Method for producing water-absorbent resin
US-9221030-B2 · Dec 29, 2015 · US
Method for polymerisation of (meth)acrylic acid in solution, polymer solutions obtained and their uses
US9150722B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9150722-B2 |
| Application number | US-201314037622-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 26, 2013 |
| Priority date | Sep 26, 2012 |
| Publication date | Oct 6, 2015 |
| Grant date | Oct 6, 2015 |
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Abstract
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The present invention relates to a new solvent-free preparation method of a (meth)acrylic acid polymer in solution, where said polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3 by radical polymerization, the polymers obtained by this means, and their applications in industry.
First claim
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The invention claimed is: 1. A method for the organic solvent-free preparation of a (meth)acrylic acid polymer in solution, where said (meth)acrylic acid polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3, said method comprising: a) introducing water, and optionally a water-soluble metal salt-based catalyst, into a synthesis reactor, b) heating the synthesis reactor to a temperature of at least 60° C., c) continuously and simulta…
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- What does patent US9150722B2 cover?
- The present invention relates to a new solvent-free preparation method of a (meth)acrylic acid polymer in solution, where said polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3 by radical polymerization, the polymers obtained by this means, and their applications in industry.
- Who is the assignee on this patent?
- Coatex Sas
- What technology area does this patent fall under?
- Primary CPC classification C08F20/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 06 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).