Mixtures of brominated diphenylethanes, method of preparing the same and resin composition using the same
US8354464B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 8, 2009 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Mar 6, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/03
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A mixture of brominated diphenylethanes is prepared by brominating diphenylethanes, comprises hexabromodiphenylethane, heptabromodiphenylethane and octabromodiphenylethane, comprises about 55 to about 85% by weight hexabromodiphenylethane, and comprises about 0.01 to about 30% by weight diphenylethanes substituted with an odd number of bromines. The mixture of brominated diphenylethanes can provide improved compatibility with polymer resins, as well as impart excellent flame retardancy and improved weatherability and thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.