Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 2348. Отображено 100.
30-05-2013 дата публикации

Process for producing polyimide film, polyimide film and laminate comprising the same

Номер: US20130136934A1
Автор: Hideki Iwai, Jin Kobayashi, Tatsushi Nakayama, Youhei Oosumi
Принадлежит: UBE Industries Ltd

The present invention relates to a polyimide film prepared from a tetracarboxylic acid component and a diamine component, wherein the strength of orientation anisotropy in the film length of 2000 mm is 1.2 or less and/or the strength of orientation anisotropy in the film length of 1800 mm is 1.1 or less.

Подробнее
Номер записи: 1
09-01-2014 дата публикации

Polyetherimide pump

Номер: US20140010697A1
Автор: Peter Haug
Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

Подробнее
Номер записи: 2
07-01-2021 дата публикации

Methods and apparatus for microwave processing of polymer materials

Номер: US20210001520A1
Автор: Ananthkrishna Jupudi, Chien-Kang Hsiung, Clinton Goh, Felix Deng, Nuno Yen-Chu Chen, Tuck Foong Koh, Vinodh RAMACHANDRAN, Yue Cui, Yueh Sheng Ow
Принадлежит: Applied Materials Inc, Applied Materials Singapore Technology Pte Ltd

Methods and apparatus for curing a substrate or polymer using variable microwave frequency are provided herein. In some embodiments, a method of curing a substrate or polymer using variable microwave frequency includes: contacting a substrate or polymer with a plurality of predetermined discontinuous microwave energy bandwidths or a plurality of predetermined discontinuous microwave energy frequencies to cure the substrate or polymer.

Подробнее
Номер записи: 3
05-01-2017 дата публикации

Controlling crosslinking density and processing parameters of phthalonitriles

Номер: US20170001357A1
Автор: Andrew P. Saab, Matthew Laskoski, Teddy M. Keller
Принадлежит: US Department of Navy

Disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a reactive plasticizer; and an amine curing agent. Also disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a nonreactive plasticizer; and an amine curing agent. Also disclosed is a method of: providing a composition having a phthalonitrile compound; heating the composition to a processing temperature until the composition has a viscosity of 30-40 Pa•s at the processing temperature to form a partially cured composition; placing the partially cured composition into a material chamber of an extrusion machine; heating the partially cured composition and the material chamber to within 10° C. of the processing temperature; and extruding fiber from the extrusion machine.

Подробнее
Номер записи: 4
04-01-2018 дата публикации

Method for Solid Freeform Fabrication

Номер: US20180001544A1
Автор: Boydston Andrew J., Ganter Mark, Goetz Adam Edward, Larsen Michael Byrnes, Peterson Gregory Isaac, Storti Duane, Yurtoglu Mete
Принадлежит:

The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using 3D printing. A layer of prepolymer is deposited on a build plate to form a powder bed. The deposited powder bed is heated to about 50° C. to about 170° C. Then, a solution of activating agent is printed on the powder bed in a predetermined pattern, and a stimulus is applied converting the prepolymer to the final polymer. After a predetermined period of time, sequential layers are printed to provide the three-dimensional article. The three-dimensional object can be cured to produce the three-dimensional article composed of the final polymers. 1A three-dimensional article made by the process of:a. depositing a layer of prepolymer powder a build plate to form a powder bed;b. printing a solution of an activating agent at selected locations on the powder bed;c. exposing the printed solution to a stimulus to form a polymer layer of the three-dimensional article;d. repeating the steps (a)-(c) to form a remainder of the three-dimensional article; ande. curing the article.2. The method of claim 1 , wherein the prepolymer is poly(amic acid) claim 1 , polysulfide claim 1 , ketalized version of a polyketone claim 1 , or a reduced form a polyketone.3. The method of claim 2 , wherein the poly(amic acid) comprises an aromatic dianhydride and an aromatic diamine claim 2 , wherein the aromatic dianhydride and the aromatic diamine are in about 1:1 molar ratio.4. The method of claim 3 , wherein the aromatic dianhydride is selected from the group consisting of pyromellitic dianhydride (PMDA) claim 3 , biphenyl dianhydride (BPDA) claim 3 , benzophenonetetracarboxylic dianhydride (BTDA) claim 3 , and combination thereof claim 3 , and wherein diamine is p-phenylenediamine (PDA) claim 3 , 4 claim 3 ,4′-oxydianiline (ODA) claim 3 , or combinations thereof.5. The method of claim 1 , wherein the activator is acetic anhydride claim 1 , pyridine claim 1 , ...

Подробнее
Номер записи: 5
07-01-2016 дата публикации

Polyimide precursor, polyimide, flexible substrate prepared therewith, color filter and production method thereof, and flexible display device

Номер: US20160002407A1
Автор: Junji Wakita, Masao Tomikawa, Yukari Jo
Принадлежит: TORAY INDUSTRIES INC

The present invention is based on a polyimide precursor having unit structures represented by general formula (1) and unit structures represented by general formula (2), provides a polyimide precursor for which film whitening, cracking and bubbling do not occur regardless of film baking conditions, and provides a flexible TFT array, a flexible color filter, and a flexible substrate with a gas barrier layer using the polyimide precursor, and a flexible display device, etc. using same. (In general formulas (1) and (2), X 1 -X 4 each independently represents a hydrogen atom, C1 to C10 monovalent organic group or C1 to C10 monovalent alkylsilyl group. R 1 is represented by general formula (3) and R 2 is represented by general formula ( 4 ).) (In general formula (4), R 3 and R 4 each independently represents a C1 to C10 monovalent organic group.)

Подробнее
Номер записи: 6
02-01-2020 дата публикации

POLYIMIDE PRECURSOR RESIN COMPOSITION

Номер: US20200002476A1
Автор: KANADA Takayuki, MAITANI Masaki, OKUDA Toshiaki
Принадлежит: ASAHI KASEI KABUSHIKI KAISHA

Problem: The invention provides a polyimide precursor as well as a resin composition thereof that is excellent in coating properties of slit coating as well as productivity and also excellent in optical properties that are required for applications of flexible substrates. 2. The polyimide precursor according to claim 1 , wherein the weight-average molecular weight of the polyimide precursor is more than 96 claim 1 ,000.3. The polyimide precursor according to claim 1 , the tetravalent group represented by formula (2) is a residue group of 9 claim 1 ,9-bis(3 claim 1 ,4-dicarboxyphenyl)fluorene dianhydride claim 1 , or 9 claim 1 ,9-bis[4-(3 claim 1 ,4-dicarboxyphenoxy)phenyl]fluorene dianhydride.4. The polyimide precursor according to claim 1 , wherein the polyimide precursor is a copolymer of tetracarboxylic dianhydride and diamine claim 1 , and the tetracarboxylic dianhydride contains at least one of pyromellitic dianhydride and 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-biphenyltetracarboxylic dianhydride.5. The polyimide precursor according to claim 1 , wherein the diamine contains at least one selected from the group consisting of2,2′-diaminobis(trifluoromethyl)biphenyl,4,4′ and/or 3,3′-diaminodiphenyl sulfone,9,9-bis(4-aminophenyl)fluorene, and1,4-diaminocyclohexane.6. The polyimide precursor according to claim 1 , wherein the weight-average molecular weight of the polyimide precursor is 200 claim 1 ,000 or less.7. The polyimide precursor according to claim 1 , wherein the weight-average molecular weight of the polyimide precursor is 110 claim 1 ,000 to 200 claim 1 ,000.8. The polyimide precursor according to claim 1 , wherein the weight-average molecular weight of the polyimide precursor is 180 claim 1 ,000 or less.9. The polyimide precursor according to claim 1 , wherein the weight-average molecular weight of the polyimide precursor is 139 claim 1 ,000 or more.10. A resin composition comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the polyimide ...

Подробнее
Номер записи: 7
04-01-2018 дата публикации

BINDERS AND ASSOCIATED PRODUCTS

Номер: US20180002577A1
Автор: Hampson Carl, Jackson Roger, Pacorel Benedicte
Принадлежит:

The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state. 136.-. (canceled)37. A method of manufacturing a collection of matter bound by a polymeric binder comprising:(i) providing a collection of matter;(ii) providing a water-soluble pre-reacted binder composition in the form of an aqueous solution or dispersion, the aqueous solution or dispersion containing no more than 80 wt.-% of said pre-reacted binder composition, and the pre-reacted binder composition comprising the reaction product(s) of(a) at least one carbohydrate component selected from the group consisting of dextrose, glucose, fructose and mixtures thereof, and(b) hexamethylenediamine,wherein the pre-reacted binder composition comprises at least one pre-polymer having a molecular weight in the range of 1 to 500 kDa in an amount of 2 wt.-% or more, based on the total weight of the pre-reacted binder composition;(iii) applying the aqueous solution or dispersion to the collection of matter; and(iv) applying energy to the collection of matter containing said aqueous solution or dispersion to cure the binder composition.38. The method of claim 37 , wherein providing a water-soluble pre-reacted binder composition in the form of an aqueous solution or dispersion comprises reacting (a) the at least one carbohydrate component and (b) hexamethylenediamine at temperature(s) of at least 30° C. during period(s) of at least 5 minutes.39. The method of claim 37 , wherein said method has at least one of the following features:said at least one pre-polymer having a molecular weight in the range of 1 to 500 kDa is contained in the pre-reacted binder composition in an amount of 5 wt.-% or ...

Подробнее
Номер записи: 8
12-01-2017 дата публикации

Methods for altering the impact strength of noncellular thermoplastic materials

Номер: US20170008202A1
Автор: Dustin Miller, Vipin Kumar
Принадлежит: UNIVERSITY OF WASHINGTON

Methods for reducing the density of thermoplastic materials and the articles made therefrom having similar or improved mechanical properties to the solid or noncellular material. Also disclosed are improvements to foaming methods and the cellular structures of the foams made therefrom, and methods for altering the impact strength of solid or noncellular thermoplastic materials and the shaping of the materials into useful articles.

Подробнее
Номер записи: 9
11-01-2018 дата публикации

DEPOSITION MASK AND MANUFACTURING METHOD

Номер: US20180009190A1
Автор: Kawato Shinichi, Kikuchi Katsuhiro, Kobayashi Yuhki, MATSUNAGA Kazuki, OCHI Takashi
Принадлежит: SHARP KABUSHIKI KAISHA

It comprises: a film made of a resin in which an aperture pattern is formed, the aperture pattern passing through the film, the aperture being with a shape and dimension corresponding to the thin-film pattern in a pre-established region for formation of the thin-film pattern on the substrate; and a metal member that has an aperture part opposite the aperture pattern with a shape and dimension larger than the aperture pattern, the metal member being provided as a thin sheet in intimate contact with one surface of the film on an outside part of the aperture pattern of the film. The film is mutually distanced and distributed, at a position where the film does not overlap the aperture pattern, into a plurality of divided parts on one surface of the metal member. 1. A deposition mask comprising a plurality of layers , the deposition mask being for forming of a thin-film pattern of a certain shape on a substrate by deposition , the deposition mask comprising:a film in which an aperture pattern is formed, the aperture pattern passing through the film, the aperture being with a shape and dimension corresponding to the thin-film pattern in a pre-established region for formation of the thin-film pattern on the substrate; anda metal member that has an aperture part opposite the aperture pattern with a shape and dimension larger than the aperture pattern, the metal member being provided as a thin sheet in intimate contact with one surface of the film on an outside part of the aperture pattern of the film,wherein the film is, for the metal member, mutually distanced and distributed into a plurality of divided parts on one surface of the metal member.2. The deposition mask according to claim 1 ,wherein a gap separating between the film divided extends an entire length of the metal member in a width direction.3. The deposition mask according to claim 1 ,wherein a gap separating between the film divided extends an entire length of the metal member in a vertical direction orthogonal ...

Подробнее
Номер записи: 10
14-01-2021 дата публикации

ADDITIVE MANUFACTURING EMPLOYING POLYIMIDE-CONTAINING FORMULATIONS

Номер: US20210008793A1
Автор: KUNO Lev, POKRASS Mariana, SHELEF Gil, SINWANI Omer, SULTAN Shai
Принадлежит: Stratasys Ltd.

A method of additive manufacturing of a three-dimensional object, comprises: dispensing from a first array of nozzles a modeling material formulation containing a polyimide precursor to form a layer in a configured pattern corresponding to a shape of a slice of the object; applying to the layer ultraviolet radiation and infrared radiation from two different radiation sources; and repeating the dispensing and the application of radiation to form a plurality of layers in configured patterns corresponding to shapes of other slices of the object. Optionally, an additional modeling material formulation or a support material formulation is dispensed from a second array of nozzles. 1. A method of additive manufacturing of a three-dimensional object , the method comprising:dispensing from a first array of nozzles a modeling material formulation containing a polyimide precursor to form a layer in a configured pattern corresponding to a shape of a slice of the object;applying to said layer ultraviolet radiation and infrared radiation from two different radiation sources; andrepeating said dispensing and said application of radiation to form a plurality of layers in configured patterns corresponding to shapes of other slices of the object.2. A computer software product claim 1 , comprising a computer-readable medium in which program instructions are stored claim 1 , which instructions claim 1 , when read by a computerized controller of an additive manufacturing system claim 1 , cause said system to execute the method according to .3. A system for fabricating a three-dimensional object by additive manufacturing claim 1 , the system comprising:at least two array of nozzles, having at least a first array of nozzles configured for dispensing a modeling material containing a polyimide precursor, and a second array of nozzles configured for dispensing a support material; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a controller having a circuit configured to execute the ...

Подробнее
Номер записи: 11
15-01-2015 дата публикации

POLYIMIDE FILM AND FABRICATION METHOD THEREOF

Номер: US20150018484A1
Автор: Lin Chih-Wei, Tsai Meng-Ying
Принадлежит: Taimide Technology Incorporation

A polyimide film includes a polyimide polymer forming a main molecular structure of the polyimide film, and polyimide particles present in the polyimide film at a weight ratio between about 15 wt % and 30 wt % of a total weight of the polyimide film, the polyimide particles having an average diameter between about 3 μm and 8 μm. The polyimide film can have a 60° gloss value equal to or smaller than 10, a haze equal to or higher than 90%, and a Young's modulus equal to or higher than 280 kgf/mm. In some embodiments, methods of fabricating the polyimide film are also described. 1. A polyimide film comprising:a polyimide polymer forming a main molecular structure of the polyimide film; andpolyimide particles present in the polyimide film at a weight ratio between about 15 wt % and 30 wt % of a total weight of the polyimide film, the polyimide particles having an average diameter between about 3 μm and 8 μm.2. The polyimide film according to claim 1 , having a 60° gloss value equal to or smaller than 10.3. The polyimide film according to claim 1 , having a haze equal to or higher than 90%.4. The polyimide film according to claim 1 , having a Young's modulus equal to or higher than 280 kgf/mm.5. The polyimide film according to claim 1 , having a 60° gloss value equal to or smaller than 10 claim 1 , a haze equal to or higher than 90% claim 1 , and a Young's modulus equal to or higher than 280 kgf/mm.6. The polyimide film according to claim 1 , wherein the polyimide particles are obtained by reacting diamine monomers with dianhydride monomers claim 1 , the diamine monomers being selected from a group consisting of phenylenediamine (PDA) claim 1 , oxydianiline (ODA) and 2-(4-aminophenyl)-5-amino benzimidazole (PBOA) claim 1 , and the dianhydride monomers being selected from a group consisting of 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-biphenyltetracarboxylic dianhydride (BPDA) and pyromellitic dianhydride (PMDA).7. The polyimide film according to claim 1 , wherein the ...

Подробнее
Номер записи: 12
22-01-2015 дата публикации

DIE AND PROCESS FOR STRAND PELLETIZING A POLYMER COMPOSITION

Номер: US20150021808A1
Автор: Struijk Guido Richard
Принадлежит: DSM IP ASSETS B.V.

Die () for strand pelletizing a polymer composition, wherein the die surface () adjacent to the outflow opening () of the die is coated with a ceramic coating () or a polytetrafluorethylene containing coating. 1. Die for strand pelletizing a polymer composition , characterized in that the die surface adjacent to the outflow opening of the die is coated with a ceramic coating or a polytetrafluorethylene containing coating.2. Die according to claim 1 , characterized in that the ceramic coating or the polytetrafluorethylenee containing coating has a contact angle claim 1 , measured at 20° C. claim 1 , at a droplet of between 5 and 10 micro liter of distilled water claim 1 , 30 sec. after the application of the droplet at the dry coating claim 1 , of at least 80°.3. Die according to claim 2 , wherein the coating has a contact angle of at least 85°.4. Die according to claim 1 , wherein the coating comprises silica particles.5. Process for strand pelletizing a polymer composition using a die according to .6. Process according to claim 5 , wherein the polymer composition is a multi-phase composition.7. Process according to claim 6 , wherein the composition contains a solid additive.8. Process according to claim 7 , wherein the polymer composition is a glass fiber reinforced nylon. The invention relates to a die for strand pelletizing a polymer composition and a process for strand pelletizing the polymer composition using the die.Dies for strand pelletizing polymer compositions and processes using the die are generally known. Polymer compositions are fed to an extruder, molten in the extruder, put under pressure by the extruder screw and forced through the flow channel of a die that is mounted at the outlet of the extruder. In this way often a multiple of strands are formed that are cooled while running through a water bath and are after cooling fed to a cutter to be pelletized.A problem when forming the strands of a polymer composition is the occurrence of building up or ...

Подробнее
Номер записи: 13
17-01-2019 дата публикации

Display device and method of manufacturing display device

Номер: US20190019951A1
Автор: Takuya Nakagawa
Принадлежит: Japan Display Inc

A method of manufacturing a display device according to an embodiment of the present invention includes in order: forming a sacrificial layer in a predetermined position on a substrate; forming a base material containing resin on the substrate with the sacrificial layer therebetween; forming a display region including a plurality of pixels on the base material; irradiating the substrate with laser light from a side of the substrate on which the base material is not formed; and peeling the substrate from the base material. A region where the base material and the substrate are in contact with each other is present at least a part of an edge portion of the base material.

Подробнее
Номер записи: 14
25-01-2018 дата публикации

METHODS FOR FIBER REINFORCED ADDITIVE MANUFACTURING

Номер: US20180022032A1
Автор: Benhaim David Steven, Mark Gregory Thomas, Parangi Abraham Lawrence, Sklaroff Benjamin Tsu
Принадлежит:

A three-dimensional geometry is received, and sliced into layers. A first anisotropic fill tool path for controlling a three dimensional printer to deposit a substantially anisotropic fill material is generated defining at least part of an interior of a first layer. A second anisotropic fill tool path for controlling a three dimensional printer to deposit the substantially anisotropic fill material defines at least part of an interior of a second layer. A generated isotropic fill material tool path defines at least part of a perimeter and at least part of an interior of a third layer intervening between the first and second layers. 120.-. (canceled)21. A machine implemented method for generating motion command signals for controlling a three dimensional printer to form a plurality of layers of a 3D printed part , the method comprising acts of:generating a first toolpath signal for controlling the three dimensional printer to solidify fill material along a first toolpath that defines a wall of a first layer of the plurality of layers of the 3D printed part to be deposited;generating a second toolpath signal for controlling the three dimensional printer to lay a fiber tow along a second toolpath that defines a reinforcement region of the first layer of the 3D printed part to be deposited, the reinforcement region being interior to the wall;transmitting first motion command signals corresponding to the first toolpath signal to the three dimensional printer, the first motion command signals configured to control the three dimensional printer to solidify the fill material according to the first toolpath to form the wall of the first layer of the 3D printed part; andtransmitting second motion command signals corresponding to the second toolpath signal to the three dimensional printer, the second motion command signals configured to control the three dimensional printer to lay the fiber tow according to the second toolpath and orient the fiber tow such that the ...

