Method for preparing catalyst
US-2017341070-A1 · Nov 30, 2017 · US
Method for producing polyoxyalkylene alkyl ether carboxylic acid and salt thereof
US8940933B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940933-B2 |
| Application number | US-201013519703-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 22, 2010 |
| Priority date | Dec 28, 2009 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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The present invention provides a method for producing polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, including supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor containing a noble metal catalyst to oxidize the polyoxyalkylene alkyl ether with oxygen, in which the molar ratio of the salt of polyoxyalkylene alkyl ether carboxylic acid to the polyoxyalkylene alkyl ether in the continuous stirred tank reactor is controlled to 0.33 to 49.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, comprising continuously supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor in the presence of a noble metal catalyst in a reaction system that conducts both continuous supply of the materials into the stirred tank and continuous extraction of a product from the stirred tank to control the reaction in order to have the molar…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- B01J23/6447Primary
Operations & Transport · mapped topic
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- What does patent US8940933B2 cover?
- The present invention provides a method for producing polyoxyalkylene alkyl ether carboxylic acid and a salt thereof, including supplying polyoxyalkylene alkyl ether, oxygen, and water to a continuous stirred tank reactor containing a noble metal catalyst to oxidize the polyoxyalkylene alkyl ether with oxygen, in which the molar ratio of the salt of polyoxyalkylene alkyl ether carboxylic acid t…
- Who is the assignee on this patent?
- Shirasawa Takeshi, Amishige Yasuo, Omae Kaoru, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B01J23/6447. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 27 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).