Inorganic fine particle composite body, method for producing same, composition and cured product
US-2016137879-A1 · May 19, 2016 · US
Compositions including alpha-alumina particles and methods of their use
US11447657B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11447657-B2 |
| Application number | US-201816757578-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2018 |
| Priority date | Dec 12, 2017 |
| Publication date | Sep 20, 2022 |
| Grant date | Sep 20, 2022 |
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Abstract
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A curable composition comprises: a) 91 to 98.2 weight percent of: (i) at least one polymerizable compound containing at least one carbamylene group; or (ii) at least one polyurethane precursor system; and b) 0.2 to 9 weight percent of alpha alumina particles having a particle size distribution with a Dv50 of from 0.1 to 1 micron, wherein the weight percentages of a) and b) are based upon the total amount of a) and b). Cured compositions and their use in thermoforming are also disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. A curable composition comprising components: a) 97 to 99.8 weight percent of: at least one polymerizable compound containing at least one carbamylene group; and b) 0.2 to 3 weight percent of alpha alumina particles having a particle size distribution with a Dv50 of from 0.1 to 1 micron, wherein the weight percentages of components a) and b) are based upon the total amount of components a) and b); and c) free-radical initiator, wherein the at least one polymerizable compound comprises at least one urethane (meth)acrylate monomer, at least one urethane (meth)acrylate oligomer, at least one (meth)acrylated polyurethane, or a combination thereof. 2. The curable composition of claim 1 , wherein said free-radical initiator comprises a free-radical photoinitiator. 3. The curable composition of claim 1 , wherein the alpha alumina particles have a particle size distribution with a Dv50 of from 0.2 to 0.3 micron. 4. The curable composition of claim 1 , wherein the alpha alumina particles have a polymodal distribution. 5. A polymer composition comprising components: a) 97 to 99.8 weight percent of at least one polymer comprising a plurality of carbamylene groups, wherein the at least one polymer is covalently crosslinked; and b) 0.2 to 3 weight percent of alpha alumina particles having a particle size distribution with a Dv50 of from 0.1 to 1 micron, wherein the weight percentages of components a) and b) are based upon the total amount of components a) and b). 6. The polymer composition of claim 5 , wherein the alpha alumina particles have a particle size distribution with a Dv50 of from 0.2 to 0.3 micron. 7. The polymer composition of claim 5 , wherein the alpha alumina particles have a polymodal distribution. 8. The polymer composition of claim 5 , wherein the polymer composition comprises a film. 9. The polymer composition of claim 8 , wherein the film is supported on a substrate. 10. A method comprising thermoforming the film of claim 8 .
Assignees
Inventors
Classifications
formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates · CPC title
of aluminium · CPC title
Nanostructured additives · CPC title
- C09D175/14Primary
Polyurethanes having carbon-to-carbon unsaturated bonds · CPC title
Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols · CPC title
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- What does patent US11447657B2 cover?
- A curable composition comprises: a) 91 to 98.2 weight percent of: (i) at least one polymerizable compound containing at least one carbamylene group; or (ii) at least one polyurethane precursor system; and b) 0.2 to 9 weight percent of alpha alumina particles having a particle size distribution with a Dv50 of from 0.1 to 1 micron, wherein the weight percentages of a) and b) are based upon the to…
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification C09D175/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 20 2022 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).