Подробнее
Номер записи: 15
24-01-2019 дата публикации

METHOD AND DEVICE FOR RELEASING RESIN FILM, METHOD FOR MANUFACTURING ELECTRONIC DEVICE, AND METHOD FOR MANUFACTURING ORGANIC EL DISPLAY DEVICE

Номер: US20190022901A1
Автор: KISHIMOTO Katsuhiko, Narutaki Yozo, Tanaka Kohichi
Принадлежит:

Provided is a method for releasing a resin film which is capable of mechanically easily releasing without laser irradiation to the resin film formed on a supporting substrate, or without carrying out the complicated step of partially forming an adhesive layer or a release layer. Preparation for separation is made for separating a supporting substrate into a first part and a second part (S). In a state in which the resin film comes into intimate contact (adhesion) with a surface of the second part of the supporting substrate, the first part of the supporting substrate and at least an end edge on a side of the first part of the second part are relatively moved so as to be spaced from each other in a vertical direction to the surface (S). Afterwards, by a blowing tool in a parallel direction to the supporting substrate and in a widthwise direction of the resin film, a flowing force with a gas or a liquid at a constant pressure is applied to an end part of an intimate contact (adhered) surface between a resin film exposed by a partial release of the resin film and the first part of the supporting substrate (S). 2. The method for releasing the resin film according to claim 1 , wherein the partial release of the resin film is performed with an angle θ of 10° or more and 60° or less between the resin film and the first part of the supporting substrate.3. The method for releasing the resin film according to claim 1 , wherein the blowing of the gas or the liquid under the constant pressure is carried out by ejecting the gas or the liquid from an ejection part of a blowing tool claim 1 , and is carried out by relatively moving the supporting substrate and the blowing tool while an angle θ formed between the resin film and the first part of the supporting substrate is substantially constant claim 1 , and the second part of the supporting substrate and the first part are relatively moved so as to be spaced from each other in a vertical direction to the surface.4. The method for ...

Подробнее
Номер записи: 16
23-01-2020 дата публикации

CYANATE ESTER EPOXY DUAL CURE RESINS FOR ADDITIVE MANUFACTURING

Номер: US20200023576A1
Автор: Menyo Matthew S., Rolland Jason P.
Принадлежит:

A method of forming a three-dimensional object is carried out by: (a) providing a cyanate ester dual cure resin; (b) forming a three-dimensional intermediate from said resin, where said intermediate has the shape of, or a shape to be imparted to, said three-dimensional object, and where said resin is solidified by exposure to light; (c) optionally washing the three-dimensional intermediate, and then (d) heating and/or microwave irradiating said three-dimensional intermediate sufficiently to further cure said resin and form said three-dimensional object. Compositions useful for carrying out the method, and products made from the method, are also described. 2. The method of claim 1 , wherein R is a phenyl group.3. The method of claim 1 , wherein R is a phenyl claim 1 , biphenyl claim 1 , naphthyl claim 1 , bis(phenyl)methane claim 1 , bis(phenyl)ethane claim 1 , bis(phenyl)propane claim 1 , or bis(phenyl)dicyclopentadiene group claim 1 , or a phenol formaldehyde resin.4. The method of claim 1 , wherein said cyanate ester compound is selected from the group consisting of: bis(4-cyanathophenyl) methane; 1 claim 1 ,1-bis(4-cyanatophenyl)ethane; 2 claim 1 ,2-bis(4-cyanatophenyl) propane; bis(4-cyanatophenyl)ether; tetramethyl-1 claim 1 ,4-dicyanatobenzene; cyanated novolacs produced by reacting a novolac with cyanogen halide; cyanated bisphenol polycarbonate oligomers produced by reacting a bisphenol polycarbonate oligomer with cyanogen halide; and mixtures thereof.5. The method of claim 1 , wherein said metal catalyst is a metal salt of an organic acid of at least one metal selected from the group consisting of copper claim 1 , zinc claim 1 , lead claim 1 , nickel claim 1 , iron claim 1 , tin and cobalt.6. The method of claim 1 , wherein said metal catalyst is present in a range of 10 or 30 to 600 claim 1 , 1 claim 1 ,000 claim 1 , or 10 claim 1 ,000 microequivalents of said metal catalyst as compared to the total weight of said at least one cyanate ester claim 1 , epoxy ...

Подробнее
Номер записи: 17
04-02-2016 дата публикации

METHOD OF FABRICATING FLEXIBLE DISPLAY PANEL

Номер: US20160031127A1
Автор: Chang Yu-Chen, Chao Chun-Hsien, Chen Chien-Ying, LIN Yu-Hsin, Wu Kai-Chieh
Принадлежит:

A method of fabricating a flexible display panel is provided. In the method, a rigid substrate is provided, a fluorinated polyimide substrate is formed on the rigid substrate, a display device is formed on the fluorinated polyimide substrate, and the fluorinated polyimide substrate is separated from the rigid substrate. 1. A method of fabricating a flexible display panel , comprising:providing a rigid substrate;forming a fluorinated polyimide substrate on the rigid substrate;forming a display device on the fluorinated polyimide substrate; andseparating the fluorinated polyimide substrate from the rigid substrate.2. The method according to claim 1 , wherein when the display device is formed on the fluorinated polyimide substrate claim 1 , a manufacturing temperature is from 200° C. to 450° C. claim 1 , and a peeling force between the fluorinated polyimide substrate and the rigid substrate is 50 gf to 500 gf.3. The method according to claim 1 , wherein when the fluorinated polyimide substrate is separated from the rigid substrate claim 1 , a manufacturing temperature is from 25° C. to 30° C. claim 1 , and a peeling force between the fluorinated polyimide substrate and the rigid substrate is 3 gf to 12 gf.4. The method according to claim 1 , wherein a method of separating the fluorinated polyimide substrate from the rigid substrate comprises mechanical debonding claim 1 , laser lift-off claim 1 , and temporary adhesion debonding.5. The method according to claim 1 , wherein after the fluorinated polyimide substrate is separated from the rigid substrate claim 1 , the method further comprises adhering a back plate onto the fluorinated polyimide substrate claim 1 , and the back plate and the display device are respectively located on two opposite surfaces of the fluorinated polyimide substrate.6. The method according to claim 1 , wherein the rigid substrate comprises a glass substrate.7. The method according to claim 1 , wherein an amount of fluorine in the fluorinated ...

Подробнее
Номер записи: 18
04-02-2016 дата публикации

POLYIMIDE PRECURSOR AND POLYIMIDE

Номер: US20160032056A1
Автор: Hirotsu Kenji, IWAMOTO Keiji, Kohama Yukinori, Nakagawa Miharu, Oka Takuya, Takasawa Ryoichi, Watanabe Yoshiyuki
Принадлежит:

The present invention relates to a polyimide precursor comprising a repeating unit represented by the following chemical formula (1): 112-. (canceled)14. The polyimide precursor according to claim 13 , wherein the six-membered rings in A have a crosslinked cyclic form claim 13 , in which carbon atoms constituting the ring chemically bind to each other to form another ring.17. The polyimide precursor according to claim 13 , wherein B is at least one selected from the group consisting of the chemical formulae (4-1) to (4-3).18. The polyimide precursor according to claim 17 , wherein Arto Arin the chemical formula (4-1) to (4-3) are each independently a benzyl or biphenyl divalent group.19. The polyimide precursor according to claim 18 , wherein the bonding position of benzene or biphenyl as Arto Arfor forming a polyimide main chain is the para position.21. The polyimide precursor according to claim 13 , obtained from a tetracarboxylic acid component providing the repeating unit represented by chemical formula (1) in an amount of 70 mole % or more and other tetracarboxylic acid components in an amount of 30 mole % or less based on 100 mole % of the total tetracarboxylic acid components claim 13 , and a diamine component providing the repeating unit represented by chemical formula (1) in an amount of 70 mole % or more and other diamine components in an amount of 30 mole % or less based on 100 mole % of the total diamine components.22. The polyimide precursor according to claim 21 , wherein the other diamine component is at least one selected from the group consisting of oxydianiline claim 21 , p-phenylenediamine claim 21 , m-phenylenediamine claim 21 , benzidine claim 21 , 3 claim 21 ,3′-dimethylbenzidine claim 21 , 2 claim 21 ,2′-dimethylbenzidine claim 21 , p-methylene bis(phenylenediamine) claim 21 , bis(aminophenoxy)benzene claim 21 , bis[(aminophenoxy)phenyl]hexafluoropropane claim 21 , bis(aminophenyl)hexafluoropropane claim 21 , bis(aminophenyl)sulfone claim 21 , ...

Подробнее
Номер записи: 19
01-02-2018 дата публикации

THERMOPLASTIC COPOLYIMIDES

Номер: US20180030206A1
Автор: Jeol Stéphane
Принадлежит:

The present invention relates to semiaromatic semicrystalline thermoplastic copolyimides obtained by polymerization of at least: (a) an aromatic compound comprising two anhydride functions and/or carboxylic acid and/or ester derivatives thereof; (b) a diamine of formula (I) NH2—R—NH2 in which R is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number X of carbon atoms, X being between 4 and 12; and (c) a diamine of formula (II) NH2—R′—NH2 in which R′ is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number Y of carbon atoms, Y being between 10 and 20; it being understood that diamine (b) is different from diamine (c). 118-. (canceled)19. A semiaromatic semicrystalline thermoplastic copolyimide obtained by polymerization of at least:(a) an aromatic compound comprising two anhydride functions and/or carboxylic acid and/or ester derivatives thereof;(b) a diamine of formula (I) NH2—R—NH2 selected from the group consisting of: 1,4-diaminobutane, 1,5-diaminopentane, 2-methyl-1,5-diaminopentane, hexamethylenediamine, 3-methylhexamethylenediamine, 2,5-dimethylhexamethylenediamine, 2,2,4- and 2,4,4-trimethyl-hexamethylenediamine, 1,7-diaminoheptane, 1,8-diaminooctane; and(c) a diamine of formula (II) NH2—R′—NH2 in which R′ is a saturated or unsaturated, linear or branched, divalent aliphatic hydrocarbon-based radical, optionally comprising heteroatoms, wherein the two amine functions are separated by a number Y of carbon atoms, Y is between 10 and 20, and the radical R′ comprises not more than 20 carbon atoms;wherein the copolyimide has at least two melting points Tf, and the melting points are between 50° C. and 330° C., measured by differential scanning calorimetry and heating the copolyimide from 20° C. at a rate of 10° C./minute.20. The copolyimide as claimed in claim 19 , wherein the copolyimide is obtained with ...

Подробнее
Номер записи: 20
31-01-2019 дата публикации

PRESSURE INDUCED SURFACE WETTING FOR ENHANCED SPREADING AND CONTROLLED FILAMENT SIZE

Номер: US20190030559A1
Автор: Karatay Elif, Neelakantan Ravi
Принадлежит:

A roller includes a cylindrical outer surface of a hydrophobic material, an inner core of a hydrophilic material, and an inhomogeneous geometric pattern of grooves in the surface that expose the hydrophilic material. A method of manufacturing a roller, includes providing a cylindrical core of a hydrophilic material, covering the cylindrical core with a hydrophobic surface, creating grooves in the hydrophobic surface to form a geometrically inhomogeneous pattern of the hydrophilic material. A method of manufacturing a roller, includes forming a pattern of geometrically inhomogeneous grooves on a hydrophobic core, functionalizing the surface to make the surface hydrophilic, and removing a portion of a top layer of the hydrophobic core to expose the hydrophobic core, leaving hydrophilic grooves. 1. A roller , comprising:a cylindrical outer surface of a hydrophobic material;an inner core of a hydrophilic material; andan inhomogeneous geometric pattern of grooves in the surface that expose the hydrophilic material.2. The roller of claim 1 , wherein the hydrophilic material comprises polyetherimide.3. The roller of claim 1 , wherein a size of areas between the grooves is less than three times a size of the grooves.4. The roller of claim 1 , wherein the hydrophobic material comprises one of polytetrafluoroethylene or Teflon.5. The roller of claim 1 , wherein the inhomogeneous pattern is a helical groove and has a turn finish of a desired radius.6. The roller of claim 1 , wherein the grooves have a capillary pressure of less than −100 Pascals.7. A method of manufacturing a roller claim 1 , comprising:providing a cylindrical core of a hydrophilic material;covering the cylindrical core with a hydrophobic surface;creating grooves in the hydrophobic surface to form a geometrically inhomogeneous pattern of the hydrophilic material.8. The method of claim 7 , wherein covering the cylindrical core with a hydrophobic surface comprises inserting the hydrophilic core inside a ...

Подробнее
Номер записи: 21
17-02-2022 дата публикации

MANUFACTURE OF DEGRADABLE POLYCYANURATE BULK MOLDING COMPOSITIONS

Номер: US20220049056A1
Автор: Agrawal Devesh, Kovalchuk Anton, SADANA ANIL
Принадлежит: Baker Hughes Oilfield Operations LLC

A process for the manufacture of a degradable polycyanurate bulk molding composition includes: contacting a liquid cyanate ester monomer with an additive material and a polymerization catalyst to form a reaction mixture; maintaining a temperature of the reaction mixture at about 80° C. to about 100° C. to form a polycyanurate product having a viscosity of about 120 to about 200 centipoise at 23° C.; heating a reinforcing filler at a temperature of about 50 to about 150° C. to form a pre-heated reinforcing filler; and blending the polycyanurate product with the pre-heated reinforcing filler to form the degradable polycyanurate bulk molding composition. The bulk molding composition can be used to form a degradable polycyanurate article. 1. A process for the manufacture of a degradable polycyanurate bulk molding composition , the process comprising:contacting a liquid cyanate ester monomer with an additive material and a polymerization catalyst to form a reaction mixture;maintaining a temperature of the reaction mixture at about 80° C. to about 100° C. to form a polycyanurate product having a viscosity of about 120 to about 200 centipoise at 23° C.;heating a reinforcing filler at a temperature of about 50 to about 150° C. to form a pre-heated reinforcing filler; andblending the polycyanurate product with the pre-heated reinforcing filler to form the degradable polycyanurate bulk molding composition.2. The process of claim 1 , whereinthe liquid cyanate ester monomer comprises bisphenol E cyanate ester, andthe process comprises contacting bisphenol E cyanate ester and the additive material in the presence of the polymerization catalyst at a temperature of less than about 40° C. for about 10 minutes to about 2 hours to form the reaction mixture.3. The process of claim 1 , whereinthe liquid cyanate ester monomer comprises bisphenol A cyanate ester, and melting bisphenol A cyanate ester to form the liquid cyanate ester monomer;', 'contacting the liquid cyanate ester monomer ...

Подробнее
Номер записи: 22
17-02-2022 дата публикации

Fiber-reinforced polyimide resin molding precursor and method for producing the same

Номер: US20220049060A1
Автор: Kazunobu Watanabe, Kouta SEGAMI, Yusuke Kobayashi
Принадлежит: Toyo Seikan Group Holdings Ltd

The present invention provides a molding precursor for a fiber-reinforced polyimide resin molded article, which is formed by impregnating a functional fiber with an addition-reaction type polyimide resin. The molding precursor has a melt viscosity in the range of 300 to 3200 kPa·s under conditions of keeping for 1 to 10 minutes at a temperature 5 to 20° C. lower than the thickening-start temperature so as to effectively prevent a fiber-reinforced polyimide resin molded article from warping. The present invention provides also a method for producing the molding precursor.

Подробнее
Номер записи: 23
11-02-2016 дата публикации

FILM MANUFACTURING METHOD AND MANUFACTURING APPARATUS

Номер: US20160039155A1
Автор: HIROHATA Taiki, ITO Kazumi, Kimura Masakatsu, OGAWA Yuji
Принадлежит: UBE INDUSTRIES, LTD.

A film manufacturing method and manufacturing apparatus for manufacturing a film having excellent dimensional stability to heat at a good product yield and performing a stress relaxation treatment of the film include performing the stress relaxation treatment while conveying the film in a non-contact state using a levitation conveyance device for jetting a heated gas from gas injection holes to the film and conveying the film in a non-contact state. The film manufacturing method and manufacturing apparatus are particularly suitable for stress relaxation treatment of a polyimide film obtained by heat-treating a polyimide film precursor. 1. A film manufacturing method for performing a stress relaxation treatment of a film wherein the stress relaxation treatment is performed using a levitation conveyance device comprising a plurality of film conveyance guides having convex curved film conveyance faces comprising of gas injection holes , a heated gas being jetted to the film from the gas injection holes and the film being curved in alternatingly opposite directions and conveyed in a non-contact state.2. The film manufacturing method according to claim 1 , wherein:film presser devices having concave curved faces are arranged to face the film conveyance faces of the film conveyance guides across a predetermined gap from said film conveyance faces,gas injection holes are provided in said concave curved faces, andthe heated is blown against both sides of the film and the film conveyed in levitated fashion by the heated gas jetted from the gas injection holes of the film conveyance guides and the heated gas jetted from the gas injection holes of the film presser devices.3. The film manufacturing method according to claim 1 , comprising varying the temperature of the heated gas jetted from the gas injection holes of the plurality of film conveyance guides and performing the stress relaxation treatment.4. The film manufacturing method according to claim 1 , comprising ...

Подробнее
Номер записи: 24
09-02-2017 дата публикации

MULTI-SECTIONAL COMPOSITE TOOLING

Номер: US20170036375A1
Автор: Callis Richard, Gerdisch Mark, Senta Adam
Принадлежит:

A multi-sectional composite tooling for use in molding large composite structures. The tooling includes at least two tooling sections that are made from quasi-isotropic sheet molding compound. The two tooling sections are seamed together with a scarf plug at the tooling surface. The scarf plug is composed of specially oriented layers of consolidated quasi-isotropic sheet molding compound. The scarf plug is made from the same type of quasi-isotropic sheet molding compound that is used to make the tooling sections. 1. A multi-sectional tooling for use in molding a large composite structure that has a molded surface , said multi-sectional tooling comprising:a first tooling section comprising a first tool surface which is shaped to form a first portion of the molded surface of said large composite structure, a first side surface and a first scarf surface extending at an angle from said first tooling surface to said first side surface, said first scarf surface having a first exterior edge located at said first tooling surface and a first interior edge located at said first side surface, said first tooling section comprising multiple layers of cured quasi-isotropic sheet molding compound, said layers of sheet molding compound each comprising a plurality of randomly oriented chips wherein said chips comprise unidirectionally oriented fibers and a cured resin;a second tooling section comprising a second tooling surface which is shaped to form a second portion of the molded surface of said large composite structure, a second side surface and a second scarf surface extending at an angle from said second tooling surface to said second side surface, said second scarf surface having a second exterior edge located at said second tooling surface and a second interior edge located at said second side surface, said second tooling section comprising multiple layers of cured quasi-isotropic sheet molding compound, said layers of sheet molding compound each comprising a plurality of ...

Подробнее
Номер записи: 25
24-02-2022 дата публикации

Material mixing for additive manufacturing apparatus

Номер: US20220055303A1
Автор: Ioannis Papapolymerou, John D. ALBRECHT, Michael Thomas CRATON, Premjeet Chahal
Принадлежит: Michigan State University MSU

Material mixing for an additive manufacturing apparatus is provided. A further aspect employs multiple material inlets for simultaneously feeding a polymer and/or nanocomposite material in at least a first inlet, and ceramic or other particles in at least a second inlet, to a single additive manufacturing outlet nozzle. In another aspect, a three dimensional printing machine varies a chemical or compounding characteristic, such as a loading percentage, of printing material during printing. In another aspect, in situ mixing of a polymer and/or nanocomposite with variable amounts of ceramic, magnetic or other particles therein in an additive manufacturing apparatus, such as a multi-material aerosol jet printing machine.

