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US-2024384050-A1 · Nov 21, 2024 · US
Process for producing a polyurethane foam and polyurethane foam obtainable therefrom
US9023909B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9023909-B2 |
| Application number | US-201013505785-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 3, 2010 |
| Priority date | Nov 6, 2009 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
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Process for producing a polyurethane foam and polyurethane foam obtainable therefrom A process for producing a polyurethane foam with bimodal cell size distribution, comprising the following steps: providing a mixture in a mixing head, where the mixture comprises: A) a component reactive towards isocyanates; B) a surfactant component; C) a blowing agent component selected from the group consisting of linear, branched or cyclic C 1 - to C 6 -alkanes, linear, branched or cyclic C 1 - to C 6 -fluoroalkanes, N 2 , O 2 , argon and/or CO 2 , where blowing agent component C) is present in the supercritical or near-critical state; D) a polyisocyanate component; discharging the mixture comprising components A), B), C), and D) from the mixing head where, during the discharge of the mixture, the pressure prevailing in the mixture is lowered to atmospheric pressure.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing a polyurethane foam, comprising the following steps: providing a mixture in a mixing head, where the mixture comprises: A) a component reactive towards isocyanates; B) a surfactant component; C) a blowing agent component selected from the group consisting of linear, branched or cyclic C 1 - to C 6 -alkanes, linear, branched or cyclic C 1 - to C 6 -fluoroalkanes, N 2 , O 2 , argon and/or CO 2 ; wherein the blowing agent co…
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Classifications
Chemistry & Metallurgy · mapped topic
- C08J9/0042Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9023909B2 cover?
- Process for producing a polyurethane foam and polyurethane foam obtainable therefrom A process for producing a polyurethane foam with bimodal cell size distribution, comprising the following steps: providing a mixture in a mixing head, where the mixture comprises: A) a component reactive towards isocyanates; B) a surfactant component; C) a blowing agent component selecte…
- Who is the assignee on this patent?
- Lindner Stefan, Friederichs Wolfgang, Strey Reinhard, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification C08J9/0042. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 05 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).