Patents by Inventor Albert Henderikus Alberts
Albert Henderikus Alberts 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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Publication number: 20220063885Abstract: The invention pertains to a biodegradable container or plate material comprising a layer of cellulose-based material provided with a composite surface layer comprising cellulose-based material and a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and an aliphatic polycarboxylic acid with 3 to 15 carbon atoms, wherein the polycarboxylic acid comprises at least 50 wt. % of tricarboxylic acid. The biodegradable container or plate material according to the invention shows one or more, in particular a combination of, the following properties: light weight, high (wet) strength, a desirable degree of flexibility, good (temporary) resistance against water, oil, and fat, and attractive visual and tactile characteristics.Type: ApplicationFiled: January 20, 2020Publication date: March 3, 2022Applicant: PLANTICS B.V.Inventors: Albert Henderikus ALBERTS, Ferry Ludovicus THYS, Wridzer Jan Willem BAKKER
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Patent number: 10323355Abstract: A composite material comprising 10-98 wt. % of a bio-based particulate or fibrous filler and at least 2 wt. % of a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, wherein the polyacid comprises at least 10 wt. % of tricarboxylic acid. Preferably, the filler is in the form of particles, fibers, and/or random or non-random layers. A plant-based filler may be used, in particular a cellulosic or lignocellulosic material, more in particular one or more materials selected from wood chips, wood flakes, sawdust, pulp, e.g., pulp of (recycled) paper or other fiber pulp, and plant-derived fibers such as cotton, linen, flax, and hemp. An animal-derived filler, in particular an animal-derived fiber such as wool, hair, silk, or feathers may also be used. Preferably the polyalcohol is selected from one or more of glycerol, sorbitol, xylitol, mannitol, 1,2-propane diol, 1,3-propane diol, and 1,2-ethane diol, in particular glycerol.Type: GrantFiled: June 28, 2018Date of Patent: June 18, 2019Assignee: PLANTICS B.V.Inventors: Albert Henderikus Alberts, Gad Rothenberg
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Patent number: 10315058Abstract: A composite material comprising 20-98 wt. % of a synthetic particulate or fibrous filler and at least 2 wt. % of a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, wherein the alcohol comprises at least 50 mole % of glycerol, and the acid comprises at least 50 wt. % of tricarboxylic acid. Preferably, the filler is in the form of particles, fibers, and/or random or non-random layers. Preferably, the filler is based on one or more of ceramic, including glass, in particular glass fibers, polymer, in particular polymer fibers, and carbon, in particular carbon fibers. The use of glass fiber based sheet-like material as filler is a particular embodiment of the invention. The composite material according to the invention has fire-retardant properties, which makes it particularly suitable for applications where fire-retardancy is an issue.Type: GrantFiled: April 13, 2012Date of Patent: June 11, 2019Assignee: Plantics B.V.Inventors: Albert Henderikus Alberts, Gadi Rothenberg
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Publication number: 20180313036Abstract: A composite material comprising 10-98 wt. % of a bio-based particulate or fibrous filler and at least 2 wt. % of a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, wherein the polyacid comprises at least 10 wt. % of tricarboxylic acid. Preferably, the filler is in the form of particles, fibers, and/or random or non-random layers. A plant-based filler may be used, in particular a cellulosic or lignocellulosic material, more in particular one or more materials selected from wood chips, wood flakes, sawdust, pulp, e.g., pulp of (recycled) paper or other fiber pulp, and plant-derived fibers such as cotton, linen, flax, and hemp. An animal-derived filler, in particular an animal-derived fiber such as wool, hair, silk, or feathers may also be used. Preferably the polyalcohol is selected from one or more of glycerol, sorbitol, xylitol, mannitol, 1,2-propane diol, 1,3-propane diol, and 1,2-ethane diol, in particular glycerol.Type: ApplicationFiled: June 28, 2018Publication date: November 1, 2018Inventors: Albert Henderikus ALBERTS, Gad ROTHENBERG