Подробнее
Номер записи: 26
06-02-2020 дата публикации

ULTRAFILTRATION MEMBRANE AND ITS PREPARATION METHOD

Номер: US20200039121A1
Автор: Shengmin Li
Принадлежит:

The present invention relates to a method for preparing an ultrafiltration membrane with high mechanical property. In the present invention, since the cellulose, which has high mechanical property, is added into the casting membrane solution, the retention rate of the ultrafiltration membrane of the present invention is improved. 1. A method for preparing an ultrafiltration membrane , comprising the following steps:dissolving Polyetherimide, cellulose and lithium chloride in N,N-dimethylacetamide at a first temperature to form an initial casting membrane solution, and standing for defoaming at a second temperature and a first humidity for a first period to obtain a treated casting membrane solution;pouring the treated casting membrane solution on a glass substrate, and obtaining a liquid-state membrane with a thickness of 150-250 μm by using a membrane applicator;allowing the liquid-state membrane to volatilize at a third temperature and a second humidity for a second period, and placing the glass substrate together with the liquid-state membrane formed thereon in a coagulation bath, to allow the liquid-state membrane to solidify to obtain a solid-state membrane; andtaking the solid-state membrane out of the coagulation bath, air-drying, and drying it in a drying oven for a third period, to obtain the ultrafiltration membrane.2. The method according to claim 1 , wherein claim 1 ,the first temperature is 50-90 □;the second temperature is 15-25 □;the third temperature is 15-25 □;the first humidity is 10%-30%;the second humidity is 10%-30%;the first period is 6-10 hours;the second period is 10-120 seconds; andthe third period is 60 minutes.3. The method according to claim 1 , wherein claim 1 , in the treated casting membrane solution claim 1 ,the mass concentration of the Polyetherimide is 20%-40%,the mass ratio between the cellulose and the Polyetherimide is 0.1-1:1, andthe mass ratio between the lithium chloride and the Polyetherimide is 0.01-0.1:1.4. The method ...

Подробнее
Номер записи: 27
06-02-2020 дата публикации

CYANATE ESTER DUAL CURE RESINS FOR ADDITIVE MANUFACTURING

Номер: US20200039141A1
Автор: Menyo Matthew S., Rolland Jason P.
Принадлежит:

A method of forming a three-dimensional object is carried out by: (a) providing a cyanate ester dual cure resin; (b) forming a three-dimensional intermediate from said resin, where said intermediate has the shape of, or a shape to be imparted to, said three-dimensional object, and where said resin is solidified by exposure to light; (c) optionally washing the three-dimensional intermediate, and then (d) heating and/or microwave irradiating said three-dimensional intermediate sufficiently to further cure said resin and form said three-dimensional object. Compositions useful for carrying out the method, and products made from the method, are also described. 1. A method of forming a three-dimensional object , comprising:(a) providing a cyanate ester dual cure resin;(b) forming, by additive manufacturing, a three-dimensional intermediate from said resin, where said intermediate has the shape of, or a shape to be imparted to, said three-dimensional object, and wherein said resin is solidified by exposure to light;(c) optionally washing the three-dimensional intermediate, and then(d) heating and/or microwave irradiating said three-dimensional intermediate sufficiently to further cure said resin and form said three-dimensional object; (i) a photoinitiator;', '(ii) monomers and/or prepolymers that are polymerizable by exposure to actinic radiation or light;', '(iii) optionally, a light absorbing pigment or dye;', '(iv) a metal catalyst;', {'br': None, 'sub': 'm', 'R\ue8a0O·C≡N\ue8a0\u2003\u2003(I)'}, '(v) at least one cyanate ester compound, and/or a prepolymer thereof, each said cyanate ester compound independently having a structure of Formula I], 'wherein said cyanate ester dual cure resin comprises '(vi) optionally a filler;', 'wherein m is 2, 3, 4, or 5, and R is an aromatic or aliphatic group; and'}2. The method of claim 1 , wherein R is a phenyl group.3. The method of claim 1 , wherein R is a phenyl claim 1 , biphenyl claim 1 , naphthyl claim 1 , bis(phenyl)methane ...

Подробнее
Номер записи: 28
07-02-2019 дата публикации

THERMOPLASTIC POLYIMIDES, METHOD FOR THE MANUFACTURE THEREOF, AND ARTICLES PREPARED THEREFROM

Номер: US20190040201A1
Автор: CHELLAMUTHU Manojkumar, PATIL Dadasaheb V.
Принадлежит:

A polymer composition including a polyetherimide comprising repeating units of formula (1) and formula (2) [Formula should be inserted here] wherein the repeating units of formula (1) are present in an amount of at least 10 mole %, preferably 20 to 100 mole %, Z is independently at each occurrence derived from a biphenol; Z′ is independently at each occurrence a group of formulas (3) to (13) as defined herein, preferably bisphenol A, 1,2-dihydroxybenzene, 1,1-bis(4-hydroxyphenyl)-1-phenyl-ethane, isophorone bisphenol (1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane), spirobiindane bisphenol, dimethylindanone bisphenol, 3,3′-dimethylbisphenol cyclohexane, or fluorenone bisphenol; and R is independently at each occurrence as a Caromatic hydrocarbon group or a halogenated derivative thereof, a straight or branched chain Calkylene group or a halogenated derivative thereof, a Ccycloalkylene group or halogenated derivative thereof; wherein the polyetherimide has a Tg of greater than 200° C. 2. The polymer composition of claim 1 , wherein the polyetherimide has at least one of:a weight average molecular weight of at least 20,000 grams per mole;a maximum hydroxyl polymer endgroup content of 700 parts per million by weight; andfurther wherein the polymer composition comprises less than 3000 part per million of a chloride, based on the total parts of polyetherimide.4. The polymer composition of claim 3 , wherein the polyetherimide is prepared by a method comprising contacting the bis(halophthalimide) composition and an alkali metal salt of a dihydroxy compound of the formula{'br': None, 'sup': +−', '−+', '+−', '−+, 'MO—Z—OM and MO—Z′—OM;'} M is an alkali metal; and', {'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'Z and Z′ are as defined in ;'}], 'wherein'}under conditions effective to provide the polyetherimide.5. The polymer composition of claim 3 , wherein the molar ratio of alkali metal salt of the dihydroxy compound to bis(halophthalimide) is from 0.9:1.0 to 1:0:0 ...

Подробнее
Номер записи: 29
12-02-2015 дата публикации

THERMOPLASTIC COPOLYIMIDES

Номер: US20150045501A1
Автор: Jeol Stéphane
Принадлежит:

The present invention relates to semiaromatic semicrystalline thermoplastic copolyimides obtained by polymerization of at least: (a) an aromatic compound comprising two anhydride functions and/or carboxylic acid and/or ester derivatives thereof; (b) a diamine of formula (I) NH2-R—NH2 in which R is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number X of carbon atoms, X being between 4 and 12; and (c) a diamine of formula (II) NH2-R′—NH2 in which R′ is a divalent aliphatic hydrocarbon-based radical optionally comprising heteroatoms, the two amine functions being separated by a number Y of carbon atoms, Y being between 10 and 20; it being understood that diamine (b) is different from diamine (c). 133-. (canceled)34. A semiaromatic semicrystalline thermoplastic copolyimide obtained by polymerization of at least:(a) an aromatic compound comprising two anhydride functions and/or carboxylic acid and/or ester derivatives thereof;(b) a diamine of formula (I) NH2-R—NH2 selected from the group consisting of: 1,4-diaminobutane, 1,5-diaminopentane, 2-methyl-1,5-diaminopentane, hexamethylenediamine, 3-methylhexamethylenediamine, 2,5-dimethylhexamethylenediamine, 2,2,4- and 2,4,4-trimethyl-hexamethylenediamine, 1,7-diaminoheptane, 1,8-diaminooctane; and(c) a diamine of formula (II) NH2-R′—NH2 in which R′ is a saturated or unsaturated divalent aliphatic hydrocarbon-based radical, optionally comprising heteroatoms, wherein the two amine functions are separated by a number Y of carbon atoms, Y is between 10 and 20, and the radical R′ comprises not more than 20 carbon atoms.35. The copolyimide as claimed in claim 34 , wherein the copolyimide is obtained with addition of chain limiter(s) and/or supplemented with an excess of one of the monomers claim 34 , so as to create a stoichiometric imbalance.36. The copolyimide as claimed in claim 34 , wherein the copolyimide has a melting point Tf of between 50 ...

Подробнее
Номер записи: 30
18-02-2016 дата публикации

3D PRINTING WITH PHT/PHA BASED MATERIALS AND POLYMERIZABLE MONOMERS

Номер: US20160046803A1
Автор: Boday Dylan J., GARCIA Jeannette M., Hedrick James L., Nelson Alshakim, Wojtecki Rudy J.
Принадлежит:

This application describes methods of forming an object. The methods described include forming a mixture with i) one or more primary diamines, ii) one or more polymerizable monomers, iii) a formaldehyde-type reagent, and iv) a polymerization initiator; forming a gel by heating the mixture to a temperature of at least 50° C.; and curing the one or more polymerizable monomers by activating the polymerization initiator. The one or more primary diamines may include one or more amine functional oligomers and/or primary aromatic diamine small molecules. The one or more polymerizable monomers may include styrenics, acrylates, methacrylates, vinyl esters, unsaturated polyesters, and derivatives thereof. The gel is a polyhemiaminal (PHA), a polyhexahydrotriazine (PHT), and/or a polyoctatriazacane (POTA) polymer, and curing of the gel forms an interpenetrating network of the PHA/PHT/POTA and the polymer formed from the polymerizable monomers. 1. A method of forming a material , comprising:forming a mixture comprising i) one or more primary diamines, ii) one or more polymerizable monomers, iii) a formaldehyde-type reagent, and iv) a polymerization initiator;forming a gel by heating the mixture to a temperature of at least 50° C.; andcuring the one or more polymerizable monomers by activating the polymerization initiator.2. The method of claim 1 , wherein the one or more primary diamines comprises one or more amine functional oligomers.3. The method of claim 1 , wherein the one or more polymerizable monomers is selected from the group consisting of styrenics claim 1 , acrylates claim 1 , methacrylates claim 1 , vinyl esters claim 1 , unsaturated polyesters claim 1 , and derivatives thereof.4. The method of claim 2 , wherein the one or more amine functional oligomers comprise oligomers selected from the group consisting of polyethers claim 2 , polyesters claim 2 , polystyrenics claim 2 , polyacrylates claim 2 , polymethacrylates claim 2 , polycyclooctene claim 2 , polyamides ...

Подробнее
Номер записи: 31
15-02-2018 дата публикации

Semi-crystalline build materials

Номер: US20180044523A1
Автор: Luke M.B. Rodgers, Vittorio L. Jaker
Принадлежит: Stratasys Inc

A polymeric material includes a semi-crystalline polymer and a secondary material wherein when the secondary material is combined with the semi-crystalline polymer to form a blend having an enthalpy that is between about 2 J/g heat of fusion and about 80% of the heat of fusion of the neat semi-crystalline material, as measured by differential scanning calorimetry (DSC) when cooling from a melting temperature to a hot crystalline temperature at a rate of 10° C./min.

Подробнее
Номер записи: 32
03-03-2022 дата публикации

IN-LINE POLYMERIZATION FOR CUSTOMIZABLE COMPOSITE FIBER MANUFACTURE IN ADDITIVE MANUFACTURING

Номер: US20220063190A1
Автор: DE BACKER WOUT, KAY VALERIE, VAN TOOREN MICHAEL
Принадлежит:

A composite fiber for use in additive manufacturing such as fused filament fabrication is described along with methods of its construction and use. The composite fiber includes a single continuous fiber (e.g., a continuous carbon roving) and a polymer (e.g., a high glass transition polymer) in intimate contact. The composite fiber is formed through immersion of the continuous fiber in a series of two or more solutions that together include monomer(s), catalysts, or other materials for generating the polymer as the continuous fiber moves through the solutions.

Подробнее
Номер записи: 33
18-02-2021 дата публикации

Polyimide-based composite film and display device comprising same

Номер: US20210051811A1
Автор: Dawoo JEONG, Jin Woo Lee, Jung Hee KI, Seung Yong PYUN, Sunhwan Kim, Yun Hee Seo
Принадлежит: SK Microworks Solutions Co Ltd, SKC Co Ltd, SKC Hi Tech and Marketing Co Ltd

Embodiments relate to a polyimide-based composite film, which comprises a base film comprising a polyimide-based resin; and a functional layer disposed on the base film, wherein when the side of the functional layer located opposite to the side in contact with the base film is referred to as a first side and when the side of the base film in contact with the functional layer is referred to as a second side, the leveling index represented by Equation 1 is less than 0.75.

Подробнее
Номер записи: 34
03-03-2022 дата публикации

POLYMER FILAMENTS COMPRISING AN AQUEOUS-SOLUBLE IMIDE POLYMER AND USE THEREOF AS A SACRIFICIAL PRINTING MATERIAL IN ADDITIVE MANUFACTURING

Номер: US20220064462A1
Автор: CHOPRA Naveen, NOSELLA Kimberly D., VEREGIN Richard Philip Nelson
Принадлежит: XEROX CORPORATION

When making parts by additive manufacturing, particularly by fused filament fabrication, it is sometimes necessary to include a removable support during part fabrication due to the shape of the part. An overhang, for instance, may be fabricated using a support structure, which is subsequently eliminated following polymer matrix consolidation. Elimination of a removable support following part fabrication may be problematic in some instances. Polymer filaments suitable for forming removable supports during additive manufacturing may comprise at least one imide polymer having at least partial solubility in aqueous fluids. Imide polymers may include, for example, polyimides and polyesterimides. Additive manufacturing processes may comprise forming a supported part by depositing a build material and a removable support comprising an imide polymer, wherein at least a portion of the build material is deposited upon the removable support. An unsupported part may be formed following exposure of the supported part to an aqueous fluid.

Подробнее
Номер записи: 35
26-02-2015 дата публикации

POLYMER/COMPOSITE FIREARMS AND A PROCESS FOR STRENGTHENING POLYMER/COMPOSITE FIREARMS

Номер: US20150052794A1
Автор: Underwood James Matthew, Underwood Larry Cullen
Принадлежит:

A strengthened firearm includes at least one metal/composite material formed into at least one firearm component, and a polymer/composite material combined with the at least one firearm component. The metal/composite material replaces the polymer/composite material in a specific area or component of the firearm that may be weak or tend to fail earlier than other areas or components of a polymer/composite firearm. The method of combining the multiple materials allows for additional strength in the firearm. 1. A strengthened firearm comprising:at least one metal/composite material formed into at least one firearm component; anda polymer/composite material combined with the at least one firearm component.2. The strengthened firearm of claim 1 , wherein the at least one firearm component is a stock/buffer tube mount.3. The strengthened firearm of claim 1 , wherein the at least one firearm component is a barrel receiver.4. The strengthened firearm of claim 1 , wherein the polymer/composite material is combined with the at least one firearm component by over molding.5. The strengthened firearm of claim 1 , wherein the polymer/composite material is combined with the at least one firearm component by insert molding.6. The strengthened firearm of claim 1 , wherein the polymer/composite material is combined with the at least one firearm component by fastening the at least one firearm component to the polymer/composite material.7. The strengthened firearm of claim 1 , wherein the polymer/composite material is combined with the at least one firearm component by gluing the polymer/composite material to the at least one metal/composite component.8. A method for creating a strengthened polymer/composite firearm comprising:forming at least one metal/composite material to a desired shape of at least one firearm component;inserting the at least one metal/composite component in a polymer/composite firearm mold;adding a polymer/composite material into the polymer/composite firearm mold ...

Подробнее
Номер записи: 36
26-02-2015 дата публикации

BINDERS AND ASSOCIATED PRODUCTS

Номер: US20150053114A1
Автор: Hampson Carl, Jackson Roger, Pacorel Benedicte
Принадлежит: KNAUF INSULATION

The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state. 1. A water-soluble pre-reacted binder composition , comprising the reaction product(s) of(i) at least one carbohydrate component, and(ii) at least one nitrogen-containing component.2. The pre-reacted binder composition according to claim 1 , wherein said binder composition comprises at least one pre-polymer having a molecular weight in the range of 1 to 500 kDa.3. The pre-reacted binder composition according to claim 2 , wherein said at least one pre-polymer is contained in an amount of 2 wt.-% or more claim 2 , based on the total weight of the binder composition.4. The pre-reacted binder composition according to claim 1 , wherein said binder composition comprises at least one pre-polymer having a molecular weight in the range of more than 80 to 500 kDa (high molecular-weight pre-polymer).5. The pre-reacted binder composition according to claim 4 , wherein said at least one high molecular-weight pre-polymer is contained in an amount of 0.2 wt.-% or more claim 4 , based on the total weight of the binder composition.6. The pre-reacted binder composition according to claim 1 , wherein said binder composition comprises at least one pre-polymer having a molecular weight in the range of more than 10 to 80 kDa (mid molecular weight pre-polymer).7. The pre-reacted binder composition according to claim 6 , wherein said at least one mid molecular weight pre-polymer is contained in an amount of 0.3 wt.-% or more claim 6 , based on the total weight of the binder composition.8. The pre-reacted binder composition according to claim 1 , wherein said binder composition comprises one or more ...

Подробнее
Номер записи: 37
25-02-2016 дата публикации

POLYAMIC ACID, VARNISH CONTAINING SAME, AND POLYIMIDE FILM

Номер: US20160053135A1
Автор: Fukukawa Kenichi, Okazaki Masaki, Okubo Atsushi, Sakata Yoshihiro, Urakami Tatsuhiro
Принадлежит: Mitsui Chemical, Inc.

The present invention addresses the problem of providing a high-transparency polyimide film in which the thickness-direction phase difference Rth is kept within a predetermined range. The present invention also addresses the problem of providing a polyamic acid and a varnish used to obtain the polyimide film. In order to overcome the aforementioned problem, the present invention is a polyimide film containing a polyimide obtained by bringing about a reaction between a tetracarboxylic dianhydride and a diamine, the polyimide film having (a) a thickness-direction phase difference Rth of −5 to 100 nm per 10 μm of thickness, (b) a transmittance of 80% or more with respect to light having a wavelength of 400 nm, (c) a haze of 3% or less, and (d) a glass transition point of 250° C. or higher. 1. A polyimide film comprising a polyimide obtained by reacting a tetracarboxylic dianhydride with a diamine , wherein the polyimide film has the following characteristics:(a) a thickness direction retardation Rth as calculated by the below equation of −5 nm or more and 100 nm or less per thickness of 10 μm;(b) a light transmittance at 400 nm wavelength of 80% or more;(c) a haze of 3% or less; and {'br': None, 'i': Rth', 'nz', 'nx+ny', 'd,, 'Retardation (nm)=[−()/2]×'}, '(d) a glass transition temperature of 250° C. or higher,'}wherein nx, ny and nz are respective refractive indexes for x-, y- and z-axis directions of the polyimide film measured using light with a wavelength of 550 nm; and d is a thickness of the polyimide film.6. A touch panel display comprising the polyimide film according to .7. A liquid crystal display comprising the polyimide film according to .8. An organic EL display comprising the polyimide film according to .9. A polyimide film comprising polyimide layer A and polyimide layer B wherein:either one or both of the polyimide layer A and the polyimide layer B have a thickness direction retardation Rth as calculated by the below equation of −5 nm or more and 100 ...

