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Method of improving stability of polyurethane polyol blends containing halogenated olefin blowing agent
US9868837B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9868837-B2 |
| Application number | US-201113643124-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 22, 2011 |
| Priority date | Apr 28, 2010 |
| Publication date | Jan 16, 2018 |
| Grant date | Jan 16, 2018 |
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- Title
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- Abstract
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Abstract
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The present invention is directed towards a method of stabilizing thermosetting foam blends such as polyurethane poly blends containing a blowing agent with negligible (low or zero) ozone-depletion and low GWP based upon unsaturated halogenated hydroolefins in which one or more ester is added to the thermosetting foam blends. The thermosetting foam blends typically in clued: polyol(s); surfactant(s); catalyst(s); flame retardent(s); organic acid inhibitor(s)/stabilizer(s); carbon dioxide generating agent(s). The addition of the one or more esters to the thermosetting foam blends was unexpectedly found to result in blends which were stable over time and the resulted foams have a uniform cell structure with little or no foam collapse.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of stabilizing a thermosetting foam blend premix containing a foam forming agent and a blowing agent comprising 1-chloro-3,3,3-trifluoropropene, comprising adding thereto methyl formate. 2. The method of claim 1 wherein said thermosetting foam blend further contains a surfactant, a catalyst, a flame retardent, a stabilizer/inhibitor and a carbon dioxide generating agent. 3. The method of claim 1 wherein said thermosetting foam blend premix is selected from the group consisting of polyurethane foam premixes, polyisocyanurate foam premixes, and phenolic foam premixes.
Assignees
Inventors
Classifications
- C08G18/4018Primary
Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48 · CPC title
Halogenated unsaturated hydrocarbons, e.g. H2C=CF2 · CPC title
halogenated · CPC title
Chemistry & Metallurgy · mapped topic
Mixtures of at least two compounding ingredients belonging to different one-dot groups · CPC title
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Frequently asked questions
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- What does patent US9868837B2 cover?
- The present invention is directed towards a method of stabilizing thermosetting foam blends such as polyurethane poly blends containing a blowing agent with negligible (low or zero) ozone-depletion and low GWP based upon unsaturated halogenated hydroolefins in which one or more ester is added to the thermosetting foam blends. The thermosetting foam blends typically in clued: polyol(s); surfacta…
- Who is the assignee on this patent?
- Chen Benjamin Bin, Costa Joseph S, Bonnet Philippe, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4018. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 16 2018 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).