Method of improving mechanical strength of flexible polyurethane foams made from bio-based polyols, the polyol compositions utilized therein and the foams produced thereby
US-9212250-B2 · Dec 15, 2015 · US
Branched poly(trimethylene ether) polyols
US8946485B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8946485-B2 |
| Application number | US-201113220030-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 29, 2011 |
| Priority date | Nov 19, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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Disclosed is branched poly(trimethylene ether) polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether) polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a M n of about 200 to about 6000. The polyols are useful in the preparation of polyurethane rigid and flexible foams.
First claim
Opening claim text (preview).
What is claimed is: 1. A branched amorphous poly(trimethylene ether) polyol comprising repeating units of Formula I, Formula II, and Formula III wherein R is methyl and Q is selected from Formula (IIIa) and (IIIb): wherein m is 1-20 and n is 1 to 3, and further…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08G18/4288Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US8946485B2 cover?
- Disclosed is branched poly(trimethylene ether) polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether) polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a M n of abo…
- Who is the assignee on this patent?
- Fenyvesi Gyorgyi, Poladi Raja Hari, Sunkara Hari Babu, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4288. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 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).