Abstract: Disclosed is a curable composition and cured products thereof. The curable composition includes a vinyl polysiloxane component, a hydrogen polysiloxane component, a polymerization catalyst, and an expandable graphite component comprising moisture. Cured products of the curable composition include foamed cells having a uniform size and distribution in the cured product. This can help to increase the water proofing and flame retardant properties of the cured product.
Type:
Grant
Filed:
August 15, 2018
Date of Patent:
November 26, 2024
Assignee:
3M Innovative Properties Company
Inventors:
Enzhong Zhang, Lianzhou Chen, Shaomin Sun, Xinxin Sun, Shaoqing Gu, Jianhua Tang, Jonathan D. Zook
Abstract: A microcellular shoe stiffener has at least one adhesive layer coextruded with and carried on a stiffener core. A liquid, such as liquid nitrogen, is introduced into the extruder for the stiffener core to produce a closed cell foam with a gaseous component. The gas reduces the weight and cost of the stiffener without significantly reducing stiffness and resiliency.
Type:
Grant
Filed:
November 2, 2020
Date of Patent:
November 12, 2024
Assignee:
Stanbee Company, Inc.
Inventors:
Dale Martell, Bruce Goldberg, Leo Provencher
Abstract: A foam material includes the reaction product of a polyol mixture and an isocyanate mixture and a boron nitride filler in an amount of ?0.01 wt. % to ?0.1 wt. %. In various forms, the boron nitride filler is of nanoparticles, is of hexagonal boron nitride, and/or is treated with a silane coupling agent.
Abstract: A foam molded article includes a main agent resin, a filler of greater than or equal to 15% by mass and less than or equal to 80% by mass, and a foaming agent of greater than or equal to 0.01% by mass and less than or equal to 10% by mass, and a foaming ratio caused by the foaming agent is greater than or equal to 1.1 times.
Abstract: The present invention is intended to provide a laminated film including a void-provided layer achieving both a high proportion of void space and a high film strength. The laminated film of the present invention includes a void-provided layer 21 and a resin film 10, the void-provided layer 21 being stacked on the resin film 10. The laminated film is produced by a production method, including steps of forming a void-provided structure 20?, which is a precursor of the void-provided layer 21 on the resin film; and causing a crosslinking reaction in the precursor 20? after the precursor forming step. The precursor 20? contains a substance that generates a basic substance by light irradiation or heating, the basic substance is not generated in the precursor forming step, the basic substance is generated by light irradiation or heating in the crosslinking reaction step, and the crosslinking reaction step has multiple stages.
Abstract: Hydrophilic coatings including a base coat layer and a top coat layer wherein at least one of the base coat and top coat compositions that form the hydrophilic coatings comprises a diacrylate compound have a number average molecular weight less than 1000.
Abstract: A composite board comprising (i) a first foam region; (ii) at least one fragile insulating material; and (iii) a second foam region, where said second foam region is substantially devoid of hydrocarbons.
Type:
Grant
Filed:
October 10, 2019
Date of Patent:
April 4, 2023
Assignee:
Holcim Technology Ltd
Inventors:
Michael J. Hubbard, Chunhua Yao, John B. Letts
Abstract: An electrolyte for use in an energy storage device, an energy storage device and a method of forming such electrolyte. The electrolyte includes a polymer matrix of at least two crosslinked structures, including a first polymeric material and a second polymeric material; and an electrolytic solution retained by the polymer matrix; wherein the electrolyte is arranged to physically deform when subjected to an external mechanical load applied to the polymer matrix.
Type:
Grant
Filed:
December 11, 2018
Date of Patent:
January 31, 2023
Assignee:
City University of Hong Kong
Inventors:
Chunyi Zhi, Longtao Ma, Zijie Tang, Hongfei Li
Abstract: Methods and combinations for making and using one or more thermally conductive cellular foam layers comprising flexible cellular foam and metallic material particulates, and said thermally-conductive cellular foam layers may be located on, under, or in cushioning foams and mattresses or placed between on, under, within, or between other layering substrates to increase the overall cooling capability of the composite. The thermally conductive foam may be used in mattresses, pillows, bedding products, medical cushioning foams, and similar materials used in bedding environments.
Type:
Grant
Filed:
January 6, 2020
Date of Patent:
August 16, 2022
Assignee:
L&P Property Management Company
Inventors:
Bruce W. Peterson, Mark L. Crawford, Matthew D. McKnight
Abstract: The present invention relates to preparations having improved efficacy as flame retardants, to the use thereof and to polyurethanes containing the preparations according to the invention.