Подробнее
Номер записи: 38
23-02-2017 дата публикации

Thermoplastic Composite Material with Improved Smoke Generation, Heat Release and Mechanical Properties

Номер: US20170050395A1
Автор: Ebeling Thomas Arnold, Vos Sandra Fritz
Принадлежит:

A fiber-reinforced thermoplastic composite material having an advantageous combination of smoke generation, heat release, and mechanical property characteristics. The composite generally comprises a fiber-reinforced thermoplastic core containing discontinuous reinforcing fibers bonded together with one or more thermoplastic resins. The core material may further comprise at least one first skin material applied to a first surface of the core and/or one or more second skin material applied to a second surface of the core material. The thermoplastic core material has a maximum smoke density D(4 minutes) of less than 200 as measured in accordance with ASTM E662, a maximum heat release (5 minutes) of less than 65 kW/mas measured in accordance with FAA Heat release test FAR 25.853 (a) Appendix F, Part IV (OSU 65/65), and an average total heat release (2 minutes) of less than 65 kW/mas measured in accordance with FAA Heat release test FAR 25.853 (a) Appendix F, Part IV (OSU 65/65). The invention is useful in the manufacture of articles for aircraft, automotive, railcar, locomotive, bus, marine, aerospace and construction in which the certain advantages may be provided over other materials utilized for such applications. 126-. (canceled)27. A method of producing a thermoplastic core comprising:adding a plurality of discontinuous reinforcing fibers and a thermoplastic resin to an agitated liquid-containing foam to form a dispersed mixture of thermoplastic resin and reinforcing fibers;depositing the dispersed mixture of reinforcing fibers and thermoplastic resin onto a forming support element;evacuating the liquid from the deposited, dispersed mixture to form a web;heating the web above a softening temperature of the thermoplastic resin; and{'sup': 2', '2, 'compressing the web to form a thermoplastic core comprising a maximum smoke density Ds (4 minutes) of less than 200 as measured in accordance with ASTM E662, a maximum heat release (5 minutes) of less than 65 kW/mas ...

Подробнее
Номер записи: 39
15-05-2014 дата публикации

In-mould-foaming process using a foamable medium with outer layers, and plastics moulding obtainable therefrom

Номер: US20140134422A1
Автор: Arnim Kraatz, Axel Zajonz, Matthias Alexander Roth, Rainer Zimmermann
Принадлежит: Evonik Industries AG

The use of a solid, foamable plastic, for example poly(meth)acrylimide (PMI), polyvinyl chloride (PVC), polyurethane (PU) or poly(meth)acrylate (PMMA), permits the production of a plastics foam composite moulding which is in essence homogeneous and which, in the course of the foaming process at about 200 degrees Celsius, forms a stable mechanical bond with an outer layer or a plurality of outer layers or with a plurality of identical or different outer layers.

Подробнее
Номер записи: 40
05-03-2015 дата публикации

LENS ASSEMBLIES AND OPTICAL CONNECTORS INCORPORATING THE SAME

Номер: US20150063764A1
Автор: Isenhour Micah Colen, Knecht Dennis Michael, Luther James Phillip
Принадлежит: Corning Cable Systems LLC

Lens assemblies including a substrate and a plurality of mechanically isolated lenses coupled to the substrate are disclosed. The substrate may have a low coefficient of thermal expansion. Optical connectors including the lens assemblies described herein, as well as methods of fabricating a lens assembly, are also disclosed. In one embodiment, a lens assembly includes a substrate having a first surface, and a lens layer including a plurality of lenses. A coefficient of thermal expansion of the substrate is different from a coefficient of thermal expansion of the plurality of lenses. The lens layer is coupled to the first surface of the substrate, and each lens of the plurality of lenses is mechanically isolated from adjacent lenses of the plurality of lenses by gap regions within the lens layer. 1. A lens assembly comprising:a substrate comprising a first surface; and a coefficient of thermal expansion of the substrate is different from a coefficient of thermal expansion of the plurality of lenses;', 'the lens layer is coupled to the first surface of the substrate; and', 'each lens of the plurality of lenses is mechanically isolated from adjacent lenses of the plurality of lenses by gap regions within the lens layer., 'a lens layer comprising a plurality of lenses, wherein2. The lens assembly of claim 1 , wherein the coefficient of thermal expansion of the substrate is less than the coefficient of thermal expansion of the plurality of lenses.3. The lens assembly of claim 1 , wherein the lens layer is made from an Ultem resin.4. The lens assembly of claim 1 , wherein the substrate is glass.5. The lens assembly of claim 1 , wherein portions of lens layer material extend beyond a perimeter of one or more individual lenses of the plurality of lenses.6. The lens assembly of claim 1 , wherein each lens is disposed in a tab extending from a perimeter of the lens layer claim 1 , and the lens layer further comprises a discontinuous web portion.7. The lens assembly of claim 1 ...

Подробнее
Номер записи: 41
05-03-2015 дата публикации

Composite Blade Made by Additive Manufacturing

Номер: US20150064015A1
Автор: Perez Rafael
Принадлежит:

The present application relates to a blade of a rectifier of a low pressure compressor of an axial turbomachine. The blade can also be a rotor and/or turbine blade. The blade includes a composite material with a matrix and a reinforcement comprising a mesh with rods. The rods of the reinforcement are connected to each other and are distributed throughout the volume between the pressure side surface and the suction side surface of the blade. The mesh forms a three-dimensional structure extending over the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge. The present application also relates to an iterative method for manufacturing a blade composite where the reinforcement is formed by additive layer manufacturing based on titanium powder and then placed in an injection mold. 1. A blade for a turbomachine , comprising:a leading edge;a trailing edge;a pressure side surface; anda suction side surface;wherein both surfaces extend from the leading edge to the trailing edge;wherein the blade is formed from a composite material having a matrix and a reinforcement having a mesh; andwherein the mesh forms a three-dimensional structure which extends over the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge.2. The blade according to claim 1 , wherein the mesh comprises:an envelope which defines a space occupying the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge, the space of the envelope occupies the majority of the volume between the pressure side surface and the suction side surface.3. The blade according to claim 1 , wherein the three- ...

Подробнее
Номер записи: 42
05-03-2015 дата публикации

Composite Blade Made by Additive Manufacturing

Номер: US20150064016A1
Автор: Cortequisse Jean-Francois
Принадлежит:

The present application relates to a blade of low pressure rectifier axial turbomachine. The blade can also be a rotor blade and/or a turbine blade. The blade includes a composite material with a matrix and a reinforcement that includes a mesh forming a three dimensional structure with a plurality of rods that describe a three-dimensional mesh based on polyhedrons. The three-dimensional structure extends over the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge. The rods of the reinforcement are bonded to each other and are distributed throughout the volume between the pressure side surface and the suction side surface of the blade. The rods form a three-dimensional mesh occupying the entire blade. The present application also relates to an iterative method for manufacturing a blade by additional layer manufacturing. 1. A blade for a turbomachine , comprising:a leading edge;a trailing edge;a pressure side surface; anda suction side surface;wherein the pressure side surface and the suction side surface extend from the leading edge to the trailing edge;wherein the blade is formed from a composite material having a matrix and a reinforcement having a mesh; andwherein the mesh forms a three-dimensional structure which extends over the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge.2. The blade according to claim 1 , wherein the three-dimensional reinforcement structure is a unitary structure with rods interconnected with material continuity by connecting nodes.3. The blade according to claim 2 , wherein the rods are oriented in at least three non-coplanar directions.4. The blade according to claim 2 , wherein the rods are oriented in at least four non-coplanar directions.5. The ...

Подробнее
Номер записи: 43
27-02-2020 дата публикации

POLYARYLETHER KETONE IMIDE ADHESIVES

Номер: US20200062905A1
Автор: Bogucki Gregg R., Childers Christopher H., HEINZ Stephen R., STEINMAN Christopher S.
Принадлежит:

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formula (IV): 2. The method of claim 1 , wherein introducing the aluminum chloride into the reactor comprises introducing the aluminum chloride into the reactor at a temperature of about −10° C. claim 1 , followed by allowing a temperature of the composition to increase to about 10° C. claim 1 , followed by cooling the composition to a temperature of about −10° C.3. The method of claim 1 , further comprising introducing a solvent into the reactor claim 1 , wherein the composition comprises the solvent.4. The method of claim 3 , wherein the solvent is selected from the group consisting of o-dichlorobenzene claim 3 , dichloromethane claim 3 , dichloroethane claim 3 , and mixture(s) thereof.5. The method of claim 3 , wherein introducing the solvent is performed by preheating the solvent before introducing the solvent into the reactor.6. The method of claim 5 , wherein preheating is performed at a temperature of from about 160° C. to about 190° C.7. The method of claim 1 , wherein mixing is performed at a temperature of from about −30° C. to about 25° C.8. The method of claim 1 , wherein obtaining the polymer comprises introducing water and ammonia to the composition.10. The method of claim 9 , wherein the molecular weight of the polymer is from about 90 kDa to about 110 kDa.11. The method of claim 9 , wherein the polymer is a random copolymer.12. The method of claim 9 , wherein the polymer is a block copolymer.14. The method of claim 13 , wherein the molecular weight of the polymer is from about 90 kDa to about 110 kDa.15. The method of claim 13 , wherein the polymer is a random copolymer.16. The method of claim 13 , wherein the polymer is a block copolymer.17. The method of claim 13 , wherein the adherend is selected from the group consisting of a thermoset composite claim 13 , a thermoplastic composite claim 13 ...

Подробнее
Номер записи: 44
08-03-2018 дата публикации

METHOD FOR PROCESSING A HIGH TEMPERATURE RESISTANT THERMOSETTING MATERIAL

Номер: US20180066136A1
Автор: Biradar Amitkumar, Gharda Keki Hormusji, Parida Tushar R., TRIVEDI Prakash D.
Принадлежит:

The present disclosure provides a polymeric composition resistant to temperatures comprising Poly 2,5rBenzimidazole having intrinsic viscosity (I.V.) between 1.0 and 2.5; and at least one binder having a glass transition temperature less than the glass transition temperature of Poly2,5-Benzimidazole and intrinsic viscosity ranging between 0.2 and 1.5. The present disclosure also provides a process for preparing the polymeric composition resistant to temperatures. 2. The polymeric composition as claimed in claim 1 , wherein the binder is selected from the group consisting of Poly Ether Ketone (PEK) claim 1 , Poly Aryl Ether Ketone (PAEK) claim 1 , Poly Ether Ether Ketone (PEEK) claim 1 , Poly Ether Ketone Ketone (PEKK) claim 1 , Polyphenelene Sulfide (PPS) claim 1 , Polyether Imide (PEI) Poly Ether Sulfones (PES) and Polyphenyl Sulfone (PPSU).3. The polymeric composition as claimed in claim 1 , wherein the binder is selected from the group consisting of Poly Ether Ether Ketone (PEEK) and Poly Ether Sulfone (PES).5. The process as claimed in claim 4 , wherein the binder is at least one compound having a glass transition temperature lower than the glass transition temperature of Poly 2 claim 4 ,5-Benzimidazole.6. The process as claimed in claim 4 , wherein the binder is selected from the group consisting of Poly Ether Ketone (PEK) claim 4 , Poly Aryl Ether Ketone (PAEK) claim 4 , Poly Ether Ether Ketone (PEEK) claim 4 , Poly Ether Ketone Ketone (PEKK) claim 4 , Polyphenelene Sulfide (PPS) claim 4 , Polyether Imide (PEI) Poly Ether Sulfones (PES) and Polyphenyl Sulfone (PPSU).7. The process as claimed in claim 4 , wherein the inherent viscosity (I.V.) of Poly 2 claim 4 ,5-Benzimidazole ranges between 1.0 and 2.5.8. The process as claimed in claim 4 , wherein the inherent viscosity of the binder ranges between 0.2 and 1.5.9. The process as claimed in claim 4 , wherein the ratio of Poly 2 claim 4 ,5-Benzimidazole to the binder ranges from 95:5 and 5:95. The present ...

Подробнее
Номер записи: 45
09-03-2017 дата публикации

CONTROLLABLE AND REVERSIBLE PH-RESPONSIVE ROLLABLE 2D NANO STRUCTURES

Номер: US20170066178A1
Автор: BOHRA Murtaza, GALEA Antony Douglas, GRAMMATIKOPOULOS Panagiotis, Kim Jeong-Hwan, SINGH Vidya Dhar, Sowwan Mukhles Ibrahim
Принадлежит: OKINAWA NSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL CORPORATION

A two-dimensional nano-sheet that is foldable in response to a surrounding pH value includes a polyethyleneimine (PEI) chain taking a two-dimensional form; and a plurality of domains made of gold, attached to the PEI chain, the plurality of domains of gold forming a percolating gold film on the PEI chain. 1. A method for making pH responsive two-dimensional nano-sheets , comprising:forming a polyethyleneimine (PEI) matrix on a substrate;depositing gold on the PEI matrix until a percolating gold film is formed thereon; anddipping the PEI matrix with the percolating gold film into a solution to exfoliate the PEI matrix with the gold into a plurality of two-dimensional sheets, separated from the substrate, the resulting sheets being foldable in response to a pH value surrounding thereto.2. The method according to claim 1 , further comprising: purifying and resuspending the plurality of sheets in deionized water.3. The method according to claim 1 , wherein the solution is a methanol solution.4. The method according to claim 1 , wherein the step of dipping includes applying ultra-sonication to the PEI matrix with the percolating gold film in order to exfoliate into the plurality of two-dimensional sheets.5. The method according to claim 1 , wherein the substrate is a silicon wafer.6. The method according to claim 1 , wherein the step of depositing the gold on the PEI matrix includes sputtering the gold onto the PEI matrix on the substrate until the percolating gold film is formed thereon.7. A two-dimensional nano-sheet that is foldable in response to a surrounding pH value claim 1 , comprising:a polyethyleneimine (PEI) chain taking a two-dimensional form; anda plurality of domains made of gold, attached to the PEI chain, the plurality of domains of gold forming a percolating gold film on the PEI chain,wherein the nano-sheet is foldable in response to a surrounding pH value.8. The two-dimensional nano-sheet according to claim 7 , wherein the two-dimensional nano-sheet is ...

Подробнее
Номер записи: 46
11-03-2021 дата публикации

ADDITIVE MANUFACTURING EMPLOYING SOLVENT-FREE POLYIMIDE-CONTAINING FORMULATIONS

Номер: US20210070941A1
Автор: KUNO Lev, POKRASS Mariana, SHPAYZER Elena
Принадлежит: Stratasys Ltd.

Formulations usable in additive manufacturing, 3D inkjet printing in particular, of a three-dimensional object that contains a polyimide material, and additive manufacturing utilizing same are provided. The formulations contain a polyimide precursor (e.g., a bismaleimide) and an additional curable material, which is a multifunctional curable material, and are devoid of an organic solvent. 150-. (canceled)51. A formulation comprising a polyimide precursor and a multifunctional curable material , the formulation being devoid of an organic solvent.52. The formulation of claim 51 , wherein said organic solvent is a polar organic solvent.53. The formulation of claim 51 , wherein said organic solvent has a boiling temperature lower than 190° C. and/or an evaporation rate lower than 1 claim 51 , or lower than 0.5.54. The formulation of claim 51 , being devoid of a bis-allyl-nadi-imide compound.55. The formulation of claim 51 , featuring a viscosity of from about 16 to about 20 centipoises at 70° C.56. The formulation of claim 51 , wherein said polyimide precursor is bismaleimide.58. The formulation of claim 51 , wherein a weight ratio of said polyimide and said multifunctional curable material in the formulation ranges from 50:50 to 90:10.59. The formulation of claim 51 , wherein an amount of the multifunctional curable material is less than 25 weight percents of the total weight of the formulation.60. The formulation of claim 51 , wherein said multifunctional curable material features a viscosity at room temperature of less than 15 centipoises or less than 10 centipoises; and/or a flash point at least 10° C. higher than a temperature of applied to the formulation during the method.61. A method of additive manufacturing of a three-dimensional object which comprises claim 51 , in at least a portion thereof claim 51 , a polyimide-containing material claim 51 , the method comprising sequentially forming a plurality of layers in a configured pattern corresponding to the shape ...

Подробнее
Номер записи: 47
28-02-2019 дата публикации

HIGH-CONDUCTIVITY TWO-DIMENSIONAL POLYANILINE NANOSHEETS AND METHOD FOR FABRICATING THE SAME

Номер: US20190066867A1
Автор: Choi Il Young, LEE Joung Phil, Park Moon Jeong
Принадлежит:

The present invention relates to a new method of synthesizing two-dimensional polyaniline (PANI) nanosheets using ice as a removable hard template. The method comprises polymerizing aniline on an ice surface. The synthesized PANI nanosheets show distinctly high current flows of 5.5 mA at 1 V and a high electrical conductivity of 35 S/cm, which mark a significant improvement over previous values on other PANIs reported over the past decades. These improved electrical properties of the PANI nanosheets are attributed to the long-range ordered edge-on n-stacking of the quinoid ring, ascribed to the ice surface-assisted vertical growth of PANI. The PANI nanosheet can be easily transferred onto various types of substrates via float-off from the ice surfaces. In addition, PANI can be patterned into any shape using predetermined masks, and this is expected to facilitate the eventual convenient and inexpensive application of conducting polymers in versatile electronic device forms. 1. A method for fabricating a high-conductivity polyaniline nanosheet , comprising polymerizing aniline on an ice surface.2. The method of claim 1 , wherein the aniline is provided in a liquid form to the ice surface by dropping claim 1 , casting or coating.3. The method of claim 1 , wherein the polymerization is chemical oxidative polymerization.4. The method of claim 1 , wherein the polymerization is performed at a temperature of 0° C. or lower.5. The method of claim 1 , further comprising melting the ice to separate the polymerized aniline.6. The method of claim 1 , wherein the ice is an ice substrate.7. The method of claim 1 , wherein the nanosheet has a thickness of 10-40 nm.8. A method for fabricating a high-conductivity polyaniline nanopattern claim 1 , comprising: forming a predetermined pattern on an ice surface; and polymerizing aniline on the ice surface claim 1 , thereby fabricating a polyaniline nanosheet according to the predetermined pattern.9. A highly conductive crystalline ...

Подробнее
Номер записи: 48
19-03-2015 дата публикации

Hose with Rubber and Plastic

Номер: US20150075666A1
Автор: Aaron David CLARK, Gina Theresa CLARK
Принадлежит: Eaton Corp

A hose is provided comprising a rubber backing layer directly bonded to a continuous polyamide layer without an intervening adhesive layer, wherein the hose exhibits increased low and high temperature capability and decreased permeation compared to standard automotive refrigerant hoses.

Подробнее
Номер записи: 49
19-03-2015 дата публикации

METHOD OF MANUFACTURING POLYMER FILM AND POLYMER FILM STRETCHING APPARATUS THEREFOR

Номер: US20150076719A1
Автор: AHN Chan Jae, CHANG Won Suk, CHOI Sung Won
Принадлежит:

A method of manufacturing a polyimide film includes: extruding a polyimide film including polyimide and a solvent; first drying the extruded polyimide film; stripping the first-dried polyimide film; second drying the stripped polyimide film to remove a residual solvent in the polyimide film; and stretching the second-dried polyimide film, wherein an amount of the residual solvent in the second-dried polyimide film is equal to or less than about 10 weight percent. 1. A method of manufacturing a polyimide film , the method comprising:extruding a polyimide film comprising a polyimide and a solvent;first drying the extruded polyimide film;stripping the first-dried polyimide film;second drying the stripped polyimide film to remove a residual solvent in the polyimide film; andstretching the second-dried polyimide film in a width direction,wherein an amount of the residual solvent in the second-dried polyimide film is equal to or less than about 10 weight percent.2. The method of claim 1 , wherein the amount of the residual solvent in the second-dried polyimide film is equal to or less than about 5 weight percent.3. The method of claim 1 ,wherein the second drying comprises stretching the stripped polyimide film in a length direction which is perpendicular to the width direction.4. The method of claim 3 , wherein a stretching ratio of the stretching in the length direction ranges from about 0.95 to about 1.0.5. The method of claim 4 , wherein the stretching ratio of the stretching in the length direction ranges from about 0.965 to about 0.995.6. The method of claim 1 , wherein a temperature in the second drying is greater than a maximum temperature in the first drying and less than a maximum temperature in the stretching.7. The method of claim 6 , whereinthe maximum temperature in the first drying ranges from about 100° C. to about 220° C.,the temperature in the second drying ranges from about 150° C. to about 250° C., andthe maximum temperature in the stretching ranges ...

