Fluoropolyether compound, and lubricant and magnetic disc comprising same
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Active polymer polyols and a process for their production
US8987396B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8987396-B2 |
| Application number | US-201313836583-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2013 |
| Priority date | Mar 15, 2013 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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Abstract
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Polymer polyols having a solids content of greater than 40 wt. %, a total ethylene oxide content of up to 25 wt. %, and a viscosity at 25° C. of less than 15,000 centistokes are produced by reacting (1) a base polyol having active hydrogen atoms with an ethylene oxide content of from 15 to 40 wt. % that has been formed in the presence of a double metal cyanide (DMC) catalyst, (2) one or more unsaturated monomers, (3) at least one radical initiator, optionally (4) a preformed stabilizer and optionally (5) a chain transfer agent. These polymer polyols (PMPOs) are useful in the preparation of polyurethane foams and elastomers.
First claim
Opening claim text (preview).
What is claimed is: 1. A polymer polyol composition having a solids content of greater than 40% by weight, a total ethylene oxide content of up to 25%, an ethylene oxide content of up to 40% in the base polyol, and a viscosity at 25° C. of less than 15,000 centistokes comprising a reaction product of a) at least one base polyol containing active hydrogen atoms having a molecular weight of less than 3500 and a total ethylene oxide content of from 15 to 40 wt. %, and is formed in th…
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- C08G65/34Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G65/2663Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8987396B2 cover?
- Polymer polyols having a solids content of greater than 40 wt. %, a total ethylene oxide content of up to 25 wt. %, and a viscosity at 25° C. of less than 15,000 centistokes are produced by reacting (1) a base polyol having active hydrogen atoms with an ethylene oxide content of from 15 to 40 wt. % that has been formed in the presence of a double metal cyanide (DMC) catalyst, (2) one or more un…
- Who is the assignee on this patent?
- Bayer Materialscience Llc, Bayer Materialscience Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G65/34. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 24 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).