Solid dispersion comprising a highly substituted hydroxyalkyl methylcellulose
US-9962446-B2 · May 8, 2018 · US
Support materials for 3D printing
US10259921B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10259921-B2 |
| Application number | US-201515106637-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 9, 2015 |
| Priority date | Jan 16, 2014 |
| Publication date | Apr 16, 2019 |
| Grant date | Apr 16, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
The invention claimed is: 1. A three-dimensionally printed article comprising 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 and at most 5 weight percent of water, wherein the build material has a plurality of layers and at least one of the build material layers is supported by a layer of support material. 2. The article of claim 1 wherein the amount of the hydroxypropyl methylcellulose is at least 50 weight percent of the total weight of the support material. 3. The article of claim 1 wherein the hydroxypropyl methylcellulose has a DS of at least 1.4. 4. The article of claim 1 wherein the hydroxypropyl methylcellulose has a DS of from 1.6 to 2.5. 5. The article of claim 1 wherein the hydroxypropyl methylcellulose has an MS of from 0.6 to 1.7. 6. The article of claim 1 wherein the build material comprises a thermoplastic material selected from the group consisting of poly(acrylonitrile-butadiene-styrene), polycarbonate, and polylactic acid. 7. The article of claim 1 , wherein the hydroxypropyl methylcellulose has a viscosity that is up to 30 mPa·s, determined as a 2% by weight solution in water at 20° C. 8. The article of claim 1 , wherein the support material has at most 3 weight percent of water. 9. the article of claim 8 , wherein the support material has at most 1 weight percent of water.
Assignees
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Classifications
from organic cellulose esters or ethers, e.g. cellulose acetate · CPC title
using individual droplets, e.g. from jetting heads · CPC title
using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title
Alkyl ethers · CPC title
Mixed ethers, i.e. ethers with two or more different etherifying groups · CPC title
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- What does patent US10259921B2 cover?
- 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 contac…
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification B29C64/40. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 16 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).