公开(公告)号：US20160333165A1

公开(公告)日：2016-11-17

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

IPC: C08J11/08 ,  B33Y40/00 ,  B33Y70/00 ,  B29C67/00

CPC classification number: C08J11/08 ,  B29C64/35 ,  B29C64/40 ,  B33Y40/00 ,  B33Y70/00 ,  C08J2301/26 ,  Y02W30/701

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.

Abstract translation: 本发明涉及用于回收在添加剂制造过程中使用的支撑材料的方法。 该方法包括将由水溶性载体聚合物和不溶性材料组成的前体添加剂制品暴露于水中。 水溶性载体聚合物溶于水中。 然后将剩下的物品从水中取出。 溶解的水溶性聚合物从水中沉淀出来。 将沉淀的聚合物与水分离，并除去任何剩余的水以回收水溶性载体聚合物。 然后可以将回收的水溶性载体聚合物再次用于制备另外的添加剂制品。

公开(公告)号：US20150299045A1

公开(公告)日：2015-10-22

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: C04B35/185

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：US20210299948A1

公开(公告)日：2021-09-30

申请号：US17264737

申请日：2019-07-12

Applicant: Dow Global Technologies LLC

Inventor： Craig F. Gorin ,  Sanjib Biswas ,  Sharon Allen ,  Scott T. Matteucci ,  Daniel L. Dermody ,  Harpreet Singh ,  Aleksander J. Pyzik

IPC: B29C64/118 ,  B33Y70/00 ,  B33Y10/00 ,  B29C48/50

Abstract: A method of fused filament fabrication (FFF) additive manufacturing comprises employing a thermoplastic blend comprised of high density polyethylene and a second thermoplastic polymer, wherein the second polymer is a low density polyethylene (LDPE), functionalized polyolefin or combination thereof and the amount of high density polyethylene to the amount of second thermoplastic polymer by weight is a ratio from 1.5/1 to 20/1. LDPE means a polyethylene that have been radically polymerized at high pressure. The method allows for the additive manufacturing article that retains the desirable mechanical properties of HDPE without experiencing the problems inherent in FFF printing of HDPE or use of solid fillers. In a particular embodiment, the additive manufactured article has a continuous phase and the second thermoplastic polymer is present as a discontinuous phase within the additive article manufactured article and the filament used to make the article.

公开(公告)号：US20190248065A1

公开(公告)日：2019-08-15

申请号：US16312370

申请日：2017-06-26

Applicant: Dow Global Technologies LLC

Inventor： Craig F. Gorin ,  Aleksander J. Pyzik ,  Sanjay C. Solanki ,  Sharon Allen ,  Daniel P. Sophiea ,  NIranjan Malvadkar ,  Daniel L. Dermody

IPC: B29C64/118 ,  C08G18/12

CPC classification number: B29C64/118 ,  B29C64/106 ,  B29C2945/76892 ,  B29K2075/00 ,  B29K2101/10 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08G18/12

Abstract: An additive manufactured article is comprised of at least two adhered layers of extrudates (120) comprised of a thermoset material having therein a phase change material, wherein the phase change material undergoes a phase change at a temperature less than where the thermoset material decomposes. The article may be made by dispensing a mixture comprised of an organic reactive material and phase change material forming extrudates that are 3D printed into an article having multiple layers of extrudates bound together and then allowing the organic reactive material to react forming a thermoset material having therein the phase change material to form the additive manufactured article. The shape of the article may be changed by heating to a temperature above the temperature where the phase change material undergoes a phase change while applying a force and then cooling below the phase change temperature. Likewise, the original shape may be returned by merely heating above the phase change temperature and then cooling in the absence of a force being applied.

公开(公告)号：US20190211170A1

公开(公告)日：2019-07-11

申请号：US16356625

申请日：2019-03-18

Applicant: Dow Global Technologies LLC

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

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

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.

