Redispersible polymer powder mixtures for use in dry-mix formulations
US-9212280-B2 · Dec 15, 2015 · US
Building composition comprising cellulose ether
US9051218B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9051218-B2 |
| Application number | US-201213993259-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2012 |
| Priority date | Dec 1, 2011 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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Cellulose ethers, wherein at least a part of the hydroxyl groups of the cellulose backbone are substituted by methoxy groups and hydroxyalkoxy groups, and optionally alkoxy groups being different from methoxy groups, having an unconventional distribution of methoxy substituents at the 2-, 3- and 6-positions of the anhydroglucose units are described. Such cellulose ethers exhibit significantly higher thermoreversible gel strengths than any known hydroxyalkyl methyl celluloses of comparable viscosity and kind and level of substitution rendering them useful as additives for building compositions such as cement based tile adhesives. In particular, such cellulose ethers can be used to improve the attainable adhesion strength after heat storage conditioning and the temporal setting characteristics of a building composition.
First claim
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The invention claimed is: 1. A building composition comprising at least one hydraulically setting material and at least one cellulose ether, wherein at least a part of the hydroxyl groups of the cellulose backbone of the at least one cellulose ether are substituted by methoxy groups and hydroxyalkoxy groups such that (S 23 /S 26 −0.2*MS) is 0.38 or less, wherein MS is the molar substitution of hydroxyalkoxy groups and S 23 represents the molar fraction of the anhydroglucose units,…
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Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9051218B2 cover?
- Cellulose ethers, wherein at least a part of the hydroxyl groups of the cellulose backbone are substituted by methoxy groups and hydroxyalkoxy groups, and optionally alkoxy groups being different from methoxy groups, having an unconventional distribution of methoxy substituents at the 2-, 3- and 6-positions of the anhydroglucose units are described. Such cellulose ethers exhibit significantly h…
- Who is the assignee on this patent?
- Kiesewetter Rene, Grote Grit, Brackhagen Meinolf, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C04B24/383. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 09 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).