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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 34. Отображено 32.
11-04-2017 дата публикации

Curable epoxy resin compositions

Номер: US0009617413B2
Автор: Angela I. Padilla-Acevedo, Theofanis Theofanous, Nikhil E. Verghese, Fabio Aguirre Vargas, PADILLA-ACEVEDO ANGELA I, THEOFANOUS THEOFANIS, VERGHESE NIKHIL E, AGUIRRE VARGAS FABIO, Padilla-Acevedo Angela I., Theofanous Theofanis, Verghese Nikhil E., Aguirre Vargas Fabio
Принадлежит: Dow Global Technologies LLC, DOW GLOBAL TECHNOLOGIES LLC

A curable composition including (a) at least one epoxide compound comprising: (i) at least one solid or semi-solid epoxy resin; and (ii) at least one divinylarene dioxide resin compound; and (b) at least one hardener; wherein the curable composition being cured comprises a cured thermoset product having a Tg of greater than about 120° C. A thermoset can be prepared from the above curable composition.

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Номер записи: 1
23-05-2017 дата публикации

Toughening agent for epoxy thermoset

Номер: US0009657118B2
Автор: Kaoru Aou, Rajat Duggal, Marvin L. Dettloff, Theofanis Theofanous, Eddy Garcia-Meitin, Nikhil Verghese, AOU KAORU, DUGGAL RAJAT, DETTLOFF MARVIN L, THEOFANOUS THEOFANIS, GARCIA-MEITIN EDDY, VERGHESE NIKHIL, Aou Kaoru, Duggal Rajat, Dettloff Marvin L., Theofanous Theofanis, Garcia-Meitin Eddy, Verghese Nikhil
Принадлежит: Dow Global Technologies LLC, AOU KAORU, DUGGAL RAJAT, DETTLOFF MARVIN L, THEOFANOUS THEOFANIS, GARCIA-MEITIN EDDY, VERGHESE NIKHIL, DOW GLOBAL TECHNOLOGIES LLC, Aou Kaoru, Duggal Rajat, Dettloff Marvin L., Theofanous Theofanis, Garcia-Meitin Eddy, Verghese Nikhil

An epoxy thermoset that includes a reaction product of a toughening agent prepared from a reaction of a first epoxy resin and a polyether polyamine, a second epoxy resin and a liquid amine hardener for the toughening agent and the second epoxy resin. The toughening agent is an adduct of the second epoxy resin and the polyether polyamine. The polyether polyamine phase of the toughening agent separates to form particles in the epoxy thermoset, where the particles have a volume average diameter in a range from 20 nanometers to 200 nanometers.

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Номер записи: 2
10-04-2013 дата публикации

Curable epoxy resin compositions and composites made therefrom

Номер: CN103038272A
Автор: Theofanous Theofanis, Verghese Kandathil E., Jacob George
Принадлежит:

A diluent-free curable epoxy resin composition for preparing a composite comprising: (A) at least one epoxy resin composition comprising a blend of: (A1) at least one epoxy resin, and (A2) at least one divinylarene dioxide; and (B) at least one hardener composition; and (C) at least one reinforcement materials; wherein the viscosity of the curable composition is the range of from about 0.15 Pa-s to about 1.5 Pa-s; and wherein the curable composition is adapted for providing a cured composite product made from the curable composition such that the composition being cured provides a cured composite product having an increased Tg of greater than about 5 DEG C as compared to a curable composition having a reactive diluent.

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Номер записи: 3
24-01-2019 дата публикации

METHOD AND APPARATUS FOR PRODUCING A LAMINATE FROM ONE OR MORE LAYERS OF MATERIAL

Номер: US20190022919A1
Автор: RATOUIT Guillaume, Theofanous Theofanis, Verghese Nikhil, VERLAEK Roel
Принадлежит:

The present invention concerns a method and apparatus () for winding a section of each of one or more layers of material () around a mandrel () and about a longitudinal axis of the mandrel (), wherein each layer of material () includes fibers and the winding is performed such that, for the wound section of each layer of material (), each of a majority of the fibers is angularly disposed relative to the longitudinal axis of the mandrel (), and: (1) disposing a tape () over the layer(s) of material () such that at least a portion of the tape () overlies at least a portion of the wound section of each layer of material () and a long dimension of the portion of the tape () is substantially parallel to the longitudinal axis of the mandrel (); and/or (2) spot-joining adjacent sections of the wound section(s) together. 1. A method for producing a laminate , the method comprising: each layer of material includes fibers; and', 'the winding is performed such that, for the wound section of each layer of material, each of a majority of the fibers is angularly disposed relative to the longitudinal axis of the mandrel; and, 'winding a section of each of one or more layers of material around a mandrel and about a longitudinal axis of the mandrel, whereinspot-joining adjacent sections of the wound section(s) together.2. The method of claim 1 , comprising disposing a tape over the layer(s) of material such that at least a portion of the tape overlies at least a portion of the wound section of each layer of material.3. The method of claim 2 , wherein the disposing is performed such that a long dimension of the portion of the tape is substantially parallel to the longitudinal axis of the mandrel.4. A method for producing a laminate claim 2 , the method comprising: each layer of material includes fibers; and', 'the winding is performed such that, for the wound section of each layer of material, each of a majority of the fibers is angularly disposed relative to the longitudinal axis of ...

