Fluid loss control agents and compositions for cementing oil and gas wells comprising said fluid loss control agent
US-9458372-B2 · Oct 4, 2016 · US
Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures
US10081573B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10081573-B2 |
| Application number | US-201615137902-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 25, 2016 |
| Priority date | Apr 29, 2015 |
| Publication date | Sep 25, 2018 |
| Grant date | Sep 25, 2018 |
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- Title
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Abstract
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Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures wherein the compositions are suitable for modifying or improving certain properties of the cementitious mixtures. The compositions include a superabsorbent polymer (SAP) hydrogel having a macromolecular network structure, and at least one pozzolanic material that is chemically incorporated into the macromolecular network structure of the SAP hydrogel.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for use as a curing agent in a cementitious mixture, the composition comprising: a superabsorbent polymer (SAP) hydrogel having a macromolecular network structure; and at least one pozzolanic material that is chemically incorporated into the macromolecular network structure of the SAP hydrogel, the at least one pozzolanic material being Class C fly ash, silica fume, metakaolin, rice husk ash, Class F fly ash, slag, calcined shale, or any combination thereof. 2. The composition of claim 1 , wherein the composition contains more than one pozzolanic material. 3. The composition of claim 1 , wherein the composition includes 0.5 to 90 percent by weight of the pozzolanic material incorporated into the SAP hydrogel. 4. The composition of claim 1 , wherein the composition further comprises ungrafted polymer incorporated into the macromolecular network structure of the SAP hydrogel. 5. The composition of claim 1 , wherein the composition includes 75 to 90 percent by weight of the pozzolanic material incorporated into the SAP hydrogel.
Assignees
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Classifications
Frost-thaw resistance · CPC title
- C04B24/2652Primary
Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles · CPC title
High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC] · CPC title
Water-absorbing polymers, hydrophilic polymers · CPC title
Water-swellable polymers · CPC title
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- What does patent US10081573B2 cover?
- Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures wherein the compositions are suitable for modifying or improving certain properties of the cementitious mixtures. The compositions include a superabsorbent polymer (SAP) hydrogel having a macromolecular network structure, and at least one pozzolanic material that is chemically in…
- Who is the assignee on this patent?
- Purdue Research Foundation
- What technology area does this patent fall under?
- Primary CPC classification C04B24/2652. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 25 2018 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).