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公开(公告)号：US10100168B2
公开(公告)日：2018-10-16
申请号：US15108921
申请日：2015-01-09
Applicant: Dow Global Technologies LLC
Inventor： Roland Bayer , Scott T. Matteucci , Aleksander J. Pyzik , Sharon Allen , Mary Anne Leugers , Daniel L. Dermody , Robert S. Moglia
Abstract: The inventions is directed to a method for recovering support materials used in an additive manufacturing process. The method comprises exposing a precursor additive manufactured article comprised of a water soluble support polymer and an insoluble material to water. The water soluble support polymer is dissolved in the water. The remaining article is then removed from the water. The dissolved water soluble polymer is precipitated from the water. The precipitated polymer is separated from the water and any remaining water removed to recover the water soluble support polymer. The recovered water soluble support polymer may then be re-used to make further additive manufactured articles.
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公开(公告)号：US20180036942A1
公开(公告)日：2018-02-08
申请号：US15549272
申请日：2016-02-29
Applicant: Dow Global Technologies LLC
Inventor： Paul Clark , John W. Kramer , Aleksander J. Pyzik
IPC: B29C64/135 , G03F7/031 , G03F7/029 , B33Y70/00 , G03F7/00
CPC classification number: B29C64/135 , B33Y70/00 , G03F7/0037 , G03F7/027 , G03F7/029 , G03F7/031
Abstract: A method of fabricating a three-dimensional object, the method comprising: combining at least one of a meth(acrylate), a (meth)acrylamide, a (meth)acrylonitrile, a styrene, an acrylonitrile, a vinyl acetate, a vinylcarbazole, a vinylpyridine, a vinyl ether, a vinyl chloride monomers, a polyfunctional monomer, and a polyfunctional prepolymer with an organic photoredox catalyst to provide a reaction mixture; depositing the reaction mixture; polymerizing the monomers by irradiating the reaction mixture with a light source; and repeating the depositing step until the three-dimensional object is formed.
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公开(公告)号：US09764991B2
公开(公告)日：2017-09-19
申请号：US14345423
申请日：2012-11-07
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Aleksander J. Pyzik , Nicholas M. Shinkel , Robin P. Ziebarth
CPC classification number: C04B38/0096 , C04B35/44 , C04B35/6286 , C04B35/62863 , C04B35/62884 , C04B35/62894 , C04B35/62897 , C04B38/0006 , C04B38/0054 , C04B41/009 , C04B41/5037 , C04B41/87 , C04B2235/48 , Y10T428/24149 , C04B35/10 , C04B35/185 , C04B35/19 , C04B35/195 , C04B35/478 , C04B41/4529 , C04B41/4552 , C04B41/457 , C04B41/4596
Abstract: Porous aluminum-containing ceramic bodies are treated to form acicular mullite crystals onto the surfaces of their pores. The crystals are formed by contacting the body with a fluorine-containing gas or a source of both fluorine and silicon atoms to form fluorotopaz at the surface of the pores, and then decomposing the fluorotopaz to form acicular mullite crystals. This process allows the surface area of the ceramic body to be increased significantly while retaining the geometry (size, shape, general pore structure) of the starting body. The higher surface area makes the body more efficient as a particulate filter and also allows for easier introduction of catalytic materials.
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公开(公告)号：US20170022341A1
公开(公告)日：2017-01-26
申请号：US15106637
申请日：2015-01-09
Applicant: Dow Global Technologies LLC
Inventor： Roland Bayer , Aleksander J. Pyzik , Sharon Allen
CPC classification number: C08J7/042 , B29C64/40 , B29K2055/02 , B29K2067/046 , B29K2069/00 , B33Y10/00 , B33Y30/00 , B33Y70/00 , B33Y80/00 , C08B11/193 , C08J2301/28 , C08J2455/02 , C08J2467/04 , D01F2/28
Abstract: A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.
Abstract translation: 三维打印制品包括构建材料和载体材料，载体材料包含DS至少为1.0且MS为至少0.6的羟丙基甲基纤维素，其中DS为甲氧基的取代度，MS为 羟丙氧基的摩尔取代。 支撑材料可以通过使支撑材料与水接触而从建筑材料中去除。
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公开(公告)号：US11697242B2
公开(公告)日：2023-07-11
申请号：US15747792
申请日：2016-07-20
Applicant: Dow Global Technologies LLC
Inventor： Roland Bayer , Aleksander J. Pyzik , Sharon Allen , Scott T. Matteucci
CPC classification number: B29C64/118 , B29C64/40 , B33Y70/00 , C08J11/08 , C08L1/28 , B29K2995/0056 , B33Y70/10
Abstract: A method of additive manufacturing is comprised of providing a material comprised of a ethyl cellulose polymer having an ethoxy content of 43% to 52% by mass and a plasticizer. The material is heated and dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base and successive layers of the material are adhered on the initial layer to form an additive manufactured part by repeating the aforementioned steps. The article formed of the ethyl cellulose polymer may be used in many applications such as those related to the pharmaceutical and food industries.
