, wherein the anionic polymer is capable of adsorbing the hydrophobic benefit agent at an oil/water interface of the emulsion, and the a hydrophilic, cationic polymer has a cationic nitrogen content of at least 6% by weight, that is incompatible with anionic surfactants, being insoluble in anionic-surfactant solutions containing an amount of 3% or higher of an anionic surfactant, and the hydrophilic cationic polymer has a cationic nitrogen content of at least 0.1% by weight and has a molecular weight of at least 600,000 Dalton.
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公开(公告)号：MX2011006954A
公开(公告)日：2011-08-03
申请号：MX2011006954
申请日：2010-02-08
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K
IPC: A61Q17/04
Abstract: La presente invención se relaciona con composiciones de filtro solar a base de una emulsión, incluyendo sólo absorbentes inorgánicos de radiación ultravioleta (UV). Específicamente, se relaciona con composiciones de filtro solar en la forma de emulsiones aceite en agua (O/W) y agua en aceite (W/O) que contienen absorbentes orgánicos de UV y un aditivo reforzador del SPF. Las composiciones de filtro solar incluyen una emulsión de fase oleosa y una fase líquida de agua o hidrofílica, un absorbente inorgánico de UV en fase oleosa, y un aditivo en la fase líquida de agua o hidrofílica, el aditivo es capaz de reforzar el factor de protección solar (SPF) de la composición de filtro solar en al menos el 20%.
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公开(公告)号：AU2006258255B2
公开(公告)日：2010-06-17
申请号：AU2006258255
申请日：2006-03-01
Applicant: AMCOL INTERNATIONAL CORP
Inventor： LIN ILONA , SENGUPTA ASHOKE K
Abstract: A stable, oil-in-water (O-W) emulsion-based sunscreen composition having at least one water-insoluble, organic UV-absorber having a water-solubility of much less than 0.1% by weight, contained in the oil phase of the sunscreen emulsion, comprising i) zinc oxide (ZnO) particles having a surface free of any prior coating of any inorganic oxide and hydrophobic material, remaining dispersed in the water phase of the sunscreen emulsion; ii) at least one non- or low-foaming, non-cationic, hydrophilic polymer, capable of dispersing or deflocculating the ZnO particles but incapable of thickening an aqueous composition to a viscosity of greater than 100 cps at 25° C., wherein the viscosity is measured using a Brookfield viscometer operated at 10 rpm for 15 seconds, when the polymer is added at an amount of 1%, based on the total weight of the polymer and water in the aqueous composition; iii) at least one phenolic polymer, capable of functioning as a dispersing or deflocculating agent for particulate material(s), and adsorbing at an oil-water interface; and v) a buffering agent for the water phase of the sunscreen emulsion.
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35.发明专利
公开(公告)号：MX2009008532A
公开(公告)日：2009-10-12
申请号：MX2009008532
申请日：2007-02-08
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , LIN ILONA , CURETON KEVIN , BEIHOFFER THOMAS W
Abstract: Una composición para filtro solar, ya sea que impregna un sustrato de una toallita húmeda o que comprende un aerosol del filtro solar, en donde la composición comprende una fase oleosa que contiene un activo de filtro solar orgánico absorbente de radicación UV, la fase oleosa dispersa establemente como gotitas de la emulsión en una fase acuosa que contiene: i) un refuerzo para el factor de protección solar (SPF), que comprende una combinación de materiales en macropartículas dispersables en agua, uno de los cuales que sea arcilla esméctica y un polímero fenólico soluble en agua o dispersable en agua; y ii) un polímero soluble en agua o dispersable en agua que tenga un grupo ácido débil, un peso molecular promedio ponderado de 1,000 - 100,000 daltons, y una densidad de carga aniónica no menor a 4 miliequivalentes por gramo del polímero.
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Patent Agency Ranking
公开(公告)号：CA2688203A1
公开(公告)日：2008-12-04
申请号：CA2688203
申请日：2008-05-27
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , MCGREGOR DAVID , KOTLOSKI DAVE , LOSACCO VINCENT J
Abstract: A benefit agent encapsulated in a particulate-based encapsulant, and a me thod of manufacturing the encapsulated benefit agent, are disclosed.
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公开(公告)号：MX2007008451A
公开(公告)日：2008-03-13
申请号：MX2007008451
申请日：2006-01-12
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , LIN ILONA , ONGE JASON ST
Abstract: Una emulsion cationica de aceite en agua para adicion a composiciones detergentes que comprenden un polimero cationico hidrofilico, un polimero anionico oleosoluble, y un agente de beneficio hidrofilico en la fase oleosa elaborado por adicion del agente de beneficio a un liquido hidrofobico; espesar la fase oleosa con una arcilla de esmectita organofilica hecha reaccionar en las superficies de las laminillas de arcilla para hacer las superficies de las laminillas de arcilla hidrofobicas, mientras que las superficies de los bordes de la arcilla permanece hidrofilicas, de modo que el agente de beneficio sea adsorbido en una interfase de aceite/agua en la emulsion, en donde el polimero anionico es capaz de adsorber el agente de beneficio hidrofobico en una interfase aceite/agua de la emulsion, y el polimero cationico hidrofilico tiene un contenido de nitrogeno cationico de al menos 6 % en peso, esto es incompatible con tensoactivos anionicos, que son insolubles en soluciones tensoactivas anionicas que contengan una cantidad de 3 % o mas de un tensoactivo anionico, y el polimero cationico hidrofilico tiene un contenido de nitrogeno cationico de al menos 0.1 % en peso y tiene un peso molecular de al menos 600,000 Daltones.