Подробнее
Номер записи: 50
15-03-2018 дата публикации

MULTILAYER FIBER REINFORCEMENT DESIGN FOR 3D PRINTING

Номер: US20180072040A1
Автор: Benhaim David Steven, Mark Gregory Thomas, Parangi Abraham Lawrence, Sklaroff Benjamin Tsu, WOODRUFF Rick Bryan
Принадлежит:

A method comprising receiving a first 3D toolpath defining a fill material curved shell, receiving first 2D toolpaths defining support material flat shells, receiving a second 3D toolpath defining a long fiber composite material curved shell, the long fiber composite material including a filament having a matrix embedding fibers having a length longer than two times a diameter of the filament, actuating a fill material deposition head to trace the first 3D toolpath to deposit the fill material curved shell non-parallel to a printing substrate, actuating a support material deposition head to trace the first 2D toolpaths to deposit support material in a succession of substantially flat shells, and actuating a long fiber deposition head to trace the second 3D toolpath non-parallel to the printing substrate to deposit the long fiber composite material curved shell to enclose at least a portion of the fill material curved shell. 1. A method for depositing a 3D printed part with a composite material 3D printer , comprising:receiving a first 3D toolpath defining a fill material curved shell;receiving first 2D toolpaths defining support material flat shells;receiving a second 3D toolpath defining a long fiber composite material curved shell, the long fiber composite material including a filament having a matrix embedding fibers having a length longer than two times a diameter of the filament;actuating a fill material deposition head to trace the first 3D toolpath to deposit the fill material curved shell at least in part non-parallel to a printing substrate;actuating a support material deposition head to trace the first 2D toolpaths to deposit support material in a succession of substantially flat shells; andactuating a long fiber deposition head to trace the second 3D toolpath at least in part non-parallel to the printing substrate to deposit the long fiber composite material curved shell to enclose at least a portion of the fill material curved shell.2. The method ...

Подробнее
Номер записи: 51
18-03-2021 дата публикации

Method for producing fiber-reinforced plastic from prepreg

Номер: US20210078266A1
Автор: Mikio Hiramatsu, Tadashi JYUNISHO
Принадлежит: IHI Corp

A method for producing a fiber-reinforced plastic from a prepreg is provided with: executing a first heating to retain the prepreg in a first atmosphere, a temperature of the first atmosphere being above a room temperature and not higher than 100 degrees C.; after executing the first heating, executing a second heating to retain the prepreg in a second atmosphere, a temperature of the second atmosphere being not lower than 150 degrees C. and lower than a curing temperature of the prepreg; and after executing the second heating, executing a third heating to retain the pregreg in a third atmosphere, a temperature of the third atmosphere being higher than the curing temperature, wherein at least the first atmosphere and the second atmosphere are under reduced pressure below an atmospheric pressure.

Подробнее
Номер записи: 52
14-03-2019 дата публикации

POLY(AMIDE-IMIDE) COPOLYMER, COMPOSITION FOR PREPARING POLY(AMIDE-IMIDE) COPOLYMER, ARTICLE INCLUDING POLY(AMIDE-IMIDE) COPOLYMER, AND DISPLAY DEVICE INCLUDING THE ARTICLE

Номер: US20190077916A1
Автор: AHN Chanjae, CHANG Won Suk, CHOI Sungwon, JEONG Boreum, Jo A Ra
Принадлежит:

A poly(amide-imide) copolymer that is a reaction product of a substituted or unsubstituted linear aliphatic diamine including two terminals, a diamine represented by Chemical Formula 1, a dicarbonyl compound represented by Chemical Formula 2, and a tetracarboxylic acid dianhydride represented by Chemical Formula 3: 2. The poly(amide-imide) copolymer according to claim 1 , wherein the substituted or unsubstituted linear aliphatic diamine comprises an amino group located at each end of the two terminals thereof claim 1 , and wherein the substituted or unsubstituted linear aliphatic diamine is a substituted or unsubstituted C1 to C30 saturated or unsaturated linear aliphatic diamine.3. The poly(amide-imide) copolymer according to claim 1 , wherein the substituted or unsubstituted linear aliphatic diamine includes an amino group located at each end of the two terminals thereof claim 1 , and wherein the substituted or unsubstituted linear aliphatic diamine is a substituted or unsubstituted C1 to C20 saturated linear aliphatic diamine.4. The poly(amide-imide) copolymer according to claim 1 , wherein the substituted or unsubstituted linear aliphatic diamine is selected from methylene diamine claim 1 , ethylene diamine claim 1 , 1 claim 1 ,3-propane diamine claim 1 , 1 claim 1 ,4-tetramethylene diamine claim 1 , 1 claim 1 ,5-pentamethylene diamine claim 1 , 1 claim 1 ,6-hexamethylene diamine claim 1 , 1 claim 1 ,7-heptamethylene diamine claim 1 , 1 claim 1 ,8-octamethylene diamine claim 1 , 1 claim 1 ,9-nanomethylene diamine claim 1 , 1 claim 1 ,10-decamehtylene diamine claim 1 , 1 claim 1 ,11-undecamethylene diamine claim 1 , 1 claim 1 ,12-dodecamethylene diamine claim 1 , and a combination thereof.5. The poly(amide-imide) copolymer according to claim 1 , wherein the diamine represented by Chemical Formula 1 comprises a ring system comprising two C6 to C12 aromatic rings linked by a single bond claim 1 , wherein each of the two C6 to C12 aromatic rings are independently ...

Подробнее
Номер записи: 53
24-03-2016 дата публикации

POLYIMIDE RESIN COMPOSITION AND VARNISH PRODUCED FROM TERMINAL-MODIFIED IMIDE OLIGOMER PREPARED USING 2-PHENYL-4,4'-DIAMINODIPHENYL ETHER AND THERMOPLASTIC AROMATIC POLYIMIDE PREPARED USING OXYDIPHTHALIC ACID, POLYIMIDE RESIN COMPOSITION MOLDED ARTICLE AND PREPREG HAVING EXCELLENT HEAT RESISTANCE AND MECHANICAL CHARACTERISTIC, AND FIBER-REINFORCED COMPOSITE MATERIAL THEREOF

Номер: US20160083618A1
Автор: Ishida Yuichi, Miyauchi Masahiko, Ogasawara Toshio, YOKOTA Rikio
Принадлежит:

An imide resin composition including a terminal-modified imide oligomer of General Formula (1) and a thermoplastic aromatic polyimide of General Formula (2). (In Formula (1), either Ror Rshows a phenyl group and the other shows a hydrogen atom; Rand Rshow a divalent residue of aromatic diamine; Rand Rshow a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m≧1, n≧0, 1≦m+n≦20, and 0.05≦m/(m+n)≦1; and an arrangement of repeating units may be either a block or random.) (In Formula (2), Rand Rshow a divalent residue of aromatic diamine; Rshows a tetravalent residue of aromatic tetracarboxylic acid; m and n satisfy relationships of m≧1 and n≧0, and an arrangement of repeating units may be either a block or random.) 4. The imide resin composition according to claim 1 , wherein in the terminal-modified imide oligomer represented by General Formula (1) claim 1 , a part of m groups Rand n groups Rshow a tetravalent residue of 1 claim 1 ,2 claim 1 ,4 claim 1 ,5-benzene tetracarboxylic acid and the rest thereof show a tetravalent residue of 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-biphenyl tetracarboxylic acid.5. A varnish comprising the imide resin composition according to dissolved in an organic solvent.6. A powdery imide resin composition obtained by removing an organic solvent from the varnish according to .7. A film-shaped imide resin composition molded article obtained by coating a support with the varnish according to claim 5 , and removing an organic solvent from the varnish.8. An imide resin composition molded article obtained by thermally curing the varnish according to .9. An imide resin composition molded article obtained by heating the powdery imide resin composition according to in a melted state claim 6 , thereby making a molecular weight of the terminal-modified imide oligomer component larger.10. An imide resin composition molded article obtained by heating the film-shaped imide resin composition molded article according to in ...

Подробнее
Номер записи: 54
26-03-2015 дата публикации

Coating composition

Номер: US20150086798A1
Автор: JIN Wu, Jonathan H. Herko, Lin Ma, Varun Sambhy
Принадлежит: Xerox Corp

An endless belt comprising a polyimide-based substrate layer. The polyimide-based substrate layer is made by curing a mixture comprising a polyimide precursor and a polyalkylene glycol silicone phosphate. A method of making the polyimide-based substrate layer and a coating composition for making the endless belt are also disclosed.

Подробнее
Номер записи: 55
23-03-2017 дата публикации

Polyetherimide Compatible Polymer Blends for Capacitor Films

Номер: US20170084394A1
Автор: NIEMEYER Matthew F., PFEIFFENBERGER NEAL, SANNER Mark
Принадлежит:

A uniaxially-stretched, high yield extruded capacitor film comprising a compatible polymer blend comprising a polyetherimide and a polyphenylene ether sulfone, wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine, a p-phenylenediamine, or combinations thereof, wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine, wherein the polyphenylene ether sulfone comprises both an ether linkage and an aryl sulfone linkage in its backbone, wherein the compatible polymer blend comprises a dispersed phase having an average cross section of from equal to or greater than about 0.01 microns to about 20 microns, and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the compatible polymer blend entering an extruder used for manufacturing the capacitor film, based on the total weight of the compatible polymer blend prior to entering the extruder. 1. A uniaxially-stretched , high yield extruded capacitor film comprising a compatible polymer blend comprising a polyetherimide and a polyphenylene ether sulfone; wherein the polyetherimide comprises units derived from polymerization of an aromatic dianhydride with a diamine comprising a m-phenylenediamine , a p-phenylenediamine , or combinations thereof; wherein the polyetherimide is endcapped with a substituted or unsubstituted aromatic primary monoamine; wherein the polyphenylene ether sulfone comprises both an ether linkage and an aryl sulfone linkage in its backbone; wherein the compatible polymer blend comprises a dispersed phase having an average cross section of from equal to or greater than about 0.01 microns to about 20 microns; and wherein the high yield extruded capacitor film comprises equal to or greater than about 90 wt. % of the compatible polymer blend entering an extruder used for manufacturing the capacitor film , based on the total ...

Подробнее
Номер записи: 56
21-03-2019 дата публикации

SUPPORTS FOR SINTERING ADDITIVELY MANUFACTURED PARTS

Номер: US20190084244A1
Автор: Mark Gregory Thomas
Принадлежит:

A method comprising depositing, in layers, a shrinking platform formed from a composite including metal particles embedded in a first matrix, depositing shrinking supports of the composite upon the shrinking platform, forming a separation clearance dividing at least one shrinking support into fragments, depositing, from the composite, a part upon the shrinking platform and shrinking supports, depositing a separation material intervening between the part and the shrinking supports, the separation material including a ceramic powder and a second matrix, and forming, from the shrinking platform, shrinking supports, separation material, and part, a portable platform assembly in a green state, wherein the shrinking support is configured to prevent the portable platform assembly from distorting from gravitational force during sintering of the metal particles of the assembly in a brown state, and wherein the ceramic powder of the separation material is configured to separate the shrinking support from the part following sintering. 1. A method of reducing distortion in an additively manufactured part , comprising:depositing, in successive layers, a shrinking platform formed from a composite, the composite including metal particles embedded in a first matrix;depositing, from the composite, a part upon the shrinking platform;depositing a sliding layer below the shrinking platform, of equal or larger surface area than a bottom of the shrinking platform, the sliding layer configured to reduce lateral resistance between the shrinking platform and an underlying surface during sintering; andforming, from the shrinking platform, sliding layer, and part, a portable assembly in a green state.2. The method according to claim 31 , wherein the shrinking platform interconnects the shrinking supports with one another claim 31 , and wherein the method further comprises:maintaining, with the first matrix and second matrix, a shape of the portable assembly during deposition;debinding the ...

Подробнее
Номер записи: 57
30-03-2017 дата публикации

FOAM MOULDING POLY(METH)ACRYLIMIDE PARTICLES IN CLOSED MOULDS FOR PRODUCING RIGID FOAM CORES

Номер: US20170087750A1
Автор: BECKER Florian, Bernhard Kay, BUEHLER Sebastian, DENK Tim, DONGMO FEUDJIO Alida Suzanne Blanche, HOLLEYN Denis, KRAATZ Amin, LIEBL Ina, RETTING Juergen
Принадлежит: Evonik Roehm GmbH

The invention relates to a process for the production of mould-foamed poly(meth)acrylimide (P(M)I) cores, in particular of polymethacrylimide (PMI) cores, which can be used by way of example in automobile construction or aircraft construction. A feature of this process is that polymer granules or polymer powder are charged to a compression mould where they are foamed. A particular feature of the process is that said two-shell compression mould has, respectively on both sides, a cavity that conforms to the shape and which serves for both the heating and the cooling of the granules and, respectively, of the rigid foam core produced therefrom. 1: A process for the production of a rigid poly(meth)acrylimide foam core , the process comprising:charging poly(meth)acrylimide particles to a mould comprising two shells,heating a space within the mould and simultaneously foaming the particles,cooling the space within the mould thereby forming a rigid poly(meth)acrylimide foam core,opening the mould and removing the rigid poly(meth)acrylimide foam core,wherein each shell of the mould comprises a cavity which conforms to an internal shape of the mould and which covers the area of the space within the mould, andwherein a heating liquid is passed through each cavity during the heating and a cooling liquid is passed through each cavity during the cooling.2: The process according to claim 1 , wherein the cavities conform to a shape of the space within the mould and that a thickness of the cavities between a side that conforms to the internal shape of the mould and a side that conforms to the shape of the space within the mould is from 2 to 20 cm.3: The process according to claim 1 , whereinthe heating liquid and the cooling liquid are the same type of liquid, andthe heating liquid and the cooling liquid are passed from two different reservoirs with different temperatures into each cavity, in a manner such that the temperature of the heating liquid is from 180 to 250° C. and the ...

Подробнее
Номер записи: 58
30-03-2017 дата публикации

Polyimide substrate and method for preparing the same, and flexible display

Номер: US20170088747A1
Автор: Hua Huang
Принадлежит: BOE Technology Group Co Ltd

The present invention relates to the field of displays and discloses a polyimide substrate, which is manufactured by reacting lignin, polyimide and a free radical initiator. Because lignin contains various active groups, for example, hydroxyl, carboxyl and aryl, etc., when it is introduced into the polymer structure of polyimide, the maximum absorption peak of the polymer can be made to redshift from less than or equal to 280 nm to less than or equal to 380 nm, so that a certain absorption and screening action may be laid on the light wave during a subsequent Laser Lift Off process, and the substrate and the liquid crystal may be prevented from being damaged during a Laser Lift Off process of the glass base substrate, thereby guaranteeing the display quality of the flexible display.

Подробнее
Номер записи: 59
28-03-2019 дата публикации

Human Tissue Isolation Pouch For Use With Pouch Sealer

Номер: US20190092506A1
Автор: Webb Charles
Принадлежит: Van der Stahl Scientific, Inc.

A human tissue isolation pouch for use with a sealer machine to indirectly seal human tissue medical pouches while avoiding cross contamination is herein disclosed. The human tissue isolation pouch comprises a rigid frame supporting a high temperature material and having one or more magnets for removably attaching the human tissue isolation pouch to a sealer machine. 1. A device for avoiding cross contamination during processing of human tissue comprising:a rigid frame forming a three-dimensional isolation pouch shape;one or more magnets for removably attaching the rigid frame to a sealer machine; anda high temperature material spanning the rigid frame to form an isolation pouch, wherein the isolation pouch includes a sealing envelope that receives a human tissue medical pouch and wherein the isolation pouch receives heat from the sealer machine and transfers heat to the human tissue medical pouch to seal the human tissue medical pouch.2. The device for avoiding cross contamination during processing of human tissue as recited in claim 1 , wherein the high temperature material can withstand temperatures up to at least 400 degrees Fahrenheit without deformation.3. The device for avoiding cross contamination during processing of human tissue as recited in claim 1 , wherein the high temperature material has a melting temperature substantially higher than that of the human tissue medical pouch.4. The device for avoiding cross contamination during processing of human tissue as recited in claim 1 , wherein the high temperature material is Kapton.5. The device for avoiding cross contamination during processing of human tissue as recited in claim 1 , wherein the rigid frame is formed of stainless steel.6. The device for avoiding cross contamination during processing of human tissue as recited in claim 1 , wherein the isolation pouch shape is a triangular prism.7. The device for avoiding cross contamination during processing of human tissue as recited in claim 7 , wherein the ...

Подробнее
Номер записи: 60
26-03-2020 дата публикации

ENGINEERING REVERSIBLE ELASTICITY IN DUCTILE OR BRITTLE THIN FILMS AND PRODUCTS RESULTING FROM SAID ENGINEERING

Номер: US20200094466A1
Автор: LACOUR Stephanie P., TRINGIDES Christina Myra, VACHICOURAS Nicolas
Принадлежит:

The present disclosure relates to how to engineer reversible elasticity in thin films and/or layers and/or substrates, using a repeated Y-shaped motif, which is cut out through the film and/or layer and/or substrate. As an example, using a 75 μm thick polyimide (PI) foil, macroscopic dog-bone shaped structures with a range of geometrical parameters of the Y shape have been prepared according to an embodiment of the present disclosure. The tensile strain response of the film at its point of fracture was then recorded. The structures were also confirmed using finite element modeling. Upon stretching, the PI ligaments locally deflect out of plane, allowing the foil to macroscopically stretch. 1. A method for engineering elasticity in a layer of intrinsically non-elastic material , said method comprising:providing the layer of intrinsically non-elastic material; andforming a plurality of through cuts in said layer, each through cut extending through a thickness of said layer;wherein each of said through cuts has a projection on at least one main surface of said layer and the projection is shaped so as to comprise at least three branches extending from a common portion.2. The method as claimed in claim 1 , wherein forming said plurality of through cuts includes forming at least one through cut having claim 1 , on said at least one main surface of said layer claim 1 , at least two equal length branches of the at least three branches of the at least one through cut.34.-. (canceled)5. The method as claimed in claim 1 , wherein forming said plurality of through cuts includes forming at least one through cut having claim 1 , on said at least one main surface of said layer claim 1 , at least two of the branches of the at least one through cut of equal width.67.-. (canceled)8. The method as claimed in claim 1 , wherein said layer extends along a length direction (X) and a width direction (Y) substantially perpendicular to said length direction (X) claim 1 , and wherein forming ...

Подробнее
Номер записи: 61
02-06-2022 дата публикации

Method for producing fiber-reinforced plastic combined body from prepreg

Номер: US20220168973A1
Автор: Mikio Hiramatsu, Tadashi JYUNISHO
Принадлежит: IHI Corp

A method for producing a fiber-reinforced plastic combined body from a prepreg, includes: heating the prepreg in an atmosphere above a room temperature and lower than a curing temperature of the prepreg; provisionally combining pre-products obtained by the heating together or with another component; and retaining and curing the combined pre-products at the curing temperature or higher.

Подробнее
Номер записи: 62
19-04-2018 дата публикации

STACKED FLEXIBLE SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20180104915A1
Автор: Liu Zhe
Принадлежит:

A stacked flexible substrate for use in a flexible display panel and method for manufacturing the same are provided. The method comprises the following steps of: coating a first organic layer on a substrate, and forming a plurality of first grooves on the first organic layer; disposing a first inorganic layer on the first organic layer; coating a second organic layer on the first inorganic layer, and forming a plurality of second grooves on the second organic layer; disposing a second inorganic layer on the second organic layer; coating a planarizing layer on the second inorganic layer; and peeling the substrate from the first organic layer. 1. A method for manufacturing a stacked flexible substrate , comprising the following steps of:coating a first organic layer on a substrate, and forming a plurality of first grooves on the first organic layer;disposing a first inorganic layer on the first organic layer, wherein a maximum thickness of the first inorganic layer is less than a minimum depth of the first groove;coating a second organic layer on the first inorganic layer, and forming a plurality of second grooves on the second organic layer;disposing a second inorganic layer on the second organic layer, wherein a maximum thickness of the second inorganic layer is less than a minimum depth of the second groove;coating a planarizing layer on the second inorganic layer; andpeeling the substrate from the first organic layer.2. The method for manufacturing the stacked flexible substrate according to claim 1 , wherein the depth of the first grooves is the same claim 1 , the thickness of the first inorganic layer is uniformity claim 1 , and the depth of the second grooves is the same claim 1 , the thickness of the second inorganic layer is uniformity.3. The method for manufacturing the stacked flexible substrate according to claim 2 , wherein the plurality of first grooves are respectively corresponding to the plurality of second grooves claim 2 , each of the first grooves ...