公开(公告)号：US10214451B2

公开(公告)日：2019-02-26

申请号：US14362483

申请日：2012-12-10

Applicant: Dow Global Technologies LLC

Inventor： Aleksander J. Pyzik ,  Sharon Allen ,  Peter C. Saucier

IPC: C04B28/00 ,  C04B37/00 ,  C04B35/185 ,  C04B38/00 ,  B29L31/60

Abstract: Skins and/or adhesive layers are formed on a porous ceramic honeycomb by applying a layer of a cement composition to a surface of the honeycomb and firing the cement composition. The cement composition contains a water-swellable clay, high aspect inorganic filler particles and water, and are nearly or completely devoid of particles smaller than 100 nm and a cellulosic polymer.

公开(公告)号：US10201933B2

公开(公告)日：2019-02-12

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 ,  B33Y10/00 ,  C09D101/28 ,  C08L1/28 ,  B29K1/00 ,  B29K101/12

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：US20150037531A1

公开(公告)日：2015-02-05

申请号：US14345423

申请日：2012-11-07

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Aleksander J. Pyzik ,  Nicholas M. Shunkel ,  Robin P. Ziebarth

IPC: C04B38/00 ,  C04B35/44

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 crystalsare 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.

Abstract translation: 处理多孔含铝陶瓷体以在其孔的表面上形成针状莫来石晶体。 通过使主体与含氟气体或氟原子和硅原子的源接触而形成晶体，以在孔的表面形成氟托瓦斯，然后分解氟托吡嗪以形成针状莫来石晶体。 该过程允许陶瓷体的表面积显着增加，同时保持起始体的几何形状（尺寸，形状，通用孔结构）。 更高的表面积使得身体作为微粒过滤器更有效，并且还允许更容易地引入催化材料。

公开(公告)号：US11426924B2

公开(公告)日：2022-08-30

申请号：US16312370

申请日：2017-06-26

Applicant: Dow Global Technologies LLC

Inventor： Craig F. Gorin ,  Aleksander J. Pyzik ,  Sanjay C. Solanki ,  Sharon Allen ,  Daniel P. Sophiea ,  Niranjan Malvadkar ,  Daniel L. Dermody

IPC: B29C64/118 ,  B33Y80/00 ,  B33Y70/00 ,  B33Y10/00 ,  B29C64/106 ,  C08G18/12 ,  B29K101/10 ,  B29K75/00

Abstract: An additive manufactured article is comprised of at least two adhered layers of extrudates (120) comprised of a thermoset material having therein a phase change material, wherein the phase change material undergoes a phase change at a temperature less than where the thermoset material decomposes. The article may be made by dispensing a mixture comprised of an organic reactive material and phase change material forming extrudates that are 3D printed into an article having multiple layers of extrudates bound together and then allowing the organic reactive material to react forming a thermoset material having therein the phase change material to form the additive manufactured article. The shape of the article may be changed by heating to a temperature above the temperature where the phase change material undergoes a phase change while applying a force and then cooling below the phase change temperature. Likewise, the original shape may be returned by merely heating above the phase change temperature and then cooling in the absence of a force being applied.

公开(公告)号：US20200247041A1

公开(公告)日：2020-08-06

申请号：US15770006

申请日：2016-10-18

Applicant: Dow Global Technologies LLC

Inventor： Joshua M. Katzenstein ,  Robert S. Moglia ,  Mary Anne Leugers ,  Aleksander J. Pyzik ,  Scott T. Matteucci ,  Sharon Allen ,  Daniel L. Dermody ,  Roland Bayer

IPC: B29C64/153

Abstract: A method of selective sintering additive manufacturing comprises employing a powder comprising composite particulates comprising a first thermoplastic polymer and a second thermoplastic polymer interspersed with each other. In a particular embodiment, the first thermoplastic polymer and second thermoplastic polymer have differing absorbance of the irradiation used to sinter the particles when performing the additive manufacturing method. The first and second thermoplastic polymer may be continuously intertwined in within the particles or one of the polymers may be a discontinuously dispersed in a continuous matrix of the other polymer.