Manufactured natural pozzolan, improved manufactured natural pozzolan-based cement and method of making and using same
US-10155695-B2 · Dec 18, 2018 · US
Additive-incorporated building materials
US10315953B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10315953-B2 |
| Application number | US-201615549344-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 7, 2016 |
| Priority date | Feb 8, 2015 |
| Publication date | Jun 11, 2019 |
| Grant date | Jun 11, 2019 |
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- Title
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Abstract
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Bismuth oxyhalide-added building materials are disclosed. The building material is a binder-containing building material, which sets and harden when mixed with water, such as gypsum and cement-based building material. Methods for applying bismuth oxyhalide—comprising coatings onto surfaces of building materials, to protect them against pollutants, are described.
First claim
Opening claim text (preview).
The invention claimed is: 1. Bismuth oxyhalide-added gypsum, wherein the bismuth oxyhalide is selected from the group consisting of BiOCl y Br 1-y [0.6≤y≤0.95]; Bi (0) doped-BiOCl; Bi (0) doped-BiOBr; and Bi (0) doped-BiOCl y Br 1-y [0.6≤y≤0.95]. 2. Bismuth oxyhalide-added gypsum according to claim 1 , which is bismuth oxyhalide-coated gypsum, wherein the bismuth oxyhalide-coated gypsum has bismuth oxyhalide particles that are located in a bismuth oxyhalide-containing surface layer deposited on a gypsum-made base, with said gypsum-made base being essentially free of bismuth oxyhalide particles. 3. Bismuth oxyhalide-added gypsum according to claim 2 , wherein the thickness of the bismuth oxyhalide-containing surface layer is from 4 to 100 μm. 4. Bismuth oxyhalide-added gypsum according to claim 1 , wherein the bismuth oxyhalide is selected from the group consisting of BiOCl y Br 1-y [0.6≤y≤0.95] and Bi (0) doped-BiOCl y Br 1-y [0.6≤y≤0.95]. 5. Bismuth oxyhalide-added gypsum according to claim 4 , wherein the bismuth oxyhalide is BiOCl y Br 1-y [0.6≤y≤0.95]. 6. Bismuth oxyhalide-added gypsum according to claim 5 , wherein the bismuth oxyhalide is BiOCl y Br 1-y [0.75≤y≤0.90]. 7. Bismuth oxyhalide-added gypsum according to claim 6 , wherein the BiOCl y Br 1-y is BiOCl 0.8±δ Br 0.2±δ (0.01≤δ≤0.05). 8. A method for preparing bismuth oxyhalide-coated gypsum, comprising mixing plaster of Paris powder (CaSO 4 .0.5H 2 O) and water, allowing a so-formed mass to set and harden partially, applying onto the surface of the mass an aqueous suspension of bismuth oxyhalide microspheres selected from the group consisting of BiOCl y Br 1-y [0.6≤y≤0.95]; Bi (0) doped-BiOCl; Bi (0) doped-BiOBr; and Bi (0) doped-BiOCl y Br 1-y [0.6≤y≤0.95], and allowing the mass to dry and solidify.
Assignees
Inventors
Classifications
Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride · CPC title
Calcium-sulfate · CPC title
- C04B20/1066Primary
Oxides, Hydroxides · CPC title
Self-cleaning materials, e.g. using lotus effect · CPC title
as one or more layers of a layered structure · CPC title
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Frequently asked questions
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- What does patent US10315953B2 cover?
- Bismuth oxyhalide-added building materials are disclosed. The building material is a binder-containing building material, which sets and harden when mixed with water, such as gypsum and cement-based building material. Methods for applying bismuth oxyhalide—comprising coatings onto surfaces of building materials, to protect them against pollutants, are described.
- Who is the assignee on this patent?
- Yissum Res Dev Co Of Hebrew Univ Jerusalem Ltd
- What technology area does this patent fall under?
- Primary CPC classification C04B20/1066. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 11 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).