Flame retardant fillers prepared from bridged polysilsesquioxanes
US-9255185-B2 · Feb 9, 2016 · US
Flame retardant fillers prepared from bridged polysilsesquioxanes
US9512274B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9512274-B2 |
| Application number | US-201615006303-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2016 |
| Priority date | Aug 13, 2012 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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Abstract
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A flame retardant filler includes a bridged polysilsesquioxane prepared by sol-gel polymerization. In an exemplary synthetic method, a bridged polysilsesquioxane-based flame retardant filler is prepared by sol-gel polymerization of a monomer having two or more trialkoxysilyl groups attached to an organic bridging group that contains a fire retardant group (e.g., a halogen atom, a phosphinate, a phosphonate, a phosphate ester, and combinations thereof). Bridged polysilsesquioxane particles formed by sol-gel polymerization of (((2,5-dibromo-1,4-phenylene)bis(oxy))bis(ethane-2,1-diyl))bis(trimethoxysilane), for example, and follow-on sol-gel processing may serve both as a filler for rheology control (viscosity, flow, etc.) and a flame retardant.
First claim
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What is claimed is: 1. A flame retardant filler, comprising: a bridged polysilsesquioxane prepared by sol-gel polymerization of a monomer comprising two or more trialkoxysilyl groups attached to an organic bridging group, wherein the organic bridging group has a backbone portion that includes at least two oxygen atoms, and wherein the organic bridging group is halogenated. 2. The flame retardant filler as recited in claim 1 , wherein the monomer is represented by the following formula: 3. The flame retardant filler as recited in claim 1 , wherein the monomer is represented by the following formula: 4. A flame retardant filler, comprising: a bridged polysilsesquioxane prepared by sol-gel polymerization of a monomer comprising two or more trialkoxysilyl groups attached to an organic bridging group, wherein the organic bridging group has a backbone portion that includes at least one phosphorous atom. 5. The flame retardant filler as recited in claim 4 , wherein the monomer is represented by the following formula: wherein R 1 , R 2 and R 3 are organic substituents. 6. A flame retardant filler, comprising: a bridged polysilsesquioxane prepared by sol-gel polymerization of a monomer comprising two or more trialkoxysilyl groups attached to an organic bridging group, wherein the bridging group contains a fire retardant group selected from a halogen atom, a phosphinate, a phosphonate, a phosphate ester, and combinations thereof. 7. The flame retardant filler as recited in claim 6 , wherein the bridging group contains at least two bromine atoms as the fire retardant group and the monomer is represented by the following formula: 8. The flame retardant filler as recited in claim 6 , wherein the bridging group contains at least four bromine atoms as the fire retardant group and the monomer is represented by the following formula: 9. The flame retardant filler as recited in claim 6 , wherein the bridging group contains a phosphinate as the flame retardant group and the monomer is represented by the following formula: wherein R 1 , R 2 and R 3 are organic substituents.
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Classifications
use in electrical or conductive gadgets · CPC title
Compositions of unspecified macromolecular compounds · CPC title
- C08G77/24Primary
halogen-containing groups · CPC title
Chemistry & Metallurgy · mapped topic
reinforced, e.g. by fibres, fabrics (H05K1/036 takes precedence) · CPC title
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- What does patent US9512274B2 cover?
- A flame retardant filler includes a bridged polysilsesquioxane prepared by sol-gel polymerization. In an exemplary synthetic method, a bridged polysilsesquioxane-based flame retardant filler is prepared by sol-gel polymerization of a monomer having two or more trialkoxysilyl groups attached to an organic bridging group that contains a fire retardant group (e.g., a halogen atom, a phosphinate, a…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification C08G77/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 06 2016 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).