Abstract: A process for producing rigid PUR/PIR foams comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, A5 optionally auxiliaries and additives, and B an organic polyisocyanate component. Component A1 comprises a triurethane triol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.
Type:
Grant
Filed:
December 12, 2018
Date of Patent:
June 7, 2022
Assignee:
COVESTRO DEUTSCHLAND AG
Inventors:
Hartmut Nefzger, Persefoni Hilken, Markus Meuresch, Aurel Wolf
Abstract: A surface of a rubber sponge material 4 such as a vehicle weather strip is covered with a resin coat 6 containing dispersed cellulose fibers 5.
Type:
Grant
Filed:
November 21, 2018
Date of Patent:
June 29, 2021
Assignees:
Nishikawa Rubber Co., Ltd., DAIO PAPER CORPORATION
Abstract: The present invention relates to open- and fine-celled rigid polyurethane foams which contain not only urethane groups (PUR) but also isocyanurate groups (PIR) and carbodiimide groups (CD) and to the use thereof in vacuum insulation panels.
Type:
Grant
Filed:
April 23, 2019
Date of Patent:
May 11, 2021
Assignee:
Covestro Intellectual Property GmbH & Co. KG
Inventors:
Marcel Schornstein, Peter Nordmann, Marina Reithmeier
Abstract: A monolayer membrane containing gelling polymer particles having at least one of a basic functional group and an acidic functional group, and having a thickness of less than 5 ?m. A composite having a porous carrier and gelling polymer particles having at least any one of a basic functional group and an acidic functional group and filling up the surface pores of the porous carrier. The invention can provide a novel material capable of efficiently separating an acid gas from a mixed gas.
Type:
Grant
Filed:
February 24, 2017
Date of Patent:
April 20, 2021
Assignee:
KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
Abstract: Hydrogel compositions, and corresponding methods of making, are provided. The hydrogels do not freeze, or only partially freeze, over a wide range of temperatures below the freezing temperature of water. Concurrently, these hydrogels also retain their room temperature mechanical properties (e.g., strength, modulus, elasticity) over a wide range of temperatures, including temperatures below the freezing temperature of water. The hydrogels are synthesized by adding a suitable amount of a salt together with previously cross-linked polymer gel. Hydration of the gel with aqueous solutions containing the prescribed salts not only depresses the hydrogel freezing point but protects the structure. For example, the salts do not allow the hydrogel to completely freeze, thus protecting the hydrogel from brittle failure. Whether the hydrogels partially freeze or remain non-frozen when chilled below the freezing temperature of water is determined by concentration of salt within the hydrogel.
Type:
Grant
Filed:
September 1, 2016
Date of Patent:
April 13, 2021
Assignee:
President and Fellows of Harvard College
Inventors:
Widusha Illeperuma, Zhigang Suo, Joost J. Vlassak
Abstract: There is provided a member for electrophotography, which contributes to formation of a high-quality electrophotographic image. The member for electrophotography includes an electro-conductive substrate and an electro-conductive layer as an outermost layer, wherein the electro-conductive layer contains a resin having a nitrogen-containing heterocyclic cation structure, an anion, and a specific carbon black.
Abstract: A three component composition for use in the treatment of an autoimmune disease where the first component comprises a bimodal synthetic carbon particle mixture; the second component comprises a bimodal synthetic carbon particle mixture and an anion exchange resin and the third component comprises a bimodal synthetic carbon particle mixture and a cation exchange resin.
Type:
Grant
Filed:
October 16, 2018
Date of Patent:
March 30, 2021
Assignee:
Immutrix Therapeutics, Inc.
Inventors:
Carol A Rae, Jan Simoni, Grace Simoni, John F. Moeller
Abstract: The manufacturing of articles relies on the bonding of two or more components to form some forms of the articles, such as a shoe sole bonded with a shoe upper. The bonding may be achieved with an adhesive particulate that is applied to a surface of a substrate. The adhesive particulate is selectively fused to the substrate with a controlled energy source, such as a laser. The selective application of laser energy allows for specific geometric structures of adhesive particulate to be formed on the substrate. The substrate having the fused adhesive particulate is mated with another component allowing the fused adhesive particulate to bond the first substrate and the second component.