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Номер записи: 4
30-01-2020 дата публикации

METHOD FOR PRODUCING FIBER TAPE

Номер: US20200031021A1
Автор: Inamdar Kapil, Kumanan Anton, Sinha Reema, Theofanous Theofanis, Verghese Nikhil
Принадлежит:

Method for producing a fiber tape including spreading a strand of fibers into a spreaded fiber layer, immersing the spreaded fiber layer in a solution, and forming a fiber tape from the spreaded fiber layer by applying heat and/or pressure to the spreaded fiber layer. 1. A method for producing a fiber tape , the method comprising:spreading a strand of fibers into a spreaded fiber layer;passing the spreaded fiber layer through a bath of a solution to immerse the spreaded fiber layer in the solution, the solution comprising:a polycarbonate material dissolved in a solvent; anda flame retardant;wherein the solution comprises between approximately 5% and approximately 30% of the polycarbonate material by weight; andwherein the solution comprises between approximately 1% and approximately 5% of the flame retardant by weight; andforming a fiber tape from the spreaded fiber layer by applying heat and/or pressure to the spreaded fiber layer.2. The method of claim 1 , wherein the flame retardant comprises a phosphate structure claim 1 , resorcinol bis(diphenyl phosphate) claim 1 , a sulfonated salt claim 1 , halogen claim 1 , phosphorous claim 1 , talc claim 1 , silica claim 1 , a hydrated oxide claim 1 , a brominated polymer claim 1 , a chlorinated polymer claim 1 , a phosphorated polymer claim 1 , a nanoclay claim 1 , an organoclay claim 1 , a polyphosphonate claim 1 , a poly[phosphonate-co-carbonate] claim 1 , a polytetrafluorethylene and styrene-acrylonitrile copolymer claim 1 , a polytetrafluoroethylene and methyl methacrylate copolymer claim 1 , and/or a polysiloxane copolymer.3. A method for producing a fiber tape claim 1 , the method comprising:spreading a strand of fibers into a spreaded fiber layer;immersing the spreaded fiber layer in a solution comprising a polymeric material dissolved in a solvent; andforming a fiber tape from the spreaded fiber layer by applying heat and/or pressure to the spreaded fiber layer;wherein the fiber tape does not comprise a flame ...

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Номер записи: 5
06-02-2020 дата публикации

Fiber-reinforced composites including and/or formed in part from fibrous non-woven layers

Номер: US20200039180A1
Автор: Nikhil Verghese, Scott Davis, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

This disclosure includes fiber-reinforced composites including and/or formed in part from fibrous non-woven layers, stacks of layers that can be consolidated to form such composites, articles, such as portable electronic device housing panels, including such composites, and methods for making such composites and articles. In some composites, at least one of the non-woven layer(s) includes: (1) a first thermoplastic material that may be present as a first set of resin fibers; (2) a second thermoplastic material that may be present as a second set of resin fibers, the second thermoplastic material having a transition temperature and/or a low-shear viscosity that is higher than that of the first thermoplastic material; (3) a first set of reinforcing fibers; and/or (4) a second set of reinforcing fibers of a type distinct from that of the first set of reinforcing fibers.

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Номер записи: 6
06-02-2020 дата публикации

VACUUM-ASSISTED TOOLS FOR USE IN PRESSING STACKS OF ONE OR MORE LAMINAE AND RELATED METHODS

Номер: US20200039201A1
Автор: Theofanous Theofanis
Принадлежит:

This disclosure includes vacuum-assisted tools () for use in pressing stacks () of one or more laminae (-) and related methods. Some tools include first and second plates (-), wherein each of the plates has an inner face and an opposing outer face, and the plates are configured to be disposed on opposing sides of a stack of one or more laminae such that the inner faces of the plates face the stack to define an interior volume () containing the stack between the inner faces, one or more seals (-) configured to be disposed between the plates such that the one or more seals surround at least a portion of the interior volume, and a port () configured to be coupled to the first plate, the second plate, and/or at least one of the one or more seals, the port configured to permit fluid communication between the portion of the interior volume and a vacuum source (). 1. A tool for use in pressing a stack of two or more laminae , the tool comprising: each of the plates has an inner face and an opposing outer face;', 'at least one of the plates comprises a first layer comprising a first material and a resilient second layer comprising a second material that is distinct from and has a lower stiffness than the first material; and', 'the first and second plates are configured to be disposed on opposing sides of a stack of two or more laminae such that the inner faces of the plates face the stack to define an interior volume containing the stack between the inner faces;, 'first and second plates, whereinone or more seals configured to be disposed between the plates such that the one or more seals surround at least a portion of the interior volume; anda port configured to be coupled to the first plate, the second plate, and/or at least one of the one or more seals, the port configured to permit fluid communication between the portion of the interior volume and a vacuum source.2. The tool of claim 1 , wherein at least one of the one or more seals comprises:a body; andone or more ribs ...

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Номер записи: 7
05-03-2015 дата публикации

Epoxy adhesive composition

Номер: US20150065613A1
Автор: Bernd Hoevel, Bharati BALIJEPALLI, Ha Q. Pham, Nikhil E. Verghese, Theofanis Theofanous
Принадлежит: Dow Chemical Co, Dow MF Produktions GmbH and Co KG oHG

A curable epoxy adhesive composition including (a) at least one first epoxy resin; (b) at least one first diluent; (c) at least one first hardener; (d) at least a first hydrophilic filler that has a predetermined aspect ratio; (e) at least a second hydrophobic filler that is different from the first filler and that has a predetermined aspect ratio; and (f) at least a third filler that is different from the first and second fillers; wherein the third filler has a predetermined aspect ratio higher than the first filler and the second filer; and wherein the volume ratio of the third filler to the combination of the first filler and second filler is in the range of from 1:1 to 10:1 such as to minimize the thermal residual stresses of the cured product made from the curable composition.

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Номер записи: 8
26-03-2020 дата публикации

THIN, HIGH-STIFFNESS LAMINATES, PORTABLE ELECTRONIC DEVICE HOUSINGS INCLUDING THE SAME, AND METHODS FOR MAKING SUCH LAMINATES AND PORTABLE ELECTRONIC DEVICE HOUSINGS

Номер: US20200094518A1
Автор: KASHIF Syed Muhammad, Theofanous Theofanis, Verghese Nikhil
Принадлежит:

The present disclosure includes thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings. Some laminates include two or more laminae, each having fibers dispersed within a matrix material, wherein the laminate has a width, a length that is perpendicular to the width, the length being between approximately 1.25 and approximately 1.80 times the width, a thickness that is perpendicular to each of the width and the length, the thickness being between approximately 1.0 mm and approximately 1.5 mm, and a first flexural rigidity along the width and a second flexural rigidity along the length, the second flexural rigidity being 10 to 30 times the first flexural rigidity. 1. A laptop A cover comprising:a composite body defining a plate having a width and a length that is perpendicular to and larger than the width; a plastic material; and', a width;', 'a length that is perpendicular to and larger than the width; and', 'a first flexural rigidity along the width and a second flexural rigidity along the length, the second flexural rigidity being 10 to 30 times the first flexural rigidity;, 'a laminate including two or more laminae, each having fibers dispersed within a matrix material, the laminate having], 'wherein the composite body includeswherein the length of the laminate is at least 50% of the length of the plate; andwherein the laminate is disposed within and/or on the plate such that the length of the laminate is aligned with the length of the plate.2. The laptop A cover of claim 1 , wherein the plate includes a planar portion and a lip that extends outwardly from and surrounds at least a majority of the planar portion.3. The laptop A cover of claim 1 , wherein:the length of the laminate is between approximately 1.25 and approximately 1.80 times the width of the laminate; and/orthe thickness of the laminate is between approximately 1.0 millimeter (mm) and ...

