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1
US2019169797A1
Publication/Patent Number: US2019169797A1
Publication date: 2019-06-06
Application number: 16/316,758
Filing date: 2017-06-20
Inventor: Naderi, Ali  
Abstract: The present invention relates to a method of producing a nanofibrillated cellulose (NFC), the nanofibrillated cellulose product obtained and the use of the nanofibrillated cellulose product. The method comprises the steps of: Providing cellulosic fibres dispersed in water; Solvent-exchanging water in the fibres to an organic solvent, such as alcohol, suitably ethanol or isopropanol; Impregnating the fibres with a solution comprising a halogenated aliphatic acid having more than 2 carbon atoms; Heat-treating the impregnated fibres at a temperature of more than 50° C. in an alkaline solution comprising an organic solvent, which solution is optionally aqueous, to carboxyalkylatethe fibres; Washing the fibres; Converting the carboxyl groups their alkali metal counter-ion form; Optionally filtering the fibres; Dispersing the fibres in water; Mechanically disintegrating the fibres to provide the NFC product. The present invention relates to a method of producing a nanofibrillated cellulose (NFC), the nanofibrillated cellulose product obtained and the use of the nanofibrillated cellulose product. The method comprises the steps of: Providing cellulosic fibres dispersed in water; ...more ...less
2
EP3485087A1
Publication/Patent Number: EP3485087A1
Publication date: 2019-05-22
Application number: 17828058.2
Filing date: 2017-06-20
Inventor: Naderi, Ali  
Assignee: Innventia AB
3
SE540082C2
Publication/Patent Number: SE540082C2
Publication date: 2018-03-20
Application number: 1651068
Filing date: 2016-07-15
Inventor: Ali, Naderi  
Assignee: INNVENTIA AB
4
SE1651068A1
Publication/Patent Number: SE1651068A1
Publication date: 2018-01-16
Application number: 1651068
Filing date: 2016-07-15
Inventor: Ali, Naderi  
Assignee: INNVENTIA AB
5
WO2018013034A1
Publication/Patent Number: WO2018013034A1
Publication date: 2018-01-18
Application number: 2017050673
Filing date: 2017-06-20
Inventor: Naderi, Ali  
Assignee: INNVENTIA AB
Abstract: The present invention relates to a method of producing a nanofibrillated cellulose (NFC)
6
US10138574B2
Publication/Patent Number: US10138574B2
Publication date: 2018-11-27
Application number: 15/712,125
Filing date: 2017-09-21
Abstract: A method and an apparatus for fabricating nanofibrous articles is disclosed. The method may include providing a double-walled nozzle with an inner tube coaxially disposed within an outer tube. In addition, the double-walled nozzle is secured in front of a collector and an electrical field is applied between a tip of the double-walled nozzle and the collector. The method further includes preparing a spinning solution by dissolving a polymer in a solvent, mixing a vapor stream of the solvent with a stream of a pressurized gas with a predetermined ratio to obtain a pressurized solvent/gas stream feeding the spinning solution through the inner tube of the double-walled nozzle, and concurrently feeding the pressurized solvent/gas stream through the outer tube of the double-walled nozzle. The spinning solution and the pressurized solvent/gas stream may concurrently be discharged from the double-walled nozzle and drawn toward the collector being collected as nanofibrous articles on the collector. A method and an apparatus for fabricating nanofibrous articles is disclosed. The method may include providing a double-walled nozzle with an inner tube coaxially disposed within an outer tube. In addition, the double-walled nozzle is secured in front of a collector and an ...more ...less
7
WO2018073675A1
Publication/Patent Number: WO2018073675A1
Publication date: 2018-04-26
Application number: 2017055788
Filing date: 2017-09-24
Abstract: A method and an apparatus for fabricating nanofibrous articles is disclosed. The method may include providing a double-walled nozzle with an inner tube coaxially disposed within an outer tube. In addition, the double-walled nozzle is secured in front of a collector and an electrical field is applied between a tip of the double-walled nozzle and the collector. The method further includes preparing a spinning solution by dissolving a polymer in a solvent, mixing a vapor stream of the solvent with a stream of a pressurized gas with a predetermined ratio to obtain a pressurized solvent/gas stream feeding the spinning solution through the inner tube of the double-walled nozzle, and concurrently feeding the pressurized solvent/gas stream through the outer tube of the double-walled nozzle. The spinning solution and the pressurized solvent/gas stream may concurrently be discharged from the double-walled nozzle and drawn toward the collector being collected as nanofibrous articles on the collector. A method and an apparatus for fabricating nanofibrous articles is disclosed. The method may include providing a double-walled nozzle with an inner tube coaxially disposed within an outer tube. In addition, the double-walled nozzle is secured in front of a collector and an ...more ...less
8
WO2016128844A1
Publication/Patent Number: WO2016128844A1
Publication date: 2016-08-18
Application number: 2016050009
Filing date: 2016-01-03
Abstract: Provided is a nano face mask including a middle layer
9
US8907829B1
Publication/Patent Number: US8907829B1
Publication date: 2014-12-09
Application number: 13/896,526
Filing date: 2013-05-17
Inventor: Naderi, Ali  