Abstract: The use of a mixture (M) comprising nitrogen compound(s) in the preparation of polyurethanes, especially polyurethane foams, wherein said mixture (M) comprises the following constituents: (a) N,N-dimethylaminopropylamine, at least in an amount of ?5% by weight, advantageously in an amount of ?20% by weight, preferably 20%-95% by weight, further preferably 30%-70% by weight, especially 30%-60% by weight, and (b) at least one solvent, especially water, advantageously in a total amount of ?5% by weight, preferably ?10% by weight, more preferably 10%-60% by weight, especially 10%-40% by weight, % by weight based in each case on the overall mixture (M), is described.
Type:
Grant
Filed:
March 18, 2016
Date of Patent:
March 17, 2020
Assignee:
Evonik Operations GmbH
Inventors:
Thomas Günther, Mladen Vidakovic, Collins Wettey
Abstract: Disclosed are processes for producing molded polyurethane elastomers and products, such as filter end caps, that include such elastomers. The elastomers are the reaction product of a non-foaming reaction mixture comprising an isocyanate-reactive composition and an organic polyisocyanate prepolymer with an internal mold release agent.
Abstract: The present invention relates to polyurethanes obtained by mixing to give a reaction mixture of (a) polyisocyanate, (b) polymeric compounds having groups reactive toward isocyanates, (c) catalysts comprising incorporable amine catalysts, (d) phosphoric esters, polyphosphates, phosphonic esters, and/or phosphorous esters, and optionally (e) blowing agents, (f) chain extenders and/or crosslinking agents, and (h) auxiliaries and/or additives, and completing the reaction of the reaction mixture to give the polyurethane. The invention further relates to a process for producing these polyurethanes and to their use in automobile interiors.
Type:
Grant
Filed:
July 24, 2013
Date of Patent:
April 23, 2019
Assignee:
BASF SE
Inventors:
Iran Otero Martinez, Udo Hadick, Andre Meyer
Abstract: Catalyst compositions useful in the production of insulating polyurethane or polyisocyanurate foam are disclosed. The catalyst compositions impart increased stability of a mixture of the catalyst, a halogen-containing blowing agent, and a polyol. These catalyst compositions include amine/acid salts with a pH of <7.0 which can be used in combined with tertiary amine catalysts and metal-based or ammonium-based trimerization catalyst and at least one metal-based gel catalyst and optionally one or more of an additional catalyst described in (1) or (2). These improved catalysts can be used with any halogenated blowing agent, and provide substantial stability benefits with the use of hydrofluoroolefins and hydrofluorochloroolefins.
Type:
Grant
Filed:
July 26, 2013
Date of Patent:
July 17, 2018
Assignee:
Evonik Degussa GmbH
Inventors:
Juan Jesus Burdeniuc, Jean Louise Vincent, Tadao Yasue, Timothy J. Miller, Renee Jo Keller
Abstract: A polyrotaxane is blended into a polyol composition, which can reduce the tensile stress of a flexible polyurethane foam. A vertical compressive stress due to the weight of a sitting user and a tensile stress due to the input of lateral vibrations act on a urethane pad. However, by reducing the tensile stress of the flexible polyurethane foam, the direction (inclination) of a resultant force obtained by combining the compressive stress and the tensile stress can be brought close to the vertical direction. Thus, the angle of inclination of the user's hip (ischium) on the urethane pad to the vertical direction due to the input of lateral vibrations can be reduced, so that the sense of wobble of the urethane pad can be reduced.
Type:
Grant
Filed:
April 13, 2016
Date of Patent:
March 13, 2018
Assignees:
TOYO TIRE & RUBBER CO., LTD., ADVANCED SOFTMATERIALS INC.
Abstract: A polyrotaxane is blended into a polyol composition, which can reduce the tensile stress of a flexible polyurethane foam. A vertical compressive stress due to the weight of a sitting user and a tensile stress due to the input of lateral vibrations act on a urethane pad. However, by reducing the tensile stress of the flexible polyurethane foam, the direction (inclination) of a resultant force obtained by combining the compressive stress and the tensile stress can be brought close to the vertical direction. Thus, the angle of inclination of the user's hip (ischium) on the urethane pad to the vertical direction due to the input of lateral vibrations can be reduced, so that the sense of wobble of the urethane pad can be reduced.
Type:
Grant
Filed:
April 13, 2016
Date of Patent:
March 13, 2018
Assignees:
TOYO TIRE & RUBBER CO., LTD., ADVANCED SOFTMATERIALS INC.
