Polymers, co-polymers, and monomers using co2 as a reagent
US-2015376331-A1 · Dec 31, 2015 · US
Process for the activation of double metal cyanide catalysts for the preparation of polyether carbonate polyols
US8933192B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933192-B2 |
| Application number | US-201113574146-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 18, 2011 |
| Priority date | Jan 20, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts for the preparation of polyether carbonate polyols by catalytic copolymerisation of carbon dioxide (CO 2 ) with alkylene oxides in the presence of one or more H-functional starter substances.
First claim
Opening claim text (preview).
The invention claimed is: 1. Process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, which comprises (a) placing the double metal cyanide catalyst and the H-functional starter substance, or a mixture of at least two H-functional starter substances, in a reaction vessel, (b) for activation (b1) adding in a first activation step,…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G64/34Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8933192B2 cover?
- The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts for the preparation of polyether carbonate polyols by catalytic copolymerisation of carbon dioxide (CO 2 ) with alkylene oxides in the presence of one or more H-functional starter substances.
- Who is the assignee on this patent?
- Gürtler Christoph, Grasser Stefan, Hofmann Jörg, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08G64/34. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 13 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).