Method for producing large-diameter sio2 powder, and cosmetic composition containing same
US-2024208830-A1 · Jun 27, 2024 · US
Precipitated silicas for storage-stable RTV-1 silicone rubber formulations without stabilizer
US9738535B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9738535-B2 |
| Application number | US-26268408-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 31, 2008 |
| Priority date | Nov 2, 2007 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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Abstract
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A precipitated silica having an SiOH isolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm 2 , a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.
First claim
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The invention claimed is: 1. A sealant comprising: a one component room-temperature vulcanizing silicone rubber composition (RTV-1K); and a precipitated silica; wherein the precipitated silica has physiochemical properties comprising: an SiOH isolated absorbance ratio of from 1.5 to 10, a silanol group density of 1 to 3.0 SiOH/nm 2 , a modified tapped density of 1 to 50 g/l, and a pH of 3 to 5, wherein the pH is measured as a aqueous suspension of 5.00 g of the precip…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C01B33/193Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9738535B2 cover?
- A precipitated silica having an SiOH isolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm 2 , a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabiliz…
- Who is the assignee on this patent?
- Panz Christian, Obladen Helga, Meier Karl, and 7 more
- What technology area does this patent fall under?
- Primary CPC classification C01B33/193. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 22 2017 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).