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公开(公告)号：MX2007015558A
公开(公告)日：2008-03-07
申请号：MX2007015558
申请日：2006-03-01
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K , LIN ILONA
Abstract: Una composicion protectora solar basada en la emulsion de aceite en agua (O-W) estable que tenga al menos un absorbente de rayos UV organico insoluble en agua que tenga una solubilidad en agua de mucho menos de 0.1 %, contenido en la fase oleosa de la emulsion protectora solar que comprende: (i) particulas de oxido de zinc (ZnO) que tengan una superficie libre de cualquier recubrimiento previo de cualquier oxido inorganico y material hidrofobico remanente disperso en la fase acuosa de la emulsion protectora solar, ii) al menos un polimero no o poco espumante, no cationico, hidrofilico, capaz de dispersar o desflocular las particulas de ZnO pero incapaz de espesar una composicion acuosa a una viscosidad de mas de 100 cps a 25 degree C, en donde la viscosidad es medida usando un viscosimetro de Brookfield operado a 10 rpm por 15 segundos, cuando el polimero es anadido en una cantidad de 1 %, con base en el peso total del polimero y agua en la composicion acuosa; iii) al menos un polimero fenolico, capaz de funcionar como un agente dispersante y desfloculante para materiales en forma de particulas, y adsorbente en una interfase de aceite-agua, y un agente regulador para la fase acuosa de la emulsion protectora solar.
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公开(公告)号：MX253435B
公开(公告)日：2008-01-16
申请号：MXPA03006945
申请日：2002-02-05
Applicant: AMCOL INTERNATIONAL CORP
Inventor： SENGUPTA ASHOKE K
IPC: A61K9/10 , A61K8/00 , A61K8/02 , A61K8/04 , A61K8/06 , A61K8/19 , A61K8/25 , A61K8/26 , A61K8/27 , A61K8/29 , A61K8/30 , A61K8/31 , A61K8/37 , A61K8/46 , A61K8/49 , A61K8/64 , A61K8/72 , A61K8/73 , A61K8/81 , A61K8/89 , A61K8/891 , A61K8/92 , A61K8/97 , A61K9/107 , A61K31/74 , A61K47/02 , A61K47/04 , A61K47/32 , A61K47/34 , A61K47/36 , A61K47/42 , A61K47/44 , A61P17/16 , A61Q1/02 , A61Q17/04 , A61Q19/00
Abstract: Cosmetic and personal care compositions can be manufactured using the multifunctional-additive compositions of the present invention. Such an additive preferably contains one or more particulate-based thickeners, such as a smectite clay, colloidal silica, laponite, and/or alumina, and most preferably one. or more smectite clays. According to one important embodiment of the present invention, the thickener particles are co-dispersed with particles of one or more particulate UVR-filters such as titanium dioxide, zinc oxide, or SUNSPHERE (available from International Specialty Chemicals, ISP), and most preferably with the natural particulate sunscreens such as the metal oxides. Another important component of the multifunctional-additive compositions is a dispersant or surface-modifier for the foregoing particulate materials, selected from the family of polyphenolic, natural polymers such as lignosulfonates, lignins, humates, tannates, and derivatives thereof. In addition, these compositions optionally include one or more of the following components: electrolytes, defoamers, humectants, emollients for cosmetics, preservatives, whiteners, and the like.
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公开(公告)号：CA2610924A1
公开(公告)日：2006-12-21
申请号：CA2610924
申请日：2006-03-01
Applicant: AMCOL INTERNATIONAL CORP
Inventor： LIN ILONA , SENGUPTA ASHOKE K
Abstract: A stable, oil-in-water (O-W) emulsion-based sunscreen composition having at least one water-insoluble, organic UV-absorber having a water-solubility of much less than 0.1% by weight, contained in the oil phase of the sunscreen emulsion, comprising i) zinc oxide (ZnO) particles having a surface free of any prior coating of any inorganic oxide and hydrophobic material, remaining dispersed in the water phase of the sunscreen emulsion; ii) at least one non- or low-foaming, non-cationic, hydrophilic polymer, capable of dispersing or deflocculating the ZnO particles but incapable of thickening an aqueous composition to a viscosity of greater than 100 cps at 25~C, wherein the viscosity is measured using a Brookfield viscometer operated at 10 rpm for 15 seconds, when the polymer is added at an amount of 1%, based on the total weight of the polymer and water in the aqueous composition; iii) at least one phenolic polymer, capable of functioning as a dispersing or deflocculating agent for particulate material(s), and adsorbing at an oil-water interface; and v) a buffering agent for the water phase of the sunscreen emulsion.
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