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.

公开(公告)号：US20140319742A1

公开(公告)日：2014-10-30

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

CPC classification number: C04B28/001 ,  B29L2031/608 ,  C04B35/185 ,  C04B37/00 ,  C04B37/005 ,  C04B38/0006

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.

Abstract translation: 通过将一层水泥组合物施加到蜂窝体的表面并焙烧该水泥组合物，在多孔陶瓷蜂窝上形成表皮和/或粘合剂层。 水泥组合物含有水溶胀性粘土，高方位无机填料颗粒和水，几乎或完全没有小于100nm的颗粒和纤维素聚合物。

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：US20190233335A1

公开(公告)日：2019-08-01

申请号：US16312338

申请日：2017-06-26

Applicant: Dow Global Technologies LLC

Inventor： Aleksander J Pyzik ,  Craig F. Gorin ,  Janet M. Goss ,  Sharon Allen ,  Daniel P. Sophiea

IPC: C04B35/524 ,  B29C64/165 ,  B29C64/118 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y40/00 ,  B28B1/00 ,  C04B35/634 ,  C04B35/638 ,  C04B35/64 ,  C04B41/00 ,  C04B41/48 ,  C04B41/83 ,  C04B35/657

CPC classification number: C04B35/524 ,  B28B1/001 ,  B29C64/106 ,  B29C64/118 ,  B29C64/165 ,  B29K2101/10 ,  B29K2105/0002 ,  B32B18/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C04B35/14 ,  C04B35/185 ,  C04B35/45 ,  C04B35/46 ,  C04B35/495 ,  C04B35/532 ,  C04B35/553 ,  C04B35/5611 ,  C04B35/58014 ,  C04B35/6269 ,  C04B35/632 ,  C04B35/63456 ,  C04B35/638 ,  C04B35/64 ,  C04B35/657 ,  C04B35/83 ,  C04B38/0022 ,  C04B38/067 ,  C04B41/009 ,  C04B41/4853 ,  C04B41/83 ,  C04B2111/00612 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/3258 ,  C04B2235/3272 ,  C04B2235/3281 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/407 ,  C04B2235/422 ,  C04B2235/424 ,  C04B2235/428 ,  C04B2235/48 ,  C04B2235/5436 ,  C04B2235/6021 ,  C04B2235/6026 ,  C04B2235/616 ,  C04B2235/652 ,  C04B2235/96

Abstract: A porous inorganic additive manufactured article that is comprised of at least two layers of inorganic particulates bound together by a carbon binding phase throughout. The additive manufactured article may be formed by additive manufacturing using a mixture comprised of an organic reactive material and inorganic particulates, wherein the organic reactive material is subsequently reacted to form a thermoset material that forms carbon upon heating that binds the inorganic particulates together to form the porous inorganic additive manufactured article. The porous inorganic additive manufactured article may then be infiltrated with a liquid that is solidified to form a composite article or may be further heated in a differing atmosphere to form a further sintered or reacted porous inorganic article.

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.