Подробнее
Номер записи: 63
19-04-2018 дата публикации

POLYIMIDE FILM HAVING LOW GLOSS AND MANUFACTURE THEREOF

Номер: US20180105657A1
Автор: Chung Wen-Hsuan
Принадлежит:

The present application provides a polyimide film having low gloss and a process of fabricating the same. The process includes forming a polyimide precursor solution by reacting diamine monomers with dianhydride monomers in a solvent, forming a wet polyimide film on a support with the polyimide precursor solution, pressing the wet film with an embossing roller at a temperature equal to or higher than 100° C. and an applied pressure equal to or higher than 1 kg, thereby causing the wet film to exhibit an uneven surface, and heating the wet film to form a polyimide film. 1. A process of fabricating a polyimide film , comprising:forming a polyimide precursor solution obtained by reacting diamine monomers with dianhydride monomers in a solvent;forming a wet film on a support with the polyimide precursor solution;pressing the wet film with an embossing roller at a temperature equal to or higher than 100° C., the embossing roller applying a pressure equal to or higher than 1 kg, thereby causing the wet film to exhibit an uneven surface; andheating the wet film to form a polyimide film.2. The process according to claim 1 , wherein the diamine monomers are selected from the group consisting of 4 claim 1 ,4′-oxydianiline (4 claim 1 ,4′-ODA) claim 1 , p-phenylene diamine (p-PDA) claim 1 , and 2 claim 1 ,2′-bis(trifluoromethyl) benzidine (TFMB) claim 1 , and the dianhydride monomer is selected from the group consisting of pyromellitic dianhydride (PMDA) claim 1 , 3 claim 1 ,3′ claim 1 ,4 claim 1 ,4′-biphenyltetracarboxylic dianhydride (BPDA) and 2 claim 1 ,2-bis[4-(3 claim 1 ,4-dicarboxyphenoxy) phenyl]propane dianhydride (BPADA).3. The process according to claim 1 , wherein the step of pressing the wet film with an embossing roller is conducted with a temperature of the embossing roller between 160° C. and 190° C. and an applied pressure between 4 kg and 8 kg.4. The process according to claim 1 , wherein the solvent is present in a quantity between 20 wt % and 50 wt % based ...

Подробнее
Номер записи: 64
11-04-2019 дата публикации

VACUUM FILM WITH VENTILATION

Номер: US20190106225A1
Автор: Karrasch Tobias, Kleinpeter Roman
Принадлежит:

Film for the repair of aircraft components made of fiber-reinforced thermoplastic including an embossed film made of polyimide and a coating made of an electrically conductive material. 1. A film for repair of aircraft components made of fiber-reinforced thermoplastic comprising an embossed film made of polyimide and a coating made of an electrically conductive material.2. The film according to claim 1 , wherein resistivity and layer thickness of the electrically conductive material allow use of electric current to heat the film.3. The film according to claim 1 , wherein the electrically conductive material is metal powder or graphite powder.4. The film according to claim 1 , wherein the embossed film consists essentially of Kapton.5. The film according to claim 1 , wherein a thickness of the film is from 50 to 100 micrometers.6. The film according to claim 1 , wherein a depth of the embossment of the film is from 0.01 to 0.5 mm.7. The film according to claim 1 , comprising a further layer made of a material with release properties.8. A process for producing a film for repair of aircraft components made of fiber-reinforced thermoplastic and comprising an embossed film made of polyimide and a coating made of an electrically conductive material claim 1 , the method comprising: printing the film with a coating comprising electrically conductive material; and', 'embossing the coated film with an embossing roll., 'providing film made of polyimide;'} This application claims priority to German patent application DE 10 2017 122 630.3 filed Sep. 28, 2017, the entire disclosure of which is incorporated by reference herein.The disclosure herein relates to an aid to the repair of components made of fiber-composite materials such as GRP (glass-fiber-reinforced plastic) or CRP (carbon-fiber-reinforced plastic), in particular in aircraft construction and in aircraft repair.Fiber-composite materials can comprise a reinforcement material (fibers) and a matrix. The matrix sheaths and ...

Подробнее
Номер записи: 65
09-06-2022 дата публикации

Tube Seal and Cut Device

Номер: US20220176640A1
Автор: Cameron Keller, Robert Alister Neil
Принадлежит: Invetech Inc

A tube seal apparatus including a sealing iron having a tube sealing end, an insulating shroud having a tube clamping end, wherein the sealing iron is at least partially disposed within the insulating shroud. The apparatus further includes an anvil having a cutting detail and a non-stick membrane disposed between the anvil and the tube clamping end of the insulating shroud. The sealing iron and insulating shroud are configured to advance towards a tube to be sealed positioned between the non-stick membrane and the anvil. The tube clamping end is configured to clamp the tube through the non-stick membrane. The sealing iron is configured to advance towards the tube to melt and seal the tube against the cutting detail through the non-stick membrane.

Подробнее
Номер записи: 66
30-04-2015 дата публикации

POLYIMIDE FILM AND PROCESS FOR PRODUCING THE SAME

Номер: US20150119534A1
Автор: Akahori Kiyokazu, Itoh Toshihisa, Kaneshiro Hisayasu
Принадлежит: KANEKA CORPORATION

A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component. The remaining amic acid is imidized and the film is dried. 1. A process for producing a polyimide film , comprising the steps ofcasting and/or coating and subsequently drying an organic solvent solution of polyamic acid on a support, so as to produce a gel film, which is a partially cured and/or partially dried polyamic acid film; andimidizing the gel film to obtain the polyimide film,said process producing the gel film by carrying out the step of imidizing the gel film to obtain the polyimide film by tenter heating in which a heat treatment is carried out on the gel film with fastened both ends, wherein a content of remaining volatile component of the gel film and an initial temperature of heating in the tenter heating are controlled to control modulus and coefficient of thermal expansion.2. The process as set forth in claim 1 , wherein claim 1 , in said process of the gel film claim 1 , the content of remaining volatile component of the gel film is set within 50 wt % to 300 wt % claim 1 , and an initial ...

Подробнее
Номер записи: 67
18-04-2019 дата публикации

Cured Composition Having High Impact Strength and Temperature Resistance, Based on an Epoxy Resin and a Polyisocyanate

Номер: US20190112437A1
Автор: Bachon Thomas, Holtgrewe Christian, Kuester Harald, Sanchis Otero Guadalupe
Принадлежит:

The invention relates to a method for producing a cured composition which has at least one oxazolidinone ring and at least one isocyanurate ring and is cross-linked by the same, starting from a liquid reactive mixture which, based on the total weight thereof, contains at least one epoxy resin, at least one polyisocyanate, at least one polyol, and at least one catalyst composition. The invention further relates to the cured composition obtainable thereby. 2. The method according to claim 1 , wherein the at least one epoxy resin is a glycidyl ether.3. The method according to claim 1 , wherein the at least one epoxy resin is a bisphenol diglycidyl ether.4. The method according to claim 1 , wherein the at least one polyisocyanate is a methylene diphenyl diisocyanate (MDI).5. The method according to claim 1 , wherein the at least one polyol is selected from the group consisting of polyether polyol claim 1 , polyester polyol and mixtures thereof.6. The method according to claim 1 , wherein the at least one polyol is selected from the group consisting of polyethylene glycol claim 1 , polypropylene glycol claim 1 , polytetramethylene glycol claim 1 , polyhexamethylene glycol and mixtures thereof.7. The method according to claim 1 , wherein the catalyst composition contains at least one base which comprises at least one tertiary nitrogen atom and/or an imine nitrogen atom.8. The method according to claim 1 , wherein the catalyst composition does not contain a base that is based on an imidazolium cation.9. The method according to claim 7 , wherein the nitrogen-containing base is a base selected from the group consisting of 1-methylimidazole claim 7 , 2 claim 7 ,4-ethylmethylimidazole (EMI) claim 7 , 4-dimethylaminopyridine claim 7 , 1 claim 7 ,4-diazabicyclo[2.2.2]octane (DABCO) claim 7 , 1 claim 7 ,8-diazabicyclo[5.4.0]undec-7-ene (DBU) claim 7 , 1 claim 7 ,5-diazabicyclo[3.4.0]non-5-ene (DBN) and mixtures thereof.10. The method according to claim 1 , wherein:(a) the ...

Подробнее
Номер записи: 68
07-05-2015 дата публикации

Tribological aromatic polyimide compositions

Номер: US20150126663A1
Автор: Burkhart Thomas, Feldner Hans-Peter, Stern Brian A., Underwood Geoffrey Scott, WALTER Rolf, Wu Yuhong
Принадлежит: SOLVAY SPECIALTY POLYMERS USA, LLC.

A resin composition [composition (C)] comprising: from 40 to 95% by volume (% v) of at least one aromatic polyimide [polymer (PI)], from 0.1 to 15% by volume (% v) of at least one compound having the general formula AX[compound (AX)], wherein each A is independently selected from a group consisting of a metal atom (M) which is selected from the group consisting of Fe, Co, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Pt, Au, Hg, Pb and Tl and a semimetal atom (SM) which is selected from the group consisting of As, Sb and Bi; wherein each X is independently selected from a group consisting of As, Sb, S, Se and Te; with the proviso that when A is As or Sb then X is different from A; and wherein n and m equal or different from each other, are independently 1, 2, 3 and 4, from 0.1 to 30% by volume (% v) of at least one carbon fiber, from 0 to 15% by volume (% v) of at least one filler selected from the group consisting of TiO, ZrOSiOor mixtures thereof, and wherein all % are based on the total volume of the composition (C). 2. The resin composition of claim 1 , wherein the composition comprisesfrom 0.1 to 15% by volume (% v) of the at least one compound having the formula WS.5. The composition according to claim 1 , wherein AXis a metal sulfide wherein X is S and A is a metal atom selected from the group consisting of Fe claim 1 , Co claim 1 , Ni claim 1 , Cu claim 1 , Zn claim 1 , Ag claim 1 , Cd claim 1 , Pt claim 1 , Au claim 1 , Hg claim 1 , Pb and Tl.6. The composition according to claim 1 , wherein AXis a semimetal sulfide wherein X is S and A is a semimetal atom which is selected from the group consisting of As claim 1 , Sb and Bi.7. The composition according to claim 1 , wherein the carbon fiber is selected from the group composed of PAN-based carbon fibers (PAN-CF) claim 1 , pitch based carbon fibers claim 1 , graphitized pitch-based carbon fibers claim 1 , and mixtures thereof.8. The composition according to claim 7 , wherein the carbon fiber is a PAN-based carbon fiber having ...

Подробнее
Номер записи: 69
04-05-2017 дата публикации

CROWN ADJUSTING ROLL

Номер: US20170120483A1
Автор: SHINOBUDANI Koji
Принадлежит: THE JAPAN STEEL WORKS, LTD.

A bearing is provided which supports an inner pipe flange part. An end face flange is formed so as to be inclined on a center of an inner flange part as a supporting point and a load is applied by a pushing and pulling device through the bearing in a direction intersecting at right angles to an axial direction of a roll to incline the end face flanges at both sides by prescribed angles. Thus, a rotation moment is applied to an end face of the outer cell to adjust a crown of the outer cell. 1. A crown adjusting roll comprising:a cylindrical outer cell configured to pressurize a sheet, a roll shaft;', 'a first bearing configured to support the roll shaft;', an outer flange part configured to fix the outer cell;', 'an inner flange part provided inside of the roll in a direction of width of the roll and fixed to the roll shaft; and', 'an inner pipe flange pipe that connects the outer flange part to the inner flange part; and, 'an end face flange configured to support the outer cell on one of end faces of the roll at both sides of the outer cell, the end face flange comprising, 'a second bearing configured to support the inner pipe flange part, and, 'wherein each of end portions of the roll compriseswherein the second bearing is configured to incline the end face flange on a center of the inner flange part as a supporting point, and the end face flange is inclined by a prescribed angle by applying a load in a direction intersecting at a right angle to an axial direction of the roll through the bearing by a pushing and pulling device such that a rotation moment is applied to an end face of the outer cell to adjust a crown.2. The crown adjusting roll according to claim 1 , further comprising:a cylindrical inner cell provided in the outer cell and having an outside diameter that is smaller than an inside diameter of the outer cell,wherein the inner cell is integrally formed with the inner flange part.3. The crown adjusting roll according to claim 1 ,wherein the inner piper ...

Подробнее
Номер записи: 70
04-05-2017 дата публикации

Polarizer, Manufacturing Method Thereof and Display Device

Номер: US20170123126A1
Автор: FENG Hongbo, YANG Jiuxia
Принадлежит:

A polarizer, a manufacturing method thereof and a display device are provided. The method includes forming an alignment layer on a carrier substrate and forming grooves on the alignment layer; providing liquid metal in the grooves, in which the liquid metal includes a plurality of liquid metal structures; applying an electric field parallel to the lengthwise direction x of the groove to the liquid metal to allow each liquid metal structure to be stretched along the lengthwise direction x of the groove to form a rod-like structure and the major-axis direction of each liquid metal structure is parallel to the lengthwise direction x of the groove; obtaining the liquid metal by curing the liquid metal; and stripping off the polarizer from the carrier substrate. 1. A method of manufacturing a polarizer , comprising steps of:forming an alignment layer on a carrier substrate and forming grooves on the alignment layer;providing liquid metal in the grooves, in which the liquid metal includes a plurality of liquid metal structures;applying an electric field parallel to the lengthwise direction of the grooves to the liquid metal, to allow each liquid metal structure to be stretched along the lengthwise direction of the grooves to form a rod-like structure and the major-axis direction of the liquid metal structures is parallel to the lengthwise direction of the grooves;obtaining the polarizer by curing the liquid metal; andstripping off the polarizer from the carrier substrate.2. The method according to claim 1 , further comprising:before the step of providing the liquid metal in the grooves,forming a covering layer on a surface of the alignment layer provided with the grooves, to allow channels provided with openings at both ends being formed between the alignment layer and the covering layer; andthe step of providing the liquid metal in the grooves includes filling the liquid metal into the channels.3. The method according to claim 2 , wherein the step of filling the liquid ...

Подробнее
Номер записи: 71
05-05-2016 дата публикации

Flexible and transparent electrode and manufacturing method thereof

Номер: US20160128187A1
Автор: Chin-Yen Chou, Guey-Sheng Liou, Heng-Yi LU, Jiang-Jen Lin
Принадлежит: National Taiwan University NTU

The present invention relates to a flexible and transparent electrode and manufacturing method thereof. The flexible transparent electrode comprises an insoluble polyimide film as a substrate and metal nanowires as a conductor, wherein the insoluble polyimide film is polymerized by aromatic diamines and alicyclic diamines of thermal imidization. In addition, the coating method of polyimides of the present invention not only improves the adhesion and dispersion between metal nanowires and substrate, but also exhibits good thermal stability; moreover, the transparent electrode keeps the effectiveness even in high temperature processing conditions such as annealing, laser, plasma or other severe operation environment. Using the step transfer printing method can produces the transparent electrode product with smooth surfaces, thermo stability, and organic solvent resistance, so as to improve the adhesion of metal nanowires and lower the resistance of the transparent electrode.

Подробнее
Номер записи: 72
14-05-2015 дата публикации

Injection Molded Composite Fan Platform

Номер: US20150132134A1
Автор: Murdock James R.
Принадлежит:

A fan platform for a gas turbine engine may include an outer flow path surface extending between a first side and a second side. An inner surface extends between the first side and the second side, and faces radially oppositely the outer flow path surface. A plurality of platform hooks may extend radially inwardly from the inner surface. 1. A fan platform for a gas turbine engine , the fan platform comprising:an outer flow path surface extending between a first side and a second side;an inner surface extending between the first side and the second side, the inner surface facing radially oppositely the outer flow path surface; anda plurality of platform hooks extending radially inwardly from the inner surface.2. The fan platform of claim 1 , wherein the fan platform is an injection molded composite fan platform.3. The fan platform of claim 1 , further including a plurality of gussets extending radially inwardly from the inner surface claim 1 , each gusset of the plurality of gussets centrally located between the first side and the second side.4. The fan platform of claim 3 , wherein the plurality of platform hooks includes a first and second upstream-facing platform hook and a downstream-facing platform hook.5. The fan platform of claim 4 , wherein the plurality of gussets includes first through third gussets claim 4 , the first gusset disposed between the first and second upstream-facing platform hooks claim 4 , the second gusset disposed between the second upstream-facing platform hook and the downstream-facing platform hook claim 4 , the third gusset disposed between the downstream-facing platform hook and a downstream end of the fan platform.6. The fan platform of claim 1 , wherein the first side is contoured to complementarily match a contour of a suction surface side of an airfoil and the second side is contoured to complementarily match a contour of a pressure surface side of the airfoil.7. A gas turbine engine claim 1 , the engine comprising:a rotor disk;a ...

Подробнее
Номер записи: 73
17-05-2018 дата публикации

POLYIMIDE RESIN AND FILM USING SAME

Номер: US20180134848A1
Автор: JU Chul Ha, JUNG Hak Gee, Park Hyo Jun
Принадлежит: KOLON INDUSTRIES, INC.

This invention relates to a polyimide resin and a film using the same, wherein the polyimide resin is an imidized product of polyamic acid in which a polymerization composition including a diamine-based monomer and a dianhydride-based monomer is copolymerized, at least one of the diamine-based monomer and the dianhydride-based monomer including a monomer containing at least one selected from among an oxy group, a sulfone group and a fluoro group, the diamine-based monomer including at least one selected from among 1,3-bis(4-aminophenoxy)benzene and 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane, and thus the polyimide resin has improved heat resistance and mechanical properties while being colorless and transparent and can thus be efficiently applied to a variety of fields, including semiconductor insulation layers, TFT-LCD insulation layers, passivation layers, liquid crystal alignment layers, optical communication materials, protective layers for solar cells, and flexible display substrates. 1. A polyimide resin , which is an imidized product of polyamic acid in which a polymerization composition comprising a diamine-based monomer and a dianhydride-based monomer is copolymerized , at least one of the diamine-based monomer and the dianhydride-based monomer including a monomer containing at least one selected from among an oxy group , a sulfone group and a fluoro group , the diamine-based monomer including at least one selected from among 1 ,3-bis(4-aminophenoxy)benzene and 2 ,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane.2. The polyimide resin of claim 1 , wherein the diamine-based monomer includes at least one monomer containing at least one selected from among an oxy group claim 1 , a sulfone group and a fluoro group claim 1 , and the dianhydride-based monomer includes at least one monomer containing at least one selected from among an oxy group claim 1 , a sulfone group and a fluoro group.3. The polyimide resin of claim 1 , wherein the at least one ...