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Номер записи: 9
02-06-2016 дата публикации

CURABLE COMPOSITIONS

Номер: US20160152819A1
Автор: Balijepalli Bharati, Lowrey James R., Theofanous Theofanis
Принадлежит:

A curable composition comprising (a) at least one epoxy resin; (b) at least one curing agent; (c) at least one core shell rubber toughening agent; and (d) at least one non-reactive diluent adapted for reducing the difference in temperature between Tg1 and Tg2; a curable epoxy adhesive composition comprising the above curable composition; and a cured product made from the curable composition. 1. A curable composition comprising (a) at least one epoxy resin;(b) at least one curing agent; (c) at least one core shell rubber toughening agent; and(d) at least one non-reactive diluent adapted for reducing the difference in temperature between Tg1 and Tg2.2. The curable composition of claim 1 , including further a rheology modifying agent claim 1 , a supplemental toughening agent claim 1 , an acrylate compound adapted for reducing the peak exotherm temperature of the curable composition claim 1 , or mixtures thereof.3. The curable composition of claim 1 , wherein the at least one epoxy resin is present in the composition at a concentration of from about 20 weight percent to about 70 weight percent claim 1 , based on the total weight of the total composition; wherein the stoichiometric ratio of the total epoxy resin to the total curing agent in the composition is from about 1 to about 0.8; wherein the at least one core shell rubber toughening agent is present in the composition at a concentration of from about 1 weight percent to about 15 weight percent claim 1 , based on the total weight of the total composition; and wherein the at least one non-reactive diluent is present in the composition at a concentration of from about 1 weight percent to about 50 weight percent claim 1 , based on the total weight of the total composition.4. The curable composition of claim 1 , wherein the at least one non-reactive diluent comprises a polyalkylene glycol.5. The curable composition of claim 1 , wherein components (a)-(d) are separated into two components comprising (I) an epoxy resin ...

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Номер записи: 10
06-08-2015 дата публикации

CURABLE EPOXY RESIN COMPOSITIONS

Номер: US20150218364A1
Автор: Aguirre Vargas Fabio, Padilla-Acevedo Angela I., Theofanous Theofanis, Verghese Nikhil E.
Принадлежит: Dow Global Technologies LLC

A curable composition including (a) at least one epoxide compound comprising: (i) at least one solid or semi-solid epoxy resin; and (ii) at least one divinylarene dioxide resin compound; and (b) at least one hardener; wherein the curable composition being cured comprises a cured thermoset product having a Tg of greater than about 120° C. A thermoset can be prepared from the above curable composition. 1. A curable composition comprising: (i) at least one solid or semi-solid epoxy resin; and', '(ii) at least one divinylarene dioxide resin compound; and, '(a) at least one epoxide compound comprising(b) at least one hardener;wherein the curable composition being cured comprises a cured thermoset product having a Tg of greater than about 120° C.2. The curable composition of claim 1 , wherein the at least one solid or semi-solid epoxide compound comprises a novolac epoxy resin.3. The curable composition of claim 1 , wherein the at least one solid or semi-solid epoxide compound has a viscosity in the range of between about 0.1 Pa·s to about 50 Pa·s at the processing temperatures of from about 50° C. to about 180° C.; and wherein the concentration of the at least one solid or semi-solid epoxide compound comprises from about 5 weight percent to about 95 weight percent:4. The curable composition of claim 1 , wherein the at least one divinylarene dioxide resin compound comprises divinylbenzene dioxide.5. The curable composition of claim 1 , wherein the at least one divinylarene dioxide resin compound has a viscosity of from about 1 mPa·s to about 20 mPa·s; and wherein the concentration of the at least one divinylarene dioxide resin compound comprises from about 5 weight percent to about 95 weight percent.6. The curable composition of claim 1 , wherein the at least one curing agent comprises 4 claim 1 ,4′-diaminophenylsulfone claim 1 , dicyandiamide claim 1 , or mixtures thereof; andwherein the concentration of the at least one curing agent comprises from about 3 weight percent ...

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Номер записи: 11
23-10-2014 дата публикации

BIMODAL TOUGHENING AGENTS FOR THERMOSETTABLE EPOXY RESIN COMPOSITIONS

Номер: US20140316068A1
Автор: Jacob George C., Pham Ha Q., Srivastava Yasmin N., Theofanous Theofanis, Valette Ludovic, Verghese Nikhil E.
Принадлежит: Dow Global Technologies LLC

A bimodal toughening agent comprising a) a first preformed coreshell toughening agent and b) a second preformed coreshell toughening agent wherein the second preformed coreshell toughening agent has a particle size of at least two times larger than that of the first preformed coreshell toughening agent, and the use of the bimodal toughening agent in a thermosettable epoxy resin composition, is disclosed. 1. A bimodal toughening agent comprising:a) a first preformed coreshell toughening agent andb) a second preformed coreshell toughening agent;wherein the second preformed coreshell toughening agent has a particle size of at least two times larger than that of the first preformed coreshell toughening agent.2. The bimodal toughening agent of claim 1 , wherein both said first preformed coreshell toughening agent and said second coreshell toughening agent are etastomeric.3. The bimodal toughening agent of claim 1 , wherein said first preformed coreshell toughening agent and said second preformed coreshell toughening agent comprise claim 1 , independently of one another claim 1 , a shell selected from the group consisting of polymethyl methacrylates claim 1 , modified acrylates claim 1 , and combinations thereof and a core selected from the group consisting of polybutadiene claim 1 , polystyrene claim 1 , polybutylacrylates claim 1 , and combinations thereof.4. The bimodal toughening agent of claim 1 , wherein the first preformed coreshell toughening agent is present in an amount in the range of from 0.1 weight percent to 15 weight percent based on the total weight of the bimodal toughening agent and wherein the second preformed coreshell toughening agent is present in an amount in the range of from 0.1 weight percent to 15 based on the total weight of the bimodal toughening agent.5. The bimodal toughening agent of claim 1 , wherein the particle size of the first preformed coreshell toughening agent is in the range of from 5 nm to 300 nm and the particle size of the ...

