Additive for hydraulic compositions, and hydraulic composition using same
US-2024199490-A1 · Jun 20, 2024 · US
Preparation of water-reducing composition, water-reducing composition and hydraulic composition
US2019330109A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019330109-A1 |
| Application number | US-201916393190-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 24, 2019 |
| Priority date | Apr 25, 2018 |
| Publication date | Oct 31, 2019 |
| Grant date | — |
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- Title
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Abstract
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A water-reducing composition is obtained by a method for preparing the water-reducing composition, the method including stirring a water-reducing agent, a water-soluble cellulose ether, a gum and a defoamer by a high speed stirrer, in which the water-reducing agent has a solid component concentration of 10 to 25% by weight and an Na + ion concentration of 8,500 ppm or higher, and in which a stirring element in the high speed stirrer has a peripheral speed of 8.50 m/s or higher, and the water-reducing composition has a sedimentation volume of 80% by volume or higher after being left standing for 72 hours from immediately after preparing the water-reducing composition, or being dispersion.
First claim
Opening claim text (preview).
1 . A method for preparing a water-reducing composition comprising a step of stirring a water-reducing agent, a water-soluble cellulose ether, a gum and a defoamer by a high speed stirrer, wherein the water-reducing agent has a solid component concentration of 10 to 25% by weight and an Na + ion concentration of 8,500 ppm or higher, and a stirring element in the high speed stirrer has a peripheral speed of 8.50 m/s or higher. 2 . The method of claim 1 wherein the water-reducing agent is a polycarboxylic acid base water-reducing agent. 3 . The method of claim 1 wherein the high speed stirrer is a rotor-stator type mixer or a cylindrical wall stewing mixer. 4 . A water-reducing composition comprising a water-reducing agent, a water-soluble cellulose ether, a gum and a defoamer, wherein the water-reducing agent has a solid component concentration of 10 to 25% by weight and an Na + ion concentration of 8,500 ppm or higher, and the water-reducing composition has a sedimentation volume after being left standing for 72 hours from immediately after preparing the water-reducing composition of 80% by volume or higher. 5 . A hydraulic composition comprising the water-reducing composition of claim 4 , a hydraulic substance and water.
Assignees
Inventors
Classifications
Water reducers · CPC title
- C04B40/0039Primary
Premixtures of ingredients · CPC title
containing hydraulic cements other than calcium sulfates · CPC title
Controlling the process of mixing, e.g. adding ingredients in a quantity depending on a measured or desired value (B28C7/00 takes precedence) · CPC title
- C04B24/386Primary
containing polyether side chains · CPC title
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- What does patent US2019330109A1 cover?
- A water-reducing composition is obtained by a method for preparing the water-reducing composition, the method including stirring a water-reducing agent, a water-soluble cellulose ether, a gum and a defoamer by a high speed stirrer, in which the water-reducing agent has a solid component concentration of 10 to 25% by weight and an Na + ion concentration of 8,500 ppm or higher, and in which a st…
- Who is the assignee on this patent?
- Shinetsu Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C04B40/0039. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 31 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).