Подробнее
Номер записи: 74
18-05-2017 дата публикации

CONTAINED FOAM ENVELOPE FOR INSULATING AND SEALING LARGE VOLUMES

Номер: US20170136664A1
Автор: "OLeary Robert J.", Alter Harry, VanHouten Desmond J.
Принадлежит:

A system for sealing large volumes or gaps includes a flexible envelope that can assume the shape of the volume when filled with a foaming composition that expands the envelope to the boundaries of the volume. The foaming composition may be integral with the envelope or delivered in bulk by an external device. The foaming composition may be one or multiple parts, typically two parts such as a poly isocyanate and a polyols, in which case it is necessary to keep the two parts separate until foaming is desired. Separation may be accomplished by providing multiple compartments that deliver components via a mixing device into the interior. The envelope may include ribs for structural strength and shaping, and leak pores around its perimeter to enhance bonding and sealing. It may also include perforations for bulk, modular seals or for separation of portions of the envelope to seal irregular shapes. 18-. (canceled)9. A method for sealing or insulating a large volume , the method comprising: an envelope having walls defining an interior and at least one separate compartment in fluid communication with the interior, the compartment housing at least one component of a foaming composition; and', 'an activation trigger configured, upon activation, to mix the components of the foaming composition and deliver them to the interior of the envelope to initiate a foaming reaction within the envelope and, 'placing within the large volume against at least one substrate; a self contained system for sealing or insulating a large volume, the system comprisingactivating the trigger to initiate the foaming reaction.10. The method of wherein a retrofit envelope is inserted into an enclosed volume space through a smaller orifice in one of the substrate surfaces.11. The method of wherein the envelope is first rolled up for insertion through a smaller orifice and as the foaming composition expands claim 10 , the envelope unrolls to fill the volume.12. The method of wherein the step of ...

Подробнее
Номер записи: 75
28-05-2015 дата публикации

Halogen-Free Benzoxazine Based Curable Compositions for High Tg Applications

Номер: US20150147508A1
Автор: Roger Tietze, Yen-Loan Nguyen
Принадлежит: Huntsman Advanced Materials Americas LLC

A method for forming a halogen-free curable composition containing a benzoxazine monomer, at least one epoxy resin, a catalyst, a toughening agent and a solvent. The halogen-free curable composition is especially suited for use in automobile and aerospace applications since the composition, upon curing, produces a composite having a high glass transition temperature.

Подробнее
Номер записи: 76
26-05-2016 дата публикации

METHOD FOR PRODUCING POLYIMIDE MEMBRANES

Номер: US20160144323A1
Автор: Balster Jörg, Führer Christoph, Ungerank Markus, Visser Tymen
Принадлежит: Evonik Fibres Gmbh

The invention concerns polyimide membranes, preferably composed of P84 type 70 or P84 HT, having improved chemical and physical properties, a method of producing same and also their use. 2. A method according to , wherein the anneal is conducted for 15 to 300 min , preferably for 30 to 240 min , more preferably for 60 to 120 min and still more preferably for 60 to 90 min from the time at which the target temperature for the anneal is attained , and/or in that the membranes are heated to the annealing temperature at a heating rate of 0.1 to 10° C./min , preferably 1 to 5° C./min and more preferably 1 to 2° C./min , and/or in that after the temperature of the atmosphere surrounding the membrane at a distance of up to 10 cm , preferably 2 to 10 cm , has permanently dropped to below the maximum annealing temperature down to a temperature of 200 to 275° C. , more preferably 200 to 270° C. , still more preferably 200 to 250° C. and yet still more preferably 200 to 220° C. the atmosphere corresponds to the atmosphere defined in and/or the gas stream defined in , or in that after the temperature has permanently dropped to below the maximum annealing temperature a vacuum is applied , and/or in that the oxygen content of the atmosphere surrounding the membrane at a distance of up to 10 cm , preferably 2 to 10 cm , is not more than 0.25% by volume and more preferably not more than 0.1% by volume and/or in that the membranes before annealing have an oxygen permeance of not less than 25 GPU , preferably not less than 50 GPU , more preferably in the range from 100 to 2000 GPU , still more preferably from 200 to 1500 GPU , yet still more preferably from 300 to 1000 GPU and yet still even more preferably from 400 to 800 GPU.3. A method according to wherein step a) comprises the sub-steps ofa1) producing a solution of a polyimide polymer in an aprotic dipolar solvent by polymerizing corresponding monomers, anda2) producing a casting solution comprising the polyimide polymer, anda3) ...

Подробнее
Номер записи: 77
26-05-2016 дата публикации

Meltblown method for producing nonwoven fabrics with hygroscopic metastatic feature

Номер: US20160144547A1
Автор: CHOU Wen-Tung, Huang Kun-Shan, Lai Ming-Yi, TSAI Hsiao-Chi
Принадлежит:

A meltblown method for producing nonwoven fabrics with hygroscopic metastatic feature. Firstly, fuse prepared bio-polyamide 6,10 into a melt, then extrude, and blow the melt out spinnerets to form natural bio-polyamide 6,10 filaments laid onto a conveyer to form a substrate fibrous web. Secondly, blend and dissolve prepared pulp by putting N-methylmorpholine N-oxide (NMMO) dissolving solvent, and dehydrate it to form dope, then extrude and blow the dope out spinnerets to form natural cellulose filaments laid up over existing fibrous web of bio-polyamide 6,10 on the conveyer so that a fibrous composite of the bio-polyamide 6,10 and natural cellulose in overlaid lamination is formed thereon. Finally, coagulate and regenerate the fibrous composite of the bio-polyamide 6,10 and natural cellulose by means of ejecting mist aerosol of water, and convert it into nonwoven fabric with hygroscopic metastatic feature by orderly applying post treatments of hydro-entangled needle punching, drying, winding-up processes. 1. A meltblown method for producing nonwoven fabrics with hygroscopic metastatic feature comprises following steps:a. Prepare macromolecule polymer of bio-polyamide 6,10 as raw material;b. Fuse the bio-polyamide 6,10 into a melt of molten substance under high temperature in range of 250-280 degree centigrade (250-280° C.);c. Via meltblown method, the melt is forcedly blown out spinnerets to form natural bio-polyamide 6,10 filaments;d. Blow the molten natural bio-polyamide 6,10 filaments onto a conveyer, and lay these natural bio-polyamide 6,10 filaments on the conveyer to form a substrate fibrous web with thickness in range of 0.3-2.5 mm;e. Prepare pulp as raw material with content cellulose over 65% and degree of polymerization (DP) in range of 500-1500;f. By putting N-methylmorpholine N-oxide (NMMO) as dissolving solvent into prepared pulp for high speed blending and dissolving under low temperature in range from 60 to 90 degrees centigrade (60° C.-90° C.), then ...

Подробнее
Номер записи: 78
26-05-2016 дата публикации

METHOD FOR MANUFACTURING A COMPOSITE PART FROM A PREIMPREGNATED MATERIAL WITH A SEMI-CRYSTALLINE MATRIX HAVING AN AMORPHOUS SURFACE LAYER

Номер: US20160144577A1
Автор: IANNONE Michele
Принадлежит:

A method for manufacturing a composite part includes preparing a stack of plies made of a starting material, applying a vacuum bag to the stack of plies, and subjecting the stack of plies to a temperature and pressure cycle in an autoclave. The starting material is a laminate material of resin matrix reinforced with a fiber material. The matrix has a core layer of semi-crystalline thermoplastic resin and a pair of outer layers of amorphous thermoplastic resin arranged on opposite sides of the core layer. The glass transition temperature of the amorphous thermoplastic resin is below the melting point of the semi-crystalline thermoplastic resin. The autoclave temperature cycle heating rapidly the stack of plies to a working temperature above the transition temperature, but below the melting point, keeping the stack of plies at the working temperature during a time period for compaction alone; and cooling the stack of plies. 1. A method for manufacturing a composite part , comprising the following steps:preparing a stack of plies, said stack comprising a plurality of plies, each of the plurality of plies being made of a starting material;applying a vacuum bag to the stack of plies, and applying vacuum within the vacuum bag; andsubjecting the stack of plies to a temperature and pressure cycle in an autoclave;wherein said starting material is a laminate material comprising a resin matrix reinforced with a fiber material, wherein the matrix comprises a core layer of semi-crystalline thermoplastic resin having a melting point, and a pair of outer layers arranged on opposite sides of the core layer, each outer layer consisting of amorphous thermoplastic resin having a glass transition temperature, wherein the glass transition temperature of the amorphous thermoplastic resin is below the melting point of the semi-crystalline thermoplastic resin;wherein adjacent plies of the plurality of plies make contact with each other by the respective outer layers of amorphous ...

Подробнее
Номер записи: 79
30-04-2020 дата публикации

Film, method for evaluating optical homogeneity of film, and film production method

Номер: US20200131322A1
Автор: Akiko Kishida, Junichi Ikeuchi, Masami Makidera, Masayoshi Karasawa, Mitsunori Nodono
Принадлежит: Sumitomo Chemical Co Ltd

A film having excellent optical homogeneity, which is suitably used as an optical film in an image display device, and a method for manufacturing the same. Moreover, an evaluation method which can evaluate the optical homogeneity of the film with a higher precision than in conventional evaluation methods is provided. A film that is a cast film containing a resin having a weight average molecular weight of 200,000 or more, wherein, when line profiles in a direction h and a direction v which are orthogonal to each other in a film inverse space image obtained by Fourier transforming a projection image obtained by a projection method using the cast film are a line profile h and a line profile v.

Подробнее
Номер записи: 80
04-06-2015 дата публикации

POLYETHERIMIDES WITH IMPROVED MELT STABILITY

Номер: US20150152224A1
Автор: CHELLAMUTHU Manojkumar, Royer Aaron, Zhou Hao
Принадлежит:

A polyetherimide composition comprises the polymerization product of a catalyzed imidization product of a 3-substituted phthalic anhydride and a sulfone diamine having improved melt stability and reduced corrosivity, and a method of manufacture thereof. 2. The method of claim 1 , wherein the polyetherimide is exposed to a temperature of 770° F. (410° C.).3. The method of claim 1 , wherein the polyetherimide exhibits a reduction of viscosity ranging from 35%.4. The method of claim 1 , wherein the 3-substituted phthalic anhydride and the sulfone diamine converts to the bis(phthalimide) in a conversion of at least 99.5%.5. The method of claim 1 , wherein the polyetherimide has a glass transition temperature claim 1 , Tg claim 1 , that is at least 260° C.6. The method of claim 1 , wherein the polyetherimide retains a melt stability that is at least 95% when the polyetherimide resin is exposed to a temperature of 775° F. (410° C.) for 9 minutes.7. The method of claim 1 , wherein the catalyst is present in an amount ranging from 0.05 to 1 mole % based on the moles of the sulfone diamine during the imidization claim 1 , and a second catalyst is added before the polymerization claim 1 , wherein the second catalyst is selected from quaternary ammonium salts claim 1 , guanidinium salts claim 1 , pyridinium salts claim 1 , imidazolium salts claim 1 , and combinations thereof claim 1 , and wherein the second catalyst is the same or different from the catalyst for the imidization.8. The method of claim 1 , wherein the catalyst is hexaethylguanidinium chloride.9. The method of claim 1 , wherein the 3 claim 1 ,3′-bis(phthalimide) composition and the polyetherimide composition are manufactured in the same vessel.11. The method of claim 5 , wherein X is chloro claim 5 , andZ is 2,2-(4-phenylene) isopropylidene.15. The method of claim 1 , wherein the catalysts are a guanidinium salt claim 1 , and the polyetherimide composition comprises less than 1000 ppm of the residue of the ...

Подробнее
Номер записи: 81
02-06-2016 дата публикации

COMPOSITE LAYER MATERIAL, METHOD FOR MANUFACTURING MEMBRANE, AND METHOD FOR MANUFACTURING LAYERED BODY

Номер: US20160152008A1
Автор: Fujikawa Shigenori, Fujimura Satoshi, NOGUCHI Takuya, Ogata Toshiyuki
Принадлежит:

A composite layer material including at least two laminated layers. One of outermost layers is a support film that is removable from another layer and has a self-supporting property. 1. A composite layer material comprising at least two layers which are laminated ,wherein one of the outermost layers of the at least two layers is a support film that (i) is removable from another layer of the at least two layers; and (ii) has a self-supporting property.2. The composite layer material as set forth in claim 1 , wherein a thickness of the support film is 1 μm or more and 100 μm or less.3. The composite layer material as set forth in claim 1 , wherein the support film is made of a material that is to be dissolved in a liquid.4. The composite layer material as set forth in claim 3 , wherein the liquid is water or an aqueous solution.5. The composite layer material as set forth in claim 3 , wherein the liquid is an organic solvent.6. The composite layer material as set forth in claim 1 , wherein the another layer has a thickness of 10 nm or more and 1 μm or less.7. The composite layer material as set forth in claim 1 , wherein said composite layer material is made up of three or more layers which are laminated.8. The composite layer material as set forth in claim 1 , wherein:at least one layer other than the one of outermost layers is a layer having a separating function to separate a certain substance from a mixture containing the certain substance.9. The composite layer material as set forth in claim 1 , wherein:at least one layer other than the one of outermost layers is made of a material which contains at least one selected from the group consisting of (i) an organic compound having an epoxy group and (ii) an organic compound having an amino group.10. The composite layer material as set forth in claim 9 , wherein:at least one layer other than the one of outermost layers is made of a material containing PCGF ((o-cresyl glycidyl ether)-formaldehyde copolymer) and PEI ( ...

Подробнее
Номер записи: 82
31-05-2018 дата публикации

MATERIAL EXTRUSION ADDITIVE MANUFACTURING OF POLYIMIDE PRECURSOR

Номер: US20180147773A1
Автор: Hocker Thomas, KALYANARAMAN Viswanathan, PRICE Brian, Teutsch Erich Otto
Принадлежит:

A system comprises an extrusion head to selectively extrude a bead of a precursor solution onto a target road on a substrate within a build area, the precursor solution comprising a polyimide precursor compound in a solvent, an actuator coupled to the extrusion head to move the extrusion head, a control system coupled to the actuator to control the extrusion head along the target road and selectively dispense the precursor solution to the extrusion head, and an environmental system configured to accommodate the target road during fabrication, the environmental system configured to expose the dispensed precursor solution to a temperature selected to evaporate solvent from the solution to initiate polymerization of the polyimide precursor compound to form at least a portion of a polyimide part. 1. A system for fabricating an article , the system comprising:an extrusion head configured to selectively extrude a bead of a precursor solution onto a target road on a substrate within a build area, the precursor solution comprising a polyimide precursor compound in a solvent;an extrusion head actuator coupled to the extrusion head to move the extrusion head;a control system coupled to the extrusion head actuator to control the extrusion head actuator to control the extrusion head along the target road and selectively dispense the precursor solution to the extrusion head; andan environmental system configured to accommodate the target road during fabrication of the article, the environmental system configured to expose the dispensed precursor solution to a temperature selected to evaporate solvent from the solution to initiate polymerization of the polyimide precursor compound to form at least a portion of a polyimide part.2. The system according to claim 1 , wherein the polyimide precursor compound comprise at least one of a bisanhydride precursor compound claim 1 , a diamine precursor compound claim 1 , and a reaction product of a bisanhydride precursor compound and a ...

Подробнее
Номер записи: 83
07-05-2020 дата публикации

Low-color polymers for flexible substrates in electronic devices

Номер: US20200140615A1
Автор: Brian C. Auman, John Donald Summers
Принадлежит: DuPont Electronics Inc

A solution comprising a polyamic acid in a high-boiling, aprotic solvent wherein the polyamic acid comprises three or more tetracarboxylic acid components and one or more diamine components such that a polyimide film can be made from the solution, and the film exhibits properties appropriate for use in electronics applications. Methods for preparing the film are disclosed.

Подробнее
Номер записи: 84
07-05-2020 дата публикации

HIGH FLOW, LOW GLOSS THERMOPLASTIC COMPOSITIONS, METHOD FOR THE MANUFACTURE THEREOF, AND ARTICLES COMPRISING THE COMPOSITION

Номер: US20200140686A1
Автор: DAI Mian, FANG Jianfei, Shen Liang
Принадлежит:

A thermoplastic composition includes a polyetherimide having a glass transition temperature of greater than 180° C., a block poly(ester-carbonate), and a flow promoter. The respective amounts of each component are further described herein. A method of preparing the thermoplastic composition includes melt-mixing the components, and extruding the components. Articles comprising the thermoplastic composition are also described. 1. A thermoplastic composition comprising:10 to 90 weight percent of a polyetherimide having a glass transition temperature of greater than 180° C., preferably greater than 200° C.;10 to 50 weight percent of a block poly(ester-carbonate);1 to 25 weight percent of a flow promoter; and0.1 to 15 weight percent of a gloss-reducing additive;wherein weight percent of each component is based on the total weight of the composition.4. The thermoplastic composition of claim 2 , wherein R is para-phenylene claim 2 , meta-phenylene claim 2 , or a combination thereof and Z is 4 claim 2 ,4′-diphenylene isopropylidene.6. The thermoplastic composition of claim 5 , wherein the poly(carbonate-ester) is a poly(bisphenol A carbonate)-co-(resorcinol isophthalate/terephthalate ester).7. The thermoplastic composition of claim 1 , wherein the flow promoter comprises a poly((Calkyl)ene terephthalate) claim 1 , a polyphthalamide claim 1 , a liquid crystalline polymer claim 1 , or a combination comprising at least one of the foregoing.8. The thermoplastic composition of claim 1 , wherein the gloss-reducing additive comprises a filler claim 1 , a gloss eliminating compound claim 1 , a compatibilizer claim 1 , or a combination comprising at least one of the foregoing.9. The thermoplastic composition of claim 8 , wherein the filler comprises talc claim 8 , a clay claim 8 , glass claim 8 , or a combination comprising at least one of the foregoing.10. The thermoplastic composition of claim 8 , wherein the gloss-eliminating compound comprises a silsesquioxane having the formula ...

Подробнее
Номер записи: 85
17-06-2021 дата публикации

DIP MOLDING COMPOSITION, METHOD OF PRODUCING GLOVE, AND GLOVE

Номер: US20210179820A1
Автор: Enomoto Norihide, OGAWA Taichi
Принадлежит:

Provided is, a glove production method including: (1) the step of immersing a glove forming mold in a liquid coagulant containing calcium ions so as to allow the coagulant to adhere to the glove forming mold; (2) the dispersion step of leaving a dip molding composition to stand with stirring; (3) the dipping step; (4) the gelling step; (5) the leaching step; (6) the beading step; (7) the precuring step; and (8) the curing step, in which method the steps (3) to (8) are performed in the order mentioned, and the dip molding composition has a specific formulation. 1. A dip molding composition comprising , at least:an elastomer that contains a (meth)acrylonitrile-derived structural unit, an unsaturated carboxylic acid-derived structural unit, and a butadiene-derived structural unit in a polymer main chain;a polycarbodiimide;an alkali metal hydroxide; andwater,whereinthe elastomer contains the (meth)acrylonitrile-derived structural unit in an amount of 20% by weight to 40% by weight, the unsaturated carboxylic acid-derived structural unit in an amount of 1% by weight to 10% by weight, and the butadiene-derived structural unit in an amount of 50% by weight to 75% by weight,the polycarbodiimide comprises at least one polycarbodiimide containing a hydrophilic segment in its molecular structure, and is added in an amount of larger than 0.2% by weight but 4.0% by weight or less with respect to a total solid content of the dip molding composition, andthe dip molding composition has a pH of 9.5 to 10.5.2. The dip molding composition according to claim 1 , comprising zinc oxide and/or an aluminum complex as a metal crosslinking agent in an amount of 0.2% by weight to 7.0% by weight with respect to the total solid content of the dip molding composition.3. The dip molding composition according to claim 1 , wherein the alkali metal hydroxide is potassium hydroxide.4. The dip molding composition according to claim 1 , whereinthe number of carbodiimide functional groups is 5 or more ...

