公开(公告)号：US20190184628A1

公开(公告)日：2019-06-20

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 ,  B29C64/209 ,  C08G18/12 ,  C08G18/30 ,  C08G18/67 ,  C08K3/013

CPC classification number: B29C64/118 ,  B29C64/209 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00 ,  C08G18/10 ,  C08G18/12 ,  C08G18/307 ,  C08G18/48 ,  C08G18/672 ,  C08K3/013

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.

公开(公告)号：US20180222111A1

公开(公告)日：2018-08-09

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

IPC: B29C64/118 ,  B29C64/40 ,  C08L1/28 ,  C08J11/08

CPC classification number: B29C64/118 ,  B29C64/106 ,  B29C64/40 ,  B29K2995/0056 ,  B33Y70/00 ,  C08J11/08 ,  C08L1/28

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.

公开(公告)号：US20180147785A1

公开(公告)日：2018-05-31

申请号：US15580206

申请日：2016-06-02

Applicant: Dow Global Technologies LLC

Inventor： Roland Bayer ,  Anette Wagner ,  Aleksander J. Pyzik ,  Sharon Allen

IPC: B29C64/40 ,  B33Y70/00 ,  C09D101/28 ,  B29K1/00 ,  B33Y10/00 ,  B29K101/12

CPC classification number: B29C64/40 ,  B29K2001/08 ,  B29K2101/12 ,  B29K2995/0062 ,  B33Y10/00 ,  B33Y70/00 ,  C08L1/284 ,  C09D101/284

Abstract: A three-dimensionally printed article is comprised of a hydroxyethyl methylcellulose (HEMC) having a DS of 1.7 to 2.5 and an MS of at least 0.5, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxyethoxyl groups. The HEMC may advantageously be used as a support material when making a three-dimensionally printed article using a build material such as a different thermoplastic polymer such as a poly(acrylonitrile-butadiene-styrene), polylactic acid, polyethylene and polyprophylene. When the HEMC is a support material it may be easily removed from the build material by contacting the three dimensionally printed article with water, which may be at ambient temperatures and a pH that is neutral or close to neutral.

公开(公告)号：US09550700B2

公开(公告)日：2017-01-24

申请号：US14437580

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: C04B35/00 ,  C04B35/52 ,  C04B35/56 ,  C04B35/185 ,  C04B35/565 ,  C04B35/584 ,  C04B38/00 ,  C04B111/00

CPC classification number: C04B35/185 ,  C04B35/565 ,  C04B35/584 ,  C04B38/00 ,  C04B2111/00793 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3217 ,  C04B2235/322 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3272 ,  C04B2235/349 ,  C04B2235/442 ,  C04B2235/443 ,  C04B2235/449 ,  C04B2235/46 ,  C04B2235/6565 ,  C04B2235/6587 ,  C04B2235/661 ,  C04B2235/72 ,  C04B2235/85 ,  C04B2235/96 ,  C04B38/0006

Abstract: A porous ceramic composition having improved thermal stability is comprised of ceramic grains bonded together by grain boundary phase comprised of silica, yttrium and oxygen wherein the amount of alkali metals, alkaline earth metals and other transition metals not including rare earth metals 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包括通过由二氧化硅，钇和氧组成的晶界相结合在一起的陶瓷颗粒，其中不包括稀土金属的碱金属，碱土金属和其它过渡金属的量为至多2％ 的晶界相。

公开(公告)号：US09481605B2

公开(公告)日：2016-11-01

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: C04B35/00 ,  C04B35/185 ,  C04B35/565 ,  C04B35/584 ,  C04B35/64 ,  F01N3/021

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。

公开(公告)号：US20150011375A1

公开(公告)日：2015-01-08

申请号：US14492584

申请日：2014-09-22

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Daniel Grohol ,  Chan Han ,  Aleksander J. Pyzik

IPC: C04B35/195 ,  C04B35/185

CPC classification number: C04B35/195 ,  C04B35/185 ,  C04B41/5025 ,  C04B2235/3463 ,  C04B2235/3481

