Mineral composition, especially for use in paper fillers and paper or plastic coatings
US-2015376022-A1 · Dec 31, 2015 · US
Methods for producing a dispersion containing silicon dioxide particles and cationization agent
US8980960B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980960-B2 |
| Application number | US-201113642862-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 23, 2011 |
| Priority date | Jul 9, 2010 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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Process for preparing a dispersion comprising silicon dioxide particles and cationizing agents, by dispersing 50 to 75 parts by weight of water, 25 to 50 parts by weight of silicon dioxide particles having a BET surface area of 30 to 500 m 2 /g and 100 to 300 μg of cationizing agent per square meter of the BET surface area of the silicon dioxide particles, wherein the cationizing agent is obtainable by reacting at least one haloalkyl-functional alkoxysilane, hydrolysis products, condensation products and/or mixtures thereof with at least one aminoalcohol and water; and optionally removing the resulting hydrolysis alcohol from the reaction mixture. Also the process for preparing the dispersion, wherein the cationizing agent comprises one or more quaternary, aminoalcohol-functional, organosilicon compounds of formula III and/or condensation products thereof, wherein Ru and Rv are independently C 2-4 alkyl group, m is 2-5 and n is 2-5.
First claim
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The invention claimed is: 1. A process for preparing a dispersion comprising silicon dioxide particles and a cationizing agent, the process comprising: mixing a) 50 to 75 parts by weight of water, b) 25 to 50 parts by weight of silicon dioxide particles having a BET surface area of 30 to 500 m 2 /g, and c) an amount based on 100 to 300 μg of a cationizing agent per square meter of the BET surface area of the silicon dioxide particles, to obtain a dispersion, wherein the amount o…
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Chemistry & Metallurgy · mapped topic
- B41M5/5218Primary
Operations & Transport · mapped topic
Textiles & Paper · mapped topic
Operations & Transport · mapped topic
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- What does patent US8980960B2 cover?
- Process for preparing a dispersion comprising silicon dioxide particles and cationizing agents, by dispersing 50 to 75 parts by weight of water, 25 to 50 parts by weight of silicon dioxide particles having a BET surface area of 30 to 500 m 2 /g and 100 to 300 μg of cationizing agent per square meter of the BET surface area of the silicon dioxide particles, wherein the cationizing agent is obtai…
- Who is the assignee on this patent?
- Scharfe Stefan, Heuschen Andrea, Batz-Sohn Christoph, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification B41M5/5218. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 17 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).