Abstract: The invention relates to a caulking or filling device having fire-break properties and made of an elastic material comprising polyurethane foam. The foam is obtained by reacting at least one polyol having a molecular weight of 4000 to 7000 g/mol and an OH index of 20 to 40 (mg KOH/g), and an isocyanate in the form of a prepolymer or quasi-prepolymer comprising between 5 and 25% of free NCO functions. The elastic material comprises at least 50 wt % of flame-retarding agents. The invention also relates to the use of the device for making seals or fillings having fire-stopping characteristics.
Abstract: The present invention generally relates to polyurethane foam composition. In one embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of one or more liquid and/or solid fire-retardants. In another embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of one or more intumescent materials (e.g., expandable graphite (EG)). In still another embodiment, the present invention relates to polyurethane foam compositions that have increased and/or improved fire-retardant properties due to the inclusion of expandable graphite.
Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is predominately the trans isomer of the hydrochlorofluoroolefin (HCFO) HFCO-1233zd alone or in combination with a hydrofluoroolefin (HFO), hydrofluorocarbon (HFC), hydrochlorofluoroolefin (HCFO), a hydrocarbon. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
Type:
Grant
Filed:
January 11, 2016
Date of Patent:
August 22, 2017
Assignee:
Arkema Inc.
Inventors:
Benjamin Bin Chen, Philippe Bonnet, Brett L. Van Horn, Joseph S. Costa
Abstract: The present disclosure describes methods and biomimetic catalysts useful for hydrolyzing glucose polymers, such as cellulose, and oligomers, such as cellobiose, to glucose for the subsequent production of ethanol.
Type:
Grant
Filed:
March 2, 2010
Date of Patent:
May 2, 2017
Assignees:
The Trustees of the University of Pennsylvania
Abstract: A molecular recognition matrix which utilizes the interaction between molecular building blocks and the surface of a substrate to develop specific molecular recognition cavities.
Abstract: The present invention relates to a reactive formulation used to make a flame resistant flexible polyurethane foam which is particularly suited for use in under the hood vehicle applications. In particular, the flame resistant flexible polyurethane foam is made from a reactive formulation comprising an A side comprising (i) an organic isocyanate and a B side comprising (ii) an isocyanate-reactive component, (iii) a flame retardant component comprising a combination of red phosphorus, expandable graphite, and optionally sodium citrate wherein the resulting foam achieves after heat aging at 150° C. for seven days a V-0 rating at 0.5 inch according to Underwriters' Laboratories Standard 94 Flammability Test.
Abstract: New composite members, for example, useful in decks or decking systems, rail or railing systems and window-coverings or blinds and the like, as well as methods for producing the same or like items have been discovered. The composites or composite members are easy to manufacture in a variety of configurations using relatively inexpensive materials. In addition, the composites are sturdy, lightweight and have excellent weatherability properties. In addition, the composites or composite members have many of the desirable properties of natural wood products such as fences and decks and railings. For example, the composites of the invention can be made to have a wood-like look and texture, for example, without having any wood content. Moreover, unlike solid wood fences and decks, the composites of the present invention preferably are highly resistant to effects of weathering.
Abstract: One-pot reaction process for preparing epoxy-reinforced monolithic silica aerogels comprising the reaction of at least one silicon compound selected from the group consisting of alkoxysilanes, orthosilicates and combination thereof in any ratio with effective amounts of an epoxy monomer and an aminoalkoxy silane to obtain an epoxy monomer-silica sol in solution, subsequently preparing an epoxy-monomer silica gel from said silica sol solution followed by initiating polymerization of the epoxy monomer to obtain the epoxy-reinforced monolithic silica aerogel.
Type:
Grant
Filed:
September 23, 2011
Date of Patent:
April 19, 2016
Assignee:
The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
Abstract: An MDI system non-temperature sensitive memory sponge suitable for a flat foam foaming process is made by using a polyol mixture, which includes a polyether polyol and a polymer polyol, to react with an isocyanate and an auxiliary agent mixture that includes: a chain extender, a foaming agent, a pore adjusting agent, and a catalyst. The polyether polyol includes a polyoxypropylene glycerol with a molecular weight of 700 and a polyoxypropylene trihydroxy ether with a molecular weight of 4800, the polymer polyol includes a graft polyether, and the isocyanate is methylene diphenyl diisocyanate.
Abstract: A foam article for use in a seat cushion includes an open cell, polyurethane foam material that includes a base polyol; a crosslinker; an isocyanate; a surfactant; and water, that are reacted together to produce a seat cushion having dynamic and static performance specifications that are better than the performance characteristics for a traditional, high resilient material seat cushion, as well as other seating materials.