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Номер записи: 12
04-12-2014 дата публикации

Toughening agent for epoxy thermoset

Номер: US20140357802A1
Автор: Eddy Garcia-Meitin, Kaoru Aou, Marvin L. Dettloff, Nikhil Verghese, Rajat Duggal, Theofanis Theofanous
Принадлежит: Dow Global Technologies LLC

An epoxy thermoset that includes a reaction product of a toughening agent prepared from a reaction of a first epoxy resin and a polyether polyamine, a second epoxy resin and a liquid amine hardener for the toughening agent and the second epoxy resin. The toughening agent is an adduct of the second epoxy resin and the polyether polyamine. The polyether polyamine phase of the toughening agent separates to form particles in the epoxy thermoset, where the particles have a volume average diameter in a range from 20 nanometers to 200 nanometers.

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Номер записи: 13
28-12-2017 дата публикации

Multiple ply layered composite having low areal weight

Номер: US20170371980A1
Автор: Dharik MALLAPRAGADA, Nikhil Verghese, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

A global optimization tool may be used to predict characteristics of a multiple ply layered composite as a condition of one or more continuous variables and/or one or more binary variables. For example, the global optimization tool may predict characteristics of a composite for a large range of fiber orientation angles of each of layer of the ply. The optimization tool may include solving a mixed integer nonlinear programming (MINLP) model to obtain a multiple ply layered composite design that is optimized relative to objectives, such as areal weight and cost. Thus, the global optimization tool may be able to identify composite designs with lower areal weight and/or lower cost than the composite designs identified by prior art trial and error methods or heuristic algorithms. When a composite design is identified as meeting certain criteria that are input to the global optimization tool, that composite design may be manufactured.

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Номер записи: 14
29-01-2015 дата публикации

Curable compositions

Номер: CA2917693A1
Автор: Bharati BALIJEPALLI, James R. Lowrey, Theofanis Theofanous
Принадлежит: Dow Global Technologies LLC

A curable composition comprising (a) at least one epoxy resin; (b) at least one curing agent; (c) at least one core shell rubber toughening agent; and (d) at least one non-reactive diluent adapted for reducing the difference in temperature between Tg1 and Tg2; a curable epoxy adhesive composition comprising the above curable composition; and a cured product made from the curable composition.

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Номер записи: 15
18-12-2019 дата публикации

Method for producing fiber tape

Номер: EP3580030A1
Автор: Anton Kumanan, Kapil INAMDAR, Nikhil Verghese, Reema Sinha, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

Method for producing a fiber tape including spreading a strand of fibers into a spreaded fiber layer, immersing the spreaded fiber layer in a solution, and forming a fiber tape from the spreaded fiber layer by applying heat and/or pressure to the spreaded fiber layer.

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Номер записи: 16
29-12-2011 дата публикации

Curable epoxy resin compositions and composites made therefrom

Номер: CA2803851A1
Автор: George Jacob, Kandathil E. Verghese, Theofanis Theofanous
Принадлежит: Dow Global Technologies LLC

A diluent-free curable epoxy resin composition for preparing a composite comprising: (A) at least one epoxy resin composition comprising a blend of: (A1) at least one epoxy resin, and (A2) at least one divinylarene dioxide; and (B) at least one hardener composition; and (C) at least one reinforcement materials; wherein the viscosity of the curable composition is the range of from about 0.15 Pa-s to about 1.5 Pa-s; and wherein the curable composition is adapted for providing a cured composite product made from the curable composition such that the composition being cured provides a cured composite product having an increased Tg of greater than about 5 °C as compared to a curable composition having a reactive diluent.