Подробнее
Номер записи: 86
09-06-2016 дата публикации

POLY(METH)ACRYLIMIDE FILM, EASY-ADHESION FILM USING SAME, AND METHOD FOR MANUFACTURING SUCH FILMS

Номер: US20160159995A1
Автор: NAKASHIMA Kohei, SUGIMOTO Hidemasa, YAMADA Kazutaka, ZENNYOJI Yoshihiro
Принадлежит: RIKEN TECHNOS CORPORATION

Embodiments of the invention relate to a poly(meth)acrylimide film and a method for manufacturing such a film. At least one embodiment provides a poly(meth)acrylimide film that has (i) a total light transmittance of over 90% and (ii) haze of 2.0% or less. This film preferably has retardation of less than 50 nm. The method for manufacturing this film includes the following steps: (A) using a device provided with an extruder and a T die, a poly(meth)acrylimide molten film is continuously extruded from the T die; and (B) the poly(meth)acrylimide molten film is loaded by being fed between a rotating or circulating first mirrored-surface body and a rotating or circulating second mirrored-surface body, and then the film is pressed. During these steps, (C) the surface temperature of the first mirrored-surface body is in the range 100-200° C., and (D) the surface temperature of the second mirrored-surface body is in the range 20-200° C. 1. A poly(meth)acrylimide film , wherein the poly(meth)acrylimide film meets the following properties (i) and (ii):(i) a total light transmittance of higher than 90%; and(ii) a haze of 2.0% or lower.2. The poly(meth)acrylimide film according to claim 1 , wherein the poly(meth)acrylimide film further meets the following property (iii):(iii) a retardation of lower than 50 nm.3. The poly(meth)acrylimide film according to or claim 1 , wherein at least one surface of the poly(meth)acrylimide film has a wetting index of 50 mN/m or higher.4. An easily-adhesive film claim 1 , wherein the easily-adhesive film comprises an anchor coat formed on at least one surface of the poly(meth)acrylimide film according to .5. The easily-adhesive film according to claim 4 , wherein the anchor coat comprises a silane coupling agent having an amino group.6. The easily-adhesive film according to claim 4 , wherein the anchor coat is a thermoplastic urethane anchor coat.7. A hard coat-laminated film claim 4 , wherein the hard coat-laminated film comprises a hard coat ...

Подробнее
Номер записи: 87
22-09-2022 дата публикации

3D CAPILLARY SELF-ASSEMBLY OF LONG ASPECT RATIO PARTICLES

Номер: US20220297350A1
Автор: ALVAREZ Nicolas Javier, BAXTER Joy Rene, PALMESE Giuseppe Rafaello
Принадлежит: DREXEL UNIVERSITY

The present invention relates to a method for assembling particles having a long axis, a short axis and an average aspect ratio of 10-10,000. The method includes agitating a combination of a first solution, a second solution and the particles in any order to form a mixture wherein one of the first solution and the second solution is in the form of droplets dispersed in the other of the first solution and the second solution and the long axis of the particles is longer than a diameter of the droplets in the mixture, and continuing the agitation until the particles assemble into aggregates of particles with at least 30% of the particles aligned in parallel along the long axis. Aggregate or aggregate composites form by the method are also described. 1. A method for assembling particles having a long axis , a short axis and an average aspect ratio of 10-10 ,000 , whereby said method comprises steps of:agitating a combination of a first solution, a second solution and the particles in any order to form a mixture wherein one of the first solution and the second solution is in the form of droplets dispersed in the other of the first solution and the second solution and the long axis of the particles is longer than a diameter of the droplets in the mixture, andcontinuing the agitation until the particles assemble into aggregates of particles with at least 30% of the particles aligned in parallel along the long axis.2. The method of claim 1 , wherein the agitation is stochastic.3. The method of claim 1 , wherein the agitation is effected by ultrasound claim 1 , shaking or stirring claim 1 , or the agitation is effected by mechanical shaking.4. The method of claim 1 , wherein the droplet is smaller in diameter than half the length of the long axis of the particle.5. The method of claim 1 , wherein the droplet is smaller in diameter than half the length of the short axis of the particle.6. The method of claim 1 , wherein of the first solution or the second solution comprises 0 ...

Подробнее
Номер записи: 88
14-05-2020 дата публикации

Multilayer Polymer Film

Номер: US20200147945A1
Автор: Carbajal Leopoldo Alejandro, KOURTAKIS Kostantinos, LAMONTIA MARK ALLAN, Rossi Gene M, YAHYAZADEHFAR MOBIN
Принадлежит:

In a first aspect, a multilayer polymer film includes a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide and a second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide. An elastic modulus of the first transparent, colorless polymer layer is different than an elastic modulus of the second transparent, colorless polymer layer. The first and second transparent, colorless polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes the multilayer polymer film of the first aspect. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display. 1. A multilayer polymer film comprising:a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide, and having a first elastic modulus; anda second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide, and having a second elastic modulus, wherein:the first elastic modulus is different from the second elastic modulus; andthe first and second transparent, colorless polymer layers are bonded by consolidation.2. The multilayer polymer film of claim 1 , wherein the first transparent claim 1 , colorless polymer layer claim 1 , the second transparent claim 1 , colorless layer claim 1 , or both the first and second transparent claim 1 , colorless polymer layers further comprise inorganic nanoparticles.3. The multilayer polymer film of claim 1 , wherein the polymer of the first transparent claim 1 , colorless polymer layer is cross-linked claim 1 , the polymer of the second transparent claim 1 , colorless polymer layer is cross-linked claim 1 , or the polymers of both the first and second transparent claim 1 , colorless polymer layers are cross-linked.4. The multilayer polymer film of claim 1 ...

Подробнее
Номер записи: 89
18-06-2015 дата публикации

Polyimide powder having high thermooxidative stability

Номер: US20150166730A1
Автор: Christian Maurer, Dieter Danzer, Harald Roegl, Juergen Eder, Markus Ungerank
Принадлежит: Evonik Fibres Gmbh

The invention relates to shaped bodies having high thermooxidative stability, which can be produced by means of direct forming and hot compression moulding processes, and to a novel polyimide powder for production thereof and to a process for production of this polyimide powder.

Подробнее
Номер записи: 90
24-06-2021 дата публикации

POLY(ACRYLONITRILE-CO-METHYL ACRYLATE) COMPOSITIONS INCLUDING A HINDERED AMINE LIGHT STABILIZER AND METHODS OF MAKING AND USING THE SAME

Номер: US20210189604A1
Автор: Buffington David
Принадлежит:

Poly(acrylonitrile-co-methyl acrylate) compositions comprising a hindered amine light stabilizer are described herein. A poly(acrylonitrile-co-methyl acrylate) composition may be in the form of a fiber, thread, yarn, and/or fabric. Also described herein are methods of making and using the poly(acrylonitrile-co-methyl acrylate) compositions and articles comprising poly(acrylonitrile-co-methyl acrylate) compositions as described herein. 1. An acrylic fiber comprising:a poly(acrylonitrile-co-methyl acrylate) having acrylonitrile units present in an amount of at least 85% by weight of the polymer; anda hindered amine light stabilizer, wherein the hindered amine light stabilizer is within the acrylic fiber.2. (canceled)3. The acrylic fiber of claim 1 , wherein the poly(acrylonitrile-co-methyl acrylate) comprises one or more additional comonomer units selected from the group consisting of vinyl acetate claim 1 , vinyl chloride claim 1 , vinylidene chloride claim 1 , styrene claim 1 , methyl methacrylate claim 1 , vinyl acetate claim 1 , sodium styrene sulfonate claim 1 , sodium methallyl sulfonate claim 1 , sodium sulfophenyl methallyl claim 1 , ether claim 1 , itaconic acid claim 1 , and any combination thereof.4. The acrylic fiber of claim 1 , wherein the poly(acrylonitrile-co-methyl acrylate) has an average molecular weight in a range from about 40 claim 1 ,000 g/mol to about 200 claim 1 ,000 g/mol.5. The acrylic fiber of claim 1 , wherein the hindered amine light stabilizer is distributed throughout the acrylic fiber.6. The acrylic fiber of claim 1 , wherein the hindered amine light stabilizer has a pKa in a range from about 3 to about 11.7. The acrylic fiber of claim 1 , wherein the hindered amine light stabilizer has a number average molecular weight in a range from about 1000 g/mol to about 20 claim 1 ,000 g/mol and/or the hindered amine light stabilizer has a molecular weight in a range from about 500 to about 4500 g/mol.8. The acrylic fiber of claim 1 , wherein ...

Подробнее
Номер записи: 91
14-06-2018 дата публикации

SUPPORTS FOR SINTERING ADDITIVELY MANUFACTURED PARTS

Номер: US20180162060A1
Автор: Mark Gregory Thomas
Принадлежит:

According to one aspect, embodiments herein provide a method comprising forming a shrinking platform of model material above a build plate, the model material including sinterable metal particles and a first binder, forming a support structure of the model material extending up from the shrinking platform, forming a first portion of the part from successive layers of the model material above the support structure, forming a release layer intervening between a surface of the part and an opposing surface of the support structure or between a surface of the shrinking platform and an opposing surface of the build plate, the release layer including a dispersed ceramic powder and a second binder, and supporting the part, the release layer, and the support structure upon the shrinking platform to form a platform-integrating part assembly, the support structure being configured to prevent the first portion from distorting from gravitational force during sintering. 1. A method of reducing distortion in an additively manufactured part , comprising:forming a shrinking platform of model material above a build plate, the model material including sinterable metal particles and a first binder;forming a support structure of the model material extending up from the shrinking platform;forming a first portion of the part from successive layers of the model material above the support structure;forming a release layer intervening between a surface of the part and an opposing surface of the support structure or between a surface of the shrinking platform and an opposing surface of the build plate, the release layer including a dispersed ceramic powder and a second binder; andsupporting all of the part, the release layer, and the support structure upon the shrinking platform to form a platform-integrating part assembly, wherein the platform-integrating part assembly is configured to be debound and sintered as a whole, and the support structure is configured to prevent the first portion of ...

Подробнее
Номер записи: 92
14-06-2018 дата публикации

Supports for sintering additively manufactured parts

Номер: US20180162061A1
Автор: Gregory Thomas Mark
Принадлежит: Markforged Inc

A method comprising depositing a part from layers of model material including sinterable metal particles and a first binder, the part surrounding a hole, depositing a first support structure from layers of the model material within the hole, depositing a first release layer of a release material above the first support structure and within the hole, the release material including a dispersed ceramic powder and a second binder, depositing a second release layer of a release material below the first support structure and within the hole, and forming a multipiece assembly of the part, the first and second release layers, and the first support structure, wherein, during sintering, the part and first support structure are configured to densify as a whole at a uniform rate, the release material is configured to reduce to a loose ceramic powder, and the first support structure is configured to prevent distortion of the hole.

Подробнее
Номер записи: 93
14-06-2018 дата публикации

SUPPORTS FOR SINTERING ADDITIVELY MANUFACTURED PARTS

Номер: US20180162062A1
Автор: Mark Gregory Thomas
Принадлежит:

A method comprising forming a shrinking platform of layers of a composite, the composite including a metal particulate filler in a first matrix, forming a shrinking support of layers of the composite upon the shrinking platform, forming a first release layer of a release material upon the shrinking support, the release material including a ceramic particulate and a second matrix, and forming a part of the composite upon the shrinking support to form a portable assembly from the combined shrinking platform, shrinking support, release layer and part, wherein substantially horizontal portions of the part are vertically supported by the shrinking platform, wherein the first release layer is configured, after sintering, to separate the part from the shrinking support and to allow the part to be readily removed from the shrinking support, and wherein the shrinking support is configured to prevent the part from distorting during sintering. 1. A method of reducing distortion in an additively manufactured part , comprising:forming a shrinking platform of successive layers of a composite, the composite including a metal particulate filler in a first matrix;forming a shrinking support of successive layers of the composite upon the shrinking platform;forming a first release layer of a release material upon the shrinking support, the release material including a ceramic particulate and a second matrix; andforming a part of the composite upon the shrinking support to form a portable assembly from the combined shrinking platform, shrinking support, release layer and part that is configured to be transported, debound, and sintered as a unit, wherein substantially horizontal portions of the part are vertically supported by the shrinking platform, wherein the first release layer is configured, after sintering, to separate the part from the shrinking support and to allow the part to be readily removed from the shrinking support, and wherein the shrinking support is configured to ...

Подробнее
Номер записи: 94
15-06-2017 дата публикации

Resin precursor, resin composition containing same, polyimide resin membrane, resin film, and method for producing same

Номер: US20170165879A1
Автор: Masaki MAITANI, Takayuki Kanada, Toshiaki Okuda, Yasuhito Iizuka, Yoshiki Miyamoto
Принадлежит: Asahi Kasei Corp

Provided is a resin composition including a polyimide precursor that has exceptional adhesiveness to glass substrates and that does not generate particles during laser detachment. A resin composition containing (a) a polyimide precursor, (b) an organic solvent, and (d) an alkoxysilane compound, wherein the resin composition shows polyimide obtained by imidation of the (a) polyimide precursor after application of the resin composition to the surface of a support, the residual stress with the support is from −5 MPa to 10 MPa, and the 308 nm absorbance of the (d) alkoxysilane compound when made into a 0.001 mass % NMP solution is from 0.1 to 0.5 at a solution thickness of 1 cm.

Подробнее
Номер записи: 95
21-05-2020 дата публикации

ANISOTROPIC FILM AND METHOD FOR MANUFACTURING ANISOTROPIC FILM

Номер: US20200156291A1
Автор: IGUCHI Hiroyuki, Kashiwagi Tsutomu, SHIOBARA Toshio
Принадлежит: SHIN-ETSU CHEMICAL CO., LTD.

This is to provide an anisotropic electro-conductive film having high reliability, which electrically connects circuit electrodes having a fine pattern. Provided is an anisotropic film containing an insulating resin and particle groups, wherein the particle groups are groups of particles in which a plurality of particles are bound together with a binder, and the particle groups are regularly arranged with an interval of 1 μm to 1,000 μm. 1. An anisotropic film which comprises an insulating resin and particle groups , wherein the particle groups are groups of particles in which a plurality of particles are bound together with a binder , and the particle groups are regularly arranged with an interval of 1 μm to 1 ,000 μm.2. The anisotropic film according to claim 1 , wherein a difference in a linear expansion coefficient between the insulating resin and the particle groups at −50° C. to 200° C. is 1 to 200 ppm/K.3. The anisotropic film according to claim 1 , wherein the binder is a resin composition having the same composition as the insulating resin.4. The anisotropic film according to claim 1 , wherein the binder is a resin composition having a different composition from the insulating resin.5. The anisotropic film according to claim 1 , wherein the particles are electro-conductive particles claim 1 , and the particle groups are electro-conductive particle groups.6. The anisotropic film according to claim 1 , wherein the particles are heat conductive particles claim 1 , and the particle groups are heat conductive particle groups.7. The anisotropic film according to claim 1 , wherein the particles are phosphor claim 1 , and the particle groups are phosphor particle groups.8. The anisotropic film according to claim 1 , wherein the particles are magnetic particles claim 1 , and the particle groups are magnetic particle groups.9. The anisotropic film according to claim 1 , wherein the particles are electromagnetic wave absorbing filler claim 1 , and the particle groups ...

Подробнее
Номер записи: 96
25-06-2015 дата публикации

NOVEL SHAPING PROCESS FOR PMI FOAM MATERIALS AND/OR COMPOSITE COMPONENTS PRODUCED THEREFROM

Номер: US20150174798A1
Автор: Kraatz Arnim, PINTO Jorge, Roth Matthias Alexander, Schlager Dieter, Suendermann Joern Daniel, Zimmermann Rainer
Принадлежит:

A disclosed process includes steps of heating a foamed material by irradiation with near infrared radiation having a wavelength between 0.78 and 1.40 μm to form a heated material, forming the heated material with a forming tool to obtain a formed material, and cooling the formed material and demolding to obtain a final workpiece. The foamed material may be constructed as a composite ply construction including an outer material and a foamed core between the outer material. The foamed material may contain a poly(meth)acrylimde, a polypropylene or a highly-crosslinked polyurethane. 1. A process for forming foamed materials , wherein the foamed material comprises a poly(meth)acrylimide , a polypropylene , or a highly-crosslinked polyurethane , said process comprising:heating the foamed material by irradiation with near infrared radiation having a wavelength between 0.78 and 1.40 μm, to form a heated material;forming the heated material with a forming tool, to obtain a formed material; andcooling the formed material and demolding to obtain a final workpiece.2. The process of claim 1 , wherein the heating and the forming occur in two separate tools and the process comprises:introducing the foamed material into a machine-side active region of heating fields;heating the foamed material by irradiation with the near infrared radiation having a wavelength between 0.78 and 1.40 μm, to form the heated material;transferring the heated material into the forming tool;forming the heated material with the forming tool, to obtain the formed material; andcooling the formed material and demolding to obtain the final workpiece.3. The process of claim 1 , wherein the heating and the forming occur in one tool and the process comprises:introducing the foamed material into a forming tool equipped with a removable heating field;heating the foamed material by irradiation with the near infrared radiation having a wavelength between 0.78 and 1.40 μm, to form the heated material;removing heat ...

Подробнее
Номер записи: 97
29-09-2022 дата публикации

Imide-Terminated Prepolymer, Preparation Method Therefor, Curable Resin Composition, Use Thereof and Dual Curing Method

Номер: US20220306793A1
Автор: Hailun Borjigin, Lingzhu Zhang
Принадлежит: Zhejiang Xunshi Technology Co ltd

Provided are an imide-terminated prepolymer, a preparation method therefor, a curable resin composition, use thereof and a dual curing method. An end capped, imide-terminated prepolymer is mixed with at least one photopolymerizable ethylenic monomer, at least one photoinitiator and diamine, and optionally a pigment to form a curable resin composition, which, in a first step, is irradiated under conditions effective to polymerize the at least one ethylenic monomer. The irradiated composition is then heat-treated under conditions effective to cause a transimidation reaction between the prepolymer and the diamine to provide a solid polymer.

Подробнее
Номер записи: 98
21-05-2020 дата публикации

Use of sacrificial agents in manufacture of gypsum wallboard

Номер: US20200157008A1
Автор: Russell L. Hill
Принадлежит: Boral IP Holdings Australia Pty Ltd

The present invention relates to the use of sacrificial agents to counteract the deleterious impact of gypsum contaminants on the effectiveness of certain stucco additives, particularly, water reducing agents and foaming agents, in a stucco slurry used to make gypsum wallboard.

Подробнее
Номер записи: 99
01-07-2021 дата публикации

SINTERABLE SEPARATION MATERIAL IN ADDITIVE MANUFACTURING

Номер: US20210197493A1
Автор: Chao Michelle Ling, Mark Gregory Thomas, WOODRUFF Rick Bryan
Принадлежит:

According to one aspect, embodiments of the invention provide a method of 3D printing, comprising depositing a model material in successive layers to form a part, the model material being a metal composite including greater than 50% by volume metal powder and less than 50% by volume a first removable binder, depositing the model material in successive layers to form a support structure adjacent the part, depositing a sinterable separation material between a surface of the part and a surface of the support structure, the sinterable separation material formed from 10-40% by volume ceramic powder and greater than 50% by volume a second removable binder, debinding the first removable binder of the model material and the second removable binder of the sinterable separation material, and sintering the part, the support structure, and the sinterable separation material at a temperature profile that sinters the model material and the sinterable separation material. 128-. (canceled)29. A method of additively manufacturing an object , the method comprising:depositing a composite including a metal particulate filler and a debindable matrix in successive layers to form a densification linking platform, densification linking supports, and a densification linking part, at least a portion of the successive layers of the object having at least one wall substantially enclosing an interior volume of a part;forming a debinding acceleration structure having interconnected chambers and a plurality of access channels that penetrate one or more of the at least one wall exposing the composite, such that when exposed to a fluid debinder during a debinding process, the exposed composite forms a brown part including the debound densification linking platform, the debound densification linking supports, and the debound densification linking part;debinding the composite including penetrating the fluid debinder into the debinding acceleration structure through the plurality of access channels to ...

Подробнее
Номер записи: 100