Type:
Grant
Filed:
August 28, 2014
Date of Patent:
January 26, 2016
Assignee:
Johnson Controls Technology Company
Inventors:
James T. McEvoy, Terrence M. McRoberts, Ryoko Yamasaki, William Li, Murray D. Metcalfe
Abstract: A construction board comprising a cellular body including at least one planar surface, where the cellular body includes a polyurethane or polyisocyanurate cellular structure, where the cellular structure has a density greater than about 2.5 pounds per cubic foot, an ISO index of at least 270, and where the cellular body includes at least 5.0% by weight flame retardant based on the weight of the cellular body.
Type:
Grant
Filed:
May 8, 2013
Date of Patent:
December 29, 2015
Assignee:
Firestone Building Products Company, LLC
Abstract: The invention provides a molded foam molding method capable of obtaining a molded foam in which pinholes may not be formed with ease even when a blow ratio is high and which has a high expansion ratio. The invention also provides a molded foam which includes no pinholes, is reduced in weight, and is excellent in heat insulating property. The molding method includes blending a polypropylene-based resin having an equilibrium compliance from 2.0 to 6.0 (10?3×Pa?1) with a foaming agent and kneading the blend in an extruder. The extruded foamed resin is molded so as to be fit along a mold by a pressurized fluid. Moreover, the molded foam is formed by the method described above, and has an expansion ratio from 1.5 to 5.0 times and an impact strength of not less than 30 kg·cm.
Abstract: Systems and methods related to polymer foams are generally described. Some embodiments relate to compositions and methods for the preparation of polymer foams, and methods for using the polymer foams. The polymer foams can be applied to a body cavity and placed in contact with, for example, tissue, injured tissue, internal organs, etc. In some embodiments, the polymer foams can be formed within a body cavity (i.e., in situ foam formation). In addition, the foamed polymers may be capable of exerting a pressure on an internal surface of a body cavity and preventing or limiting movement of a bodily fluid (e.g., blood, etc.).
Type:
Grant
Filed:
August 12, 2011
Date of Patent:
November 3, 2015
Assignee:
Arsenal Medical, Inc.
Inventors:
Upma Sharma, Irina Gitlin, Gregory T. Zugates, Adam Rago, Parisa Zamiri, Rany Busold, Toby Freyman, Robert J. Caulkins, Quynh P. Pham, Changcheng You, Jeffrey D. Carbeck
Abstract: A sealing gasket includes a liner and a polyurethane foam layer disposed on the liner. The polyurethane foam layer can have a density of 50 kg/m3 to 250 kg/m3, a force-to-compress at 25% compression of not greater than 5.0 psi, and an 50% springback parameter of not greater than 2.0 seconds. The polyurethane foam has a thickness in a range of 0.3 mm to 10.0 mm. A surface of the polyurethane foam layer has a skin.
Abstract: The present invention relates to mixtures of 1,1,1,3,3,3-hexafluorobutene (1336mzzm) and 1-chloro-3,3,3-trifluoropropene (1233zd). The blends are useful as blowing agents for polymer foam, solvents, aerosol propellants and heat transfer media.
Type:
Grant
Filed:
October 19, 2011
Date of Patent:
September 29, 2015
Assignee:
HONEYWELL INTERNATIONAL INC.
Inventors:
Mary C. Bogdan, Clifford P. Gittere, James M. Bowman, Yiu Keung Ling, David J. Williams
Abstract: The rigid polyurethane foam includes thermally expandable fine particles disposed between two or more adjacent cells, so as to be exposed to the inside and/or the outside of a unit cell, and a filler which is dispersed on the surface of the thermally expandable fine particles and/or on the inner and/or outer surfaces of the unit cell. The cells of the rigid polyurethane foam can be small and uniform in size and can be highly insulating.
Type:
Grant
Filed:
February 7, 2013
Date of Patent:
June 2, 2015
Assignee:
Cheil Industries Inc.
Inventors:
Kyung Hyun Baek, Jung Bae Jun, Jung Kyu Ju
Abstract: The present invention relates to a composition in the form of a dispersion, a method for the manufacturing of said composition and uses thereof.
Abstract: The present invention provides a urethane foam molded product that has high thermal conductivity with minimal change to its physical properties. A simple method for producing the same is also provided. The urethane foam molded product includes a base material formed of a polyurethane foam, and a thermal conductive filler mixed in the base material and oriented to form mutual connections. The thermal conductive filler is formed of composite particles that include thermal conductive particles formed of a nonmagnetic material, and magnetic particles adhered to the surfaces of the thermal conductive particles.