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Номер записи: 17
26-05-2021 дата публикации

Portable electronic device housings having laminate plates and sidewalls and methods of making the same

Номер: EP3825116A1
Автор: KASHIF Syed Muhammad, Nikhil Verghese, Sandeep Kulkarni, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

A portable electronic device housing can comprise a plate laminate and a rim comprising one or more rim laminates. Each of the plate and rim laminates comprises two or more laminae, each including fibers dispersed in a matrix material. The fibers include fibers aligned in a first direction, fibers aligned in a second direction that is perpendicular to the first direction, fibers aligned in a third direction that is angularly disposed relative to the first direction by a first angle that is between 10 and 85 degrees, and/or fibers aligned in a fourth direction that is angularly disposed relative to the first direction by a second angle that is equal and opposite to the first angle. For each of the plate and rim laminates, at least one lamina includes fibers aligned in the first direction and at least one lamina includes fibers aligned the second, third, or fourth directions.

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Номер записи: 18
05-04-2012 дата публикации

Curable epoxy resin compositions and composites made therefrom

Номер: WO2011163282A3
Автор: George Jacob, Kandathil E. Verghese, Theofanis Theofanous
Принадлежит: Dow Global Technologies LLC

A diluent-free curable epoxy resin composition for preparing a composite comprising: (A) at least one epoxy resin composition comprising a blend of: (A1) at least one epoxy resin, and (A2) at least one divinylarene dioxide; and (B) at least one hardener composition; and (C) at least one reinforcement materials; wherein the viscosity of the curable composition is the range of from about 0.15 Pa-s to about 1.5 Pa-s; and wherein the curable composition is adapted for providing a cured composite product made from the curable composition such that the composition being cured provides a cured composite product having an increased Tg of greater than about 5 °C as compared to a curable composition having a reactive diluent.

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Номер записи: 19
25-04-2017 дата публикации

bimodal hardening agent, thermosetting epoxy resin composition, process for preparing a thermosetting epoxy resin composition and product

Номер: BR112014008701A2
Автор: C Jacob George, K E Verghese Nikhil, N Srivastava Yasmin, Q Pham Ha, Theofanous Theofanis, Valette Ludovic
Принадлежит: Dow Global Technologies LLC

resumo “agente enrijecedor bimodal, composição de resina epóxi termofixável, processo para preparar uma composição de resina epóxi termofixável e produto” agente enrijecedor bimodal compreendendo a) um primeiro agente enrijecedor núcleo/casca pré-formado e b) um segundo agente enrijecedor núcleo/casca pré-formado, sendo que o segundo agente enrijecedor núcleo/casca pré-formado tem um tamanho de partícula pelo menos duas vezes maior que o do primeiro agente enrijecedor núcleo/casca pré-formado, sendo descrito o uso do agente enrijecedor bimodal em uma composição de resina epóxi termofixável. 1/1 "bimodal hardening agent, thermofixable epoxy resin composition, process for preparing a thermofixable epoxy resin composition and product" bimodal hardening agent comprising a) a first preformed core / shell hardening agent and b) a second pre core / shell hardening agent The second preformed core / shell hardening agent has a particle size at least twice as large as the first preformed core / shell thermosetting epoxy resin. 1/1

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Номер записи: 20
09-10-2019 дата публикации

Thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings

Номер: EP3549763A1
Автор: Nikhil Verghese, Syed Muhammad KASHIF, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

The present disclosure includes thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings. Some laminates include an inner section having one or more first laminae and one or more second laminae, and first and second outer sections disposed on opposing sides of the inner section, each having one or more third laminae. The laminate has a width and a length that is perpendicular to the width. Each of the first lamina(e) can have fibers aligned in a direction parallel to the length, each of the second lamina(e) can have fibers aligned in a direction parallel to the width, and each of the third lamina(e) can have fibers aligned in a direction angularly disposed at an angle of at least 10 degrees to each of the length and the width.

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Номер записи: 21
22-01-2020 дата публикации

Press platens having fluid-driven variable pressing surface geometry and related methods

Номер: EP3595883A1
Автор: Roel VERLAEK, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

This disclosure includes platens for use in static presses, static presses including the same, and related methods. Some platens include a body (120) configured to be coupled to an actuator of a press and a plate (110) configured to be coupled to the body such that the plate defines at least a first portion of a pressing surface (140) of the platen, the pressing surface (140) configured to contact an object when the object is pressed by the platen, the plate and the body (120) cooperate to define a cavity (130) underlying the first portion of the pressing surface, at least one of the body and the plate define an inlet (190) in fluid communication with the cavity, and the first portion of the pressing surface is configured to deflect in response to pressure changes within the cavity (130).