Abstract: Porous composites of mullite and cordierite are formed by firing an acicular mullite body in the presence of a magnesium source and a silicon source. In some variations of the process, the magnesium and silicon sources are present when the acicular mullite body is formed. In other variations, the magnesium source and the silicon source are applied to a previously-formed acicular mullite body. Surprisingly, the composites have coefficients of linear thermal expansion that are intermediate to those of mullite and cordierite alone, and have higher fracture strengths than cordierite at a similar porosity. Some of the cordierite forms at grain boundaries and/or points of intersection between mullite needles, rather than merely coating the needles. The presence of magnesium and silicon sources during acicular mullite formation does not significantly affect the ability to produce a highly porous network of mullite needles.

Abstract translation: 莫来石和堇青石的多孔复合材料是通过在镁源和硅源的存在下焙烧针状莫来石体形成的。 在该方法的一些变型中，当形成针状莫来石体时，存在镁和硅源。 在其它变型中，将镁源和硅源施加到预先形成的针状莫来石体上。 令人惊奇的是，复合材料的线性热膨胀系数与莫来石和堇青石单体的中间相似，并且具有比类似孔隙率的堇青石更高的断裂强度。 在莫来石针之间的晶界和/或交叉点处的一些堇青石形式，而不仅仅是涂覆针。 在针状莫来石形成过程中镁和硅源的存在并不会显着影响产生莫来石针的高度多孔网络的能力。

公开(公告)号：US20130048188A1

公开(公告)日：2013-02-28

申请号：US13663521

申请日：2012-10-30

Applicant: Dow Global Technologies LLC

Inventor： Jun Cai ,  Aleksander J. Pyzik ,  Kwanho Yang

IPC: B32B37/14 ,  C04B12/00

CPC classification number: C04B28/24 ,  C04B35/185 ,  C04B37/005 ,  C04B38/0019 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/3427 ,  C04B2235/5224 ,  C04B2235/5228 ,  C04B2235/5232 ,  C04B2235/526 ,  C04B2235/5264 ,  C04B2237/062 ,  C04B2237/064 ,  C04B2237/10 ,  C04B2237/34 ,  C04B2237/341 ,  C04B2237/36 ,  C04B2237/365 ,  C04B2237/52 ,  C04B2237/597 ,  Y10T156/10 ,  Y10T428/24149 ,  C04B14/041 ,  C04B14/303 ,  C04B14/305 ,  C04B14/324 ,  C04B14/328 ,  C04B14/4643 ,  C04B38/0074 ,  C04B35/195 ,  C04B35/565

Abstract: A ceramic honeycomb structure comprised of at least two separate smaller ceramic honeycombs that have been adhered together by a cement comprised of inorganic fibers and a binding phase wherein the smaller honeycombs and fibers are bonded together by the binding phase which is comprised of an amorphous silicate, aluminate or alumino-silicate glass and the cement has at most about 5% by volume of other inorganic particles. The cement may be made in the absence of other inorganic and organic additives while achieving a shear thinning cement, for example, by mixing oppositely charged inorganic binders in water together so as to make a useful cement for applying to the smaller honeycombs to be cemented.

公开(公告)号：US10913203B2

公开(公告)日：2021-02-09

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: B29C64/118 ,  B33Y10/00 ,  C08G61/12 ,  C08K3/04 ,  B33Y70/00 ,  C09D11/102 ,  B29K105/00

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.

公开(公告)号：US10647056B2

公开(公告)日：2020-05-12

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 ,  B33Y70/00 ,  G03F7/00 ,  G03F7/029 ,  G03F7/031 ,  G03F7/027

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.

公开(公告)号：US10259921B2

公开(公告)日：2019-04-16

申请号：US15106637

申请日：2015-01-09

Applicant: Dow Global Technologies LLC

Inventor： Roland Bayer ,  Aleksander J. Pyzik ,  Sharon Allen

IPC: D01F2/28 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00 ,  B33Y70/00 ,  C08J7/04 ,  C08B11/193 ,  B29K55/02 ,  B29K67/00 ,  B29K69/00

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.