Fire extinguishing compositions and method
US-2017182341-A1 · Jun 29, 2017 · US
Compositions comprising water dispersible polymer and unsaturated dicarboxylic acid derivative suitable for enhancing char
US12163085B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12163085-B2 |
| Application number | US-202017429386-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 18, 2020 |
| Priority date | Mar 26, 2019 |
| Publication date | Dec 10, 2024 |
| Grant date | Dec 10, 2024 |
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Abstract
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A flame-retardant composition is described comprising a mixture of a water dispersible organic polymer; and a water dispersible derivative of an unsaturated dicarboxylic acid or anhydride thereof. The water dispersible derivative typically has a solubility in a 0.1 N aqueous solution of NaOH at 25° C. of at least 25 g/liter. Also described is a flame-retardant composition comprising the mixture described dispersed in an aqueous carrier and method of making a flame-retardant composition.
First claim
Opening claim text (preview).
What is claimed is: 1. A flame-retardant composition comprising: a mixture of a water dispersible organic polymer; and a water dispersible derivative having the general formula wherein X is oxygen or nitrogen; and L is a divalent linking group comprising an aromatic moiety. 2. The flame-retardant composition of claim 1 wherein the water dispersible derivative has a solubility in a 0.1 N aqueous solution of NaOH at 25° C. of at least 25 g/liter. 3. The flame-retardant composition of claim 1 wherein the water dispersible organic polymer has an onset of thermal decomposition in air at a temperature range of 200° C. to 250° C. 4. The flame-retardant composition of claim 1 wherein the water dispersible organic polymer comprises PVA, PEO, or a mixture thereof. 5. The flame-retardant composition of claim 1 wherein the water dispersible organic polymer has a hydroxyl to carbon ratio of at least 1:5. 6. The flame-retardant composition of claim 1 wherein the water dispersible organic polymer forms conjugated dienes during thermal decomposition. 7. The flame-retardant composition of claim 1 wherein the water dispersible derivative has an onset of thermal decomposition temperature greater than the onset of thermal degradation temperature of the water dispersible polymer. 8. The flame-retardant composition of claim 1 wherein upon thermal decomposition of the mixture of water dispersible polymer and water dispersible derivative a char forms and the char yield is 90% or greater of the theoretical char yield. 9. The flame-retardant composition of claim 1 wherein upon thermal decomposition of the mixture of water dispersible polymer and water dispersible derivative a chars forms of increased strength in comparison to the water dispersible polymer alone. 10. A flame-retardant composition comprising the composition of claim 1 dispersed in an aqueous carrier. 11. A method of making a flame-retardant composition comprising dispersing the composition of claim 1 in an aqueous carrier.
Assignees
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Classifications
containing nitrogen · CPC title
Flame or fire retardant/resistant · CPC title
- C08L97/005Primary
Lignin · CPC title
Five-membered rings · CPC title
Macromolecular compounds derived from lignin, e.g. tannins, humic acids · CPC title
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- What does patent US12163085B2 cover?
- A flame-retardant composition is described comprising a mixture of a water dispersible organic polymer; and a water dispersible derivative of an unsaturated dicarboxylic acid or anhydride thereof. The water dispersible derivative typically has a solubility in a 0.1 N aqueous solution of NaOH at 25° C. of at least 25 g/liter. Also described is a flame-retardant composition comprising the mixture…
- Who is the assignee on this patent?
- 3M Innovative Properties Company
- What technology area does this patent fall under?
- Primary CPC classification C08L97/005. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 10 2024 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).