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Номер записи: 22
01-06-2016 дата публикации

Curable compositions

Номер: EP3024908A1
Автор: Bharati BALIJEPALLI, James R. Lowrey, Theofanis Theofanous
Принадлежит: Blue Cube IP LLC

A curable composition comprising (a) at least one epoxy resin; (b) at least one curing agent; (c) at least one core shell rubber toughening agent; and (d) at least one non-reactive diluent adapted for reducing the difference in temperature between Tg1 and Tg2; a curable epoxy adhesive composition comprising the above curable composition; and a cured product made from the curable composition.

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Номер записи: 23
17-07-2014 дата публикации

Curable epoxy resin compositions

Номер: WO2014055305A3
Автор: Angela I. Padilla-Acevedo, Kandathil E. Verghese, Theofanis Theofanous, Vargas Fabio Aguirre
Принадлежит: Dow Global Technologies LLC

A curable composition including (a) at least one epoxide compound comprising: (i) at least one solid or semi-solid epoxy resin; and (ii) at least one divinylarene dioxide resin compound; and (b) at least one hardener; wherein the curable composition being cured comprises a cured thermoset product having a Tg of greater than about 120 °C. A thermoset can be prepared from the above curable composition.

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Номер записи: 24
09-01-2019 дата публикации

Method and apparatus for producing a laminate from one or more layers of material

Номер: EP3423261A1
Автор: Guillaume RATOUIT, Nikhil Verghese, Roel VERLAEK, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

The present invention concerns a method and apparatus (14a) for winding a section of each of one or more layers of material (18a) around a mandrel (30) and about a longitudinal axis of the mandrel (30), wherein each layer of material (18a) includes fibers and the winding is performed such that, for the wound section of each layer of material (18a), each of a majority of the fibers is angularly disposed relative to the longitudinal axis of the mandrel (30), and: (1) disposing a tape (82) over the layer(s) of material (18a) such that at least a portion of the tape (82) overlies at least a portion of the wound section of each layer of material (18a) and a long dimension of the portion of the tape (82) is substantially parallel to the longitudinal axis of the mandrel (30); and/or (2) spot-joining adjacent sections of the wound section(s) together.

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Номер записи: 25
27-09-2018 дата публикации

Thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings

Номер: WO2018172918A1
Автор: Nikhil Verghese, Syed Muhammad KASHIF, Theofanis Theofanous
Принадлежит: Sabic Global Technologies B.V.

The present disclosure includes thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings. Some laminates include two or more laminae, each having fibers dispersed within a matrix material, wherein the laminate has a width, a length that is perpendicular to the width, the length being between approximately 1.25 and approximately 1.80 times the width, a thickness that is perpendicular to each of the width and the length, the thickness being between approximately 1.0 mm and approximately 1.5 mm, and a first flexural rigidity along the width and a second flexural rigidity along the length, the second flexural rigidity being 10 to 30 times the first flexural rigidity.

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Номер записи: 26
08-08-2019 дата публикации

Scrap-minimizing methods for producing laminates from tapes and laminates produced using those methods

Номер: WO2019150302A1
Автор: Nikhil Verghese, Recep YALDIZ, Theofanis Theofanous
Принадлежит: Sabic Global Technologies B.V.

This disclosure includes scrap-minimizing methods for producing laminates from tapes and laminates produced using those methods. Some methods include unrolling first and second sections of tape from respective rolls, the first section having a first width that is smaller than a second width of the second section, cutting the first section along its width to produce one or more rectangular first laminae, each having a length that is within 5% of the second width, cutting the second section along its width to produce one or more rectangular second laminae, each having a length that is within 5% of the first width, and layering the laminae to form a rectangular stack in which the width(s) of the first lamina(e) are aligned with the length(s) of the second lamina(e) and having a length and a width that are within 5% of the second width and the first width, respectively.

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Номер записи: 27
05-02-2020 дата публикации

Vacuum-assisted tools for use in pressing stacks of one or more laminae and related methods

Номер: EP3600890A1
Автор: Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

This disclosure includes vacuum-assisted tools (10a) for use in pressing stacks (284) of one or more laminae (288a-288i) and related methods. Some tools include first and second plates (14a-14f), wherein each of the plates has an inner face and an opposing outer face, and the plates are configured to be disposed on opposing sides of a stack of one or more laminae such that the inner faces of the plates face the stack to define an interior volume (18) containing the stack between the inner faces, one or more seals (176, 176a-176e) configured to be disposed between the plates such that the one or more seals surround at least a portion of the interior volume, and a port (224) configured to be coupled to the first plate, the second plate, and/or at least one of the one or more seals, the port configured to permit fluid communication between the portion of the interior volume and a vacuum source (26).

