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US-2016340230-A1 · Nov 24, 2016 · US
Fluoroaluminosilicate glass powder and production method thereof
US9102813B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102813-B2 |
| Application number | US-201314039461-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 27, 2013 |
| Priority date | Sep 28, 2012 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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[Problems to be Solved] To provide fluoroaluminosilicate glass powder enabling to improve acid resistance of dental glass ionomor cement and a production method thereof. [Solution] A lanthanum compound eluted in the presence of polycarboxylic acid and water exists only in a surface layer of a fluoroaluminosilicate glass powder. An amount of the fluoroaluminosilicate glass powder is preferably 1 to 5% by weight in terms of oxide. The fluoroaluminosilicate glass powder is produced by mixing an aqueous solution of a lanthanum compound and a fluoroaluminosilicate glass powder not containing lanthanum, and heating them. The aqueous solution of lanthanum compound is an aqueous solution of a water solvable lanthanum compound, preferably an aqueous solution of lanthanum nitrite and/or an aqueous solution of lanthanum chloride.
First claim
Opening claim text (preview).
What is claimed is: 1. Fluoroaluminosilicate glass powder, comprising a lanthanum compound directly bonded to the powder, wherein the lanthanum compound to be eluted in a presence of polycarboxylic acid and water exists only in a surface layer of the powder. 2. The fluoroaluminosilicate glass powder according to claim 1 , wherein of the lanthanum compound is present in an amount of 1 to 5% by weight in terms of oxide. 3. A method of producin…
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Human Necessities · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
Chemistry & Metallurgy · mapped topic
- C03C3/112Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9102813B2 cover?
- [Problems to be Solved] To provide fluoroaluminosilicate glass powder enabling to improve acid resistance of dental glass ionomor cement and a production method thereof. [Solution] A lanthanum compound eluted in the presence of polycarboxylic acid and water exists only in a surface layer of a fluoroaluminosilicate glass powder. An amount of the fluoroaluminosilicate glass powd…
- Who is the assignee on this patent?
- G C Dental Ind Corp
- What technology area does this patent fall under?
- Primary CPC classification C03C3/112. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 2015 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).