Abstract: In accordance with systems and methods of the present disclosure, an input network for a delta-sigma modulator having at least one integrator stage and a feedback digital-to-analog stage, may be configured to, during a first period of a first phase of a clock signal, drive an analog feedback signal proportional to a digital feedback signal of the feedback digital-to-analog stage onto an input plate of a sampling capacitor integral to the input network. The input network may further be configured to, during a second period of the first phase of the clock signal, sample an analog input signal onto the input plates of the sampling capacitor. In accordance with systems and methods of the present disclosure, an input network for a delta-sigma modulator having at least one integrator stage and a feedback digital-to-analog stage, may be configured to, during a first period of a first phase of a clock signal, drive an ...more ...less
10
US8677227B2
Publication/Patent Number: US8677227B2
Publication date: 2014-03-18
Application number: 13/216,373
Filing date: 2011-08-24
Abstract: Low-Density Parity-Check (LDPC) codes offer error correction at rates approaching the link channel capacity and reliable and efficient information transfer over bandwidth or return-channel constrained links with data-corrupting noise present. They also offer performance approaching channel capacity exponentially fast in terms of the code length, linear processing complexity, and parallelism that scales with code length. They also offer challenges relating to decoding complexity and error floors limiting achievable bit-error rates. Accordingly encoders with reduced complexity, reduced power consumption and improved performance are disclosed with various improvements including simplifying communications linking multiple processing nodes by passing messages where pulse widths are modulated with the corresponding message magnitude, delaying a check operation in dependence upon variable node states, running the decoder multiple times with different random number generator seeds for a constant channel value set, and employing a second decoder with a randomizing component when the attempt with the first decoder fails. Low-Density Parity-Check (LDPC) codes offer error correction at rates approaching the link channel capacity and reliable and efficient information transfer over bandwidth or return-channel constrained links with data-corrupting noise present. They also offer performance ...more ...less
11
US2012054576A1
Publication/Patent Number: US2012054576A1
Publication date: 2012-03-01
Application number: 13/216,373
Filing date: 2011-08-24
Abstract: Low-Density Parity-Check (LDPC) codes offer error correction at rates approaching the link channel capacity and reliable and efficient information transfer over bandwidth or return-channel constrained links with data-corrupting noise present. They also offer performance approaching channel capacity exponentially fast in terms of the code length, linear processing complexity, and parallelism that scales with code length. They also offer challenges relating to decoding complexity and error floors limiting achievable bit-error rates. Accordingly encoders with reduced complexity, reduced power consumption and improved performance are disclosed with various improvements including simplifying communications linking multiple processing nodes by passing messages where pulse widths are modulated with the corresponding message magnitude, delaying a check operation in dependence upon variable node states, running the decoder multiple times with different random number generator seeds for a constant channel value set, and employing a second decoder with a randomizing component when the attempt with the first decoder fails. Low-Density Parity-Check (LDPC) codes offer error correction at rates approaching the link channel capacity and reliable and efficient information transfer over bandwidth or return-channel constrained links with data-corrupting noise present. They also offer performance ...more ...less
12
SE534473C2
Publication/Patent Number: SE534473C2
Publication date: 2011-09-06
Application number: 1050031
Filing date: 2010-01-14
13
SE1050031A1
Publication/Patent Number: SE1050031A1
Publication date: 2011-07-15
Application number: 1050031
Filing date: 2010-01-14
14
WO2011086012A1
Publication/Patent Number: WO2011086012A1
Publication date: 2011-07-21
Application number: 2011050066
Filing date: 2011-01-04
Abstract: A method of making a cellulosic water-repellent material and cellulosic material made water-repellent by such method. The method comprises; providing a solution of an acid of pKa 2-C4 alcohol optionally comprising water; providing an alkyltrialkoxyosilane; efficiently mixing the solution and the alkyltrialkoxysilane to produce a silanization composition; contacting the cellulosic material with the silanization composition; curing the cellulosic material contacted with the composition at a temperature of 100° C or more until substantially dry; optionally rinsing the treated material with an liquid media to remove the acid and optionally drying the rinsed treated material. The cellulosic water-repellent material is for example a cellulosic textile material. A method of making a cellulosic water-repellent material and cellulosic material made water-repellent by such method. The method comprises; providing a solution of an acid of pKa 2-C4 alcohol optionally comprising water; providing an alkyltrialkoxyosilane; efficiently mixing the ...more ...less