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Patent Agency Ranking
公开(公告)号：US10967562B2
公开(公告)日：2021-04-06
申请号：US16099571
申请日：2017-05-19
Applicant: Dow Global Technologies LLC
Inventor： Craig F. Gorin , Janet M. Goss , Aleksander J. Pyzik , Sharon Allen , Sanjay C. Solanki , Daniel P. Sophiea
IPC: B29C64/118 , C08G18/12 , C08G18/30 , B33Y70/00 , B33Y10/00 , B33Y30/00 , C08G18/10 , B33Y50/02 , C08G18/48 , B29C64/209 , C08K3/013 , C08G18/67
Abstract: An additive elastomeric manufactured part having improved surface finish is made by repeatedly extruding through a nozzle to build up layers of a material comprised of a prepolymer comprised of an isocyanate terminated prepolymer and a filler in an amount such that the material has a shear storage modulus G′ of 100,000 to 300,000 Pa measured at an oscillation rate of 1 Hz and a relaxation time of 20 seconds to 360 seconds. It has been discovered that the particular material having these rheological properties is able to improve the surface finish of the additive manufactured part without slumping and is believed to be due to surface flow of material into valleys between the extrudates as they are being built up.
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公开(公告)号：US10596726B2
公开(公告)日：2020-03-24
申请号：US15517977
申请日：2015-10-13
Applicant: Dow Global Technologies LLC
Inventor： Aleksander J. Pyzik , Scott T. Matteucci , Gary L. Jialanella , Daniel L. Dermody , Mary Anne Leugers
IPC: B29C67/00 , B29B7/90 , B33Y10/00 , B33Y30/00 , B33Y80/00 , B33Y70/00 , B29C64/106 , B29K75/00 , B29K105/00 , B29K105/16 , B29L23/00
Abstract: An additive elastomeric manufactured part having an elongation at break of at least 50% may be made by a method comprising the following. A material comprising a prepolymer and filler is first dispensed through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the material so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base. Subsequent layers are then formed on the initial layer by repeating the dispensing and movement on top of the initial layer and layers that follow.
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公开(公告)号：US20180362784A1
公开(公告)日：2018-12-20
申请号：US16060703
申请日：2016-11-18
Applicant: Dow Global Technologies LLC
Inventor： Craig F Gorin , Sanjay C. Solanki , Xin Jin , Aleksander J. Pyzik , Yuanqiao Rao
IPC: C09D11/102 , B29C64/118 , B33Y10/00 , B33Y70/00 , C08G61/12 , C08K3/04
Abstract: An additive elastomeric manufactured part is comprised of extrudates comprised of a reaction product of a multifunctional Michael donor and multifunctional Michael acceptor and a rheological modifier. The additive elastomeric manufactured part may have a high elongation and resistance to heat. Said part may be made by dispensing a mixture of the multifunctional Michael donor, multifunctional Michael acceptor, rheological modifier and a catalyst through a through a nozzle to form an extrudate deposited on a base. The base, nozzle or combination thereof is moved while dispensing the mixture so that there is horizontal displacement between the base and nozzle in a predetermined pattern to form an initial layer of the material on the base. Subsequent layers are then formed on the initial layer by repeating the dispensing and movement on top of the initial layer and layers that follow.
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29.发明申请公开(公告)号：US20170369674A1
公开(公告)日：2017-12-28
申请号：US15537237
申请日：2015-12-09
Applicant: Dow Global Technologies LLC
Inventor： Scott T. Matteucci , Aleksander J. Pyzik
IPC: C08K3/34 , B29C64/314 , B33Y70/00 , B29K77/00 , B29K105/16 , B29K509/00 , B33Y10/00
CPC classification number: C08K3/013 , B29C64/314 , B29K2077/00 , B29K2105/16 , B29K2509/00 , B33Y10/00 , B33Y70/00 , C08K3/34 , C08K3/346 , C08L77/12
Abstract: A method of fabricating a three-dimensional object, the method comprising (a) providing a polymer microfiller composite comprising a molecularly self-assembling (MSA) material and a microfiller dispersed in the MSA material; (b) depositing the polymer microfiller composite; and (c) repeating the depositing step until the three-dimensional object is formed.
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公开(公告)号：US20150284294A1
公开(公告)日：2015-10-08
申请号：US14437578
申请日：2013-03-07
Applicant: DOW GLOBAL TECHNOLOGIES LLC
Inventor： Michael T. Malanga , James J. O'Brien , Aleksander J. Pyzik , Nicholas M. Shinkel , Clifford S. Todd , Paul C. Vosejpka , Robin P. Ziebarth
IPC: C04B35/185 , F01N3/021 , C04B35/64
CPC classification number: C04B35/185 , C04B35/565 , C04B35/584 , C04B35/64 , C04B2235/322 , C04B2235/3224 , C04B2235/3229 , C04B2235/3272 , C04B2235/46 , C04B2235/6565 , C04B2235/661 , C04B2235/72 , C04B2235/85 , C04B2235/96 , F01N3/021
Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by a grain boundary phase comprised of silica, rare earth element that is Eu, Gd, Nd or mixture thereof and oxygen and optionally yttrium, wherein the grain boundary phase has a amount of an alkali, an alkaline earth metal and a transition metal other than yttrium that is at most 2% by weight of the grain boundary phase.
Abstract translation: 具有改善的热稳定性的多孔陶瓷组合物由通过由二氧化硅，作为Eu，Gd，Nd或其混合物的稀土元素和氧和任选的钇组成的晶界相结合在一起的陶瓷晶粒组成，其中晶界相具有 碱，碱土金属和除钇以外的过渡金属的量相当于晶界相的2％以下。
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