Type:
Grant
Filed:
March 24, 2011
Date of Patent:
May 19, 2015
Assignees:
SUMITOMO RIKO COMPANY LIMITED, TOKAI CHEMICAL INDUSTRIAS, LTD.
Abstract: Various uses of monochlorotrifluoropropenes, in combination with one or more other components, including other fluoroalkenes, hydrocarbons; hydrofluorocarbons (HFCs), ethers, alcohols, aldehydes, ketones, methyl formate, formic acid, water, trans-1,2-dichloroethylene, carbon dioxide and combinations of any two or more of these, in a variety of applications, including as blowing agents, are disclosed.
Abstract: The embodiments of the invention are directed to a composite material comprising a fiber reinforcing material, a binder resin and polyurethane foam particles. Other embodiments are related to a process for manufacturing a composite material comprising a fiber reinforcing material, a binder resin and polyurethane foam particles, the method comprising depositing the binder resin and polyurethane foam particles the fiber reinforcing material to form a composite precursor and treating the composite precursor to form the composite material.
Type:
Grant
Filed:
January 22, 2008
Date of Patent:
February 17, 2015
Assignee:
Mobius Technologies, Inc.
Inventors:
Paul R. Berthevas, Michael Schoeler, Michael Grossenbacher, Dean Budney, Robert D. Villwock
Abstract: A binary composition of 1,3,3,3-tetrafluoropropene and ammonia, as well as to the use thereof, in particular as a heat-transfer fluid. The composition may include from 40% to 99% of ammonia and from 1% to 60% of 1,3,3,3-tetrafluoropropene; preferably from 60% to 98% of ammonia and from 2% to 40% of 1,3,3,3-tetrafluoropropene; preferably from 70% to 95% of ammonia and from 5% to 30% of 1,3,3,3-tetrafluoropropene; preferably from 75% to 90% of ammonia and from 10% to 25% of 1,3,3,3-tetrafluoropropene; preferably from 78% to 85% of ammonia and from 15% to 22% of 1,3,3,3-tetrafluoropropene. The 1,3,3,3-tetrafluoropropene may be in the cis form or in the trans form or is a mixture of cis form and trans form and in which, preferably, at least 80% or at least 90% or at least 95% or at least 98% or at least 99% of the 1,3,3,3-tetrafluoropropene is in the trans form.
Abstract: Combinations of gelatinous elastomer containing one or more phase change materials, known as “phase change gel”, and polyurethane foam may be made by introducing at least partially cured phase change gel particles comprising plasticized triblock copolymer resin and/or diblock copolymer resin and one or more phase change materials, into a mixture of polyurethane foam-forming components including a polyol and an isocyanate. The phase change gel can be crosslinked to form a cured gelatinous gel, which is then reduced in size before introduction. After the foam-forming components polymerize to make polyurethane foam, the phase change gel particles are discrete visible particles dispersed throughout the foam. The polyurethane reaction is exothermic and can generate sufficient temperature to at least partially melt the styrene-portion of the triblock copolymer resin thereby extending the crosslinking.
Abstract: Polymeric foams and elastomer/hydrogel bicontinuous composite structures derived from high internal phase emulsions and possessing shape-memory characteristics are disclosed, as well as processes for forming the same and uses thereof in, for example, manufacturing of various articles.
Type:
Grant
Filed:
May 13, 2013
Date of Patent:
December 30, 2014
Assignee:
Technion Research & Development Foundation Limited
Inventors:
Michael S. Silverstein, Inna Gurevitch, Christine Warwar
Abstract: A fire-resistant polyurethane foam is provided. A hydroxyl-containing inorganic fire retardant is premixed with a polyisocyanate and a polyol, respectively, to form two premixtures. Then, the two premixtures are mixed for reaction to form a fire-resistant polyurethane foam. Preferably, a combination of different particle sizes of the fire retardant is employed to maximize the amount of the fire retardant and increase the fire resistance of the foam.
Type:
Grant
Filed:
November 6, 2013
Date of Patent:
October 21, 2014
Assignee:
Industrial Technology Research Institute
Abstract: One component polyurethane foam forming compositions are provided which contain a rodent repellent yet have shelf life stability of at least 6 months at 20° C. Two component polyurethane foam forming compositions are also provided.
Type:
Application
Filed:
March 15, 2013
Publication date:
September 18, 2014
Applicant:
CLAYTON CORPORATION
Inventors:
Nickolas R. Yeates, Jay Yuan Zhang, Timothy A. Niemeyer, Timothy L. Franklin