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Patent number: 10036122Abstract: A composite material comprising 10-98 wt. % of a bio-based particulate or fibrous filler and at least 2 wt. % of a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, wherein the polyacid comprises at least 10 wt. % of tricarboxylic acid. Preferably, the filler is in the form of particles, fibers, and/or random or non-random layers. A plant-based filler may be used, in particular a cellulosic or lignocellulosic material, more in particular one or more materials selected from wood chips, wood flakes, sawdust, pulp, e.g., pulp of (recycled) paper or other fiber pulp, and plant-derived fibers such as cotton, linen, flax, and hemp. An animal-derived filler, in particular an animal-derived fiber such as wool, hair, silk, or feathers may also be used. Preferably the polyalcohol is selected from one or more of glycerol, sorbitol, xylitol, mannitol, 1,2-propane diol, 1,3-propane diol, and 1,2-ethane diol, in particular glycerol.Type: GrantFiled: April 13, 2012Date of Patent: July 31, 2018Assignee: Plantics B.V.Inventors: Albert Henderikus Alberts, Gad Rothenberg
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Patent number: 9127120Abstract: The invention pertains to a process for producing a glycerol tri-carboxylic acid polyester foam which comprises the steps of combining glycerol and a tri-carboxylic acid in the liquid phase to provide a reaction mixture, and keeping the reaction mixture at a temperature of between 80° C. and 130° C. from the start of the reaction until a conversion of at least 90% is obtained. The foamed polyester of the present invention is “green”, biodegradable, and non-toxic, and can be cleanly combusted. It finds application in, int. al., packaging materials, insulation materials, and materials with a short life cycle.Type: GrantFiled: October 17, 2011Date of Patent: September 8, 2015Assignee: UNIVERSITEIT VAN AMSTERDAMInventors: Albert Henderikus Alberts, Gad Rothenberg
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Publication number: 20140080973Abstract: A composite material comprising 20-98 wt. % of a synthetic particulate or fibrous filler and at least 2 wt. % of a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, wherein the alcohol comprises at least 50 mole % of glycerol, and the acid comprises at least 50 wt. % of tricarboxylic acid. Preferably, the filler is in the form of particles, fibers, and/or random or non-random layers. Preferably, the filler is based on one or more of ceramic, including glass, in particular glass fibers, polymer, in particular polymer fibers, and carbon, in particular carbon fibers. The use of glass fiber based sheet-like material as filler is a particular embodiment of the invention. The composite material according to the invention has fire-retardant properties, which makes it particularly suitable for applications where fire-retardancy is an issue.Type: ApplicationFiled: April 13, 2012Publication date: March 20, 2014Applicant: Universiteit Van AmsterdamInventors: Albert Henderikus Alberts, Gadi Rothenberg
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Publication number: 20140065392Abstract: Laminate comprising a carrier and a coating layer, wherein the coating layer is applied over at least part of the carrier, the coating layer comprising a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, the coating layer having a thickness in the range of 10-4000 microns, wherein the aliphatic polyalcohol contains at least 50 mol. % of glycerol and the polyacid contains at least 30 wt. % of tricarboxylic acid. Optionally a second carrier may be applied over at least part of the coating layer. If so desired, a further coating layer is applied over at least part of the second carrier, with optional further carrier-coating stacks applied over the further carrier. Preferably the tricarboxylic acid is citric acid. The laminate according to the invention may be, e.g., a multiplex-type material. The laminate according to the invention has fire-retardant properties which makes it particularly suitable for use in applications where fire-retardancy is an issue.Type: ApplicationFiled: April 13, 2012Publication date: March 6, 2014Applicant: Universiteit Van AmsterdamInventors: Albert Henderikus Alberts, Gadi Rothenberg
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Publication number: 20130266788Abstract: The invention pertains to a process for producing a glycerol tri-carboxylic acid polyester foam which comprises the steps of combining glycerol and a tri-carboxylic acid in the liquid phase to provide a reaction mixture, and keeping the reaction mixture at a temperature of between 80° C. and 130+ C. from the start of the reaction until a conversion of at least 90% is obtained. The foamed polyester of the present invention is “green”, biodegradable, and non-toxic, and can be cleanly combusted. It finds application in, int. al., packaging materials, insulation materials, and materials with a short life cycle.Type: ApplicationFiled: October 17, 2011Publication date: October 10, 2013Applicant: UNIVERSITEIT VAN AMSTERDAMInventors: Albert Henderikus Alberts, Gad Rothenberg