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Номер записи: 28
05-02-2020 дата публикации

Thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings

Номер: EP3600871A1
Автор: Nikhil Verghese, Syed Muhammad KASHIF, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

The present disclosure includes thin, high-stiffness laminates, portable electronic device housings including the same, and methods for making such laminates and portable electronic device housings. Some laminates include two or more laminae, each having fibers dispersed within a matrix material, wherein the laminate has a width, a length that is perpendicular to the width, the length being between approximately 1.25 and approximately 1.80 times the width, a thickness that is perpendicular to each of the width and the length, the thickness being between approximately 1.0 mm and approximately 1.5 mm, and a first flexural rigidity along the width and a second flexural rigidity along the length, the second flexural rigidity being 10 to 30 times the first flexural rigidity.

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Номер записи: 29
27-08-2020 дата публикации

Hybrid unidirectional tapes, parts including the same, and methods of making such tapes and parts

Номер: WO2020170199A1
Автор: Philipp PICARD, Theodosia Kourkoutsaki, Theofanis Theofanous
Принадлежит: Sabic Global Technologies B.V.

Some unidirectional (UD) tapes (10a) include a matrix material (18) and fibers (14a, 14b) that are dispersed within the matrix material (18), the fibers (14a, 14b) including fibers (14a) of a first type and fibers (14b) of a second type that is distinct from the first type, wherein the fibers (14a, 14b) are positioned such that a cross-section of the tape (10a), taken perpendicularly to the length (22) of the tape, includes one or more first fiber regions (26) in which at least 90% of the fibers (14a) are of the first type and one or more second fiber regions (30a, 30b) in which at least 90% of the fibers (14b) are of the second type, wherein each of the fiber regions has a width (38, 42a, 42b) that is greater than or equal to 3 millimeters mm, and wherein the width of at least one of the first fiber region(s) (26) is at least 2 times larger than the width of at least one of the second fiber region(s) (30a, 30b).

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Номер записи: 30
30-12-2021 дата публикации

Tools having one or more plates for use in forming laminates using presses and related methods

Номер: US20210402751A1
Автор: Guillaume RATOUIT, Recep YALDIZ, Roel VERLAEK, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

A system for pressing one or more stacks of one or more laminae ( 22 ), the system comprising: a tool including top ( 14 b ) and bottom plates ( 14 a ) configured to be disposed on opposing sides of each of one or more stacks ( 22 ) of one or more laminae, each of the plates ( 14 a, 14 b ) having: a center region that overlies or underlies the stack(s) ( 22 ) when the stack(s) are disposed between the plates ( 14 a, 14 b ); and tabs ( 174 ) that extend outwardly from edges of the center region and are configured to be coupled to a conveyor or one or more grippers for moving the plate; and a resilient layer ( 90 ) configured to be disposed between the top plate and the stack(s) ( 22 ) or the bottom plate ( 14 a ) and the stack(s) ( 22 ); wherein the resilient layer ( 90 ) is sized to be disposable between the plates such that, for each of the plates ( 14 a, 14 b ): the resilient layer ( 90 ) overlies or underlies at least 90% of the center region; one or more portions of the resilient layer ( 90 ) neither overlie nor underlie the plate; and at least a portion of each of the tabs neither overlies nor underlies the resilient layer (( 14 a, 14 b )). Also claimed is a method for producing laminates by pressing.

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Номер записи: 31
22-01-2020 дата публикации

Tools having one or more plates for use in forming laminates using presses and related methods

Номер: EP3595860A1
Автор: Guillaume RATOUIT, Recep YALDIZ, Roel VERLAEK, Theofanis Theofanous
Принадлежит: SABIC Global Technologies BV

A system for pressing one or more stacks of one or more laminae (22), the system comprising: a tool including top (14b) and bottom plates (14a) configured to be disposed on opposing sides of each of one or more stacks (22) of one or more laminae, each of the plates (14a, 14b) having: a center region that overlies or underlies the stack(s) (22) when the stack(s) are disposed between the plates (14a, 14b); and tabs (174) that extend outwardly from edges of the center region and are configured to be coupled to a conveyor or one or more grippers for moving the plate; and a resilient layer (90) configured to be disposed between the top plate and the stack(s) (22) or the bottom plate (14a) and the stack(s) (22); wherein the resilient layer (90) is sized to be disposable between the plates such that, for each of the plates (14a, 14b): the resilient layer (90) overlies or underlies at least 90% of the center region; one or more portions of the resilient layer (90) neither overlie nor underlie the plate; and at least a portion of each of the tabs neither overlies nor underlies the resilient layer ((14a, 14b)). Also claimed is a method for producing laminates by pressing.

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Номер записи: 32