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US 7,678,852 B2Granted
Flame retardant compositions
AssigneeCiba Corporation
InventorNikolas Kaprinidis
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Abstract
Polymer compositions are afforded flame retardancy with the incorporation of a combination of melamine polyphosphate and poly(m-phenylene methylphosphonate). The polymer compositions are for instance epoxy resins for prepegs, laminates and printed circuit boards. The epoxy resins are for example for coating electronic parts. The polymer compositions are also thermoplastics such as polyolefins or polystyrenics, useful as fibers, films or molded parts. The melamine polyphosphate may be of a fine particle size.
Claims19
A flame retardant polymer composition which comprises
- a polymer substrate and
- incorporated therein an effective flame retarding amount of
- melamine polyphosphate and poly(m-phenylene methylphosphonate),
- where the melamine polyphosphate and poly(m-phenylene methylphosphonate) flame retardants are present in a weight:weight ratio of from about 20:80 to about 80:20.
1 more element
Dependencies are inferred from the claim text.