| 摘要 |
Halogen-free flame retardant compositions comprising thermoplastic elastomers, which exhibit flame retardance and low-smoke emission. The flame retardant compositions comprise a) one or more thermoplastic elastomers, and b) from at or about 18 to at or about 50 weight percent, the weight percentage being based on the total weight of the flame retardant composition, of a flame retardant mixture comprising: b1) at least one flame retardant comprising a phosphinate, diphosphinate and/or polymers thereof, b2) a phosphorous-containing amino composition; and b3) a zeolite. |
| 主权项 |
1. A flame retardant polymer composition comprising:
a) one or more thermoplastic elastomers; and b) from at or about 18 to at or about 50 weight percent, based on the total weight of the flame retardant polymer composition, of a flame retardant mixture comprising:
b1) at least one flame retardant comprising a material selected from the group consisting of phosphinates of the formula (I); diphosphinates of the formula (II); polymers of (I); polymers of (II); and mixtures of two or more thereof wherein R1 and R2 are independently selected from hydrogen, linear or branched C1-C6 alkyl groups, and aryl groups; R3 is a linear or branched C1-C10-alkylene group, a C6-C10-arylene group, an alkylarylene group or an arylalkylene group; M is selected from the group consisting of calcium, magnesium, aluminum, zinc and mixtures thereof; m is 2 to 3; n is 1 or 3; and x is 1 or 2;b2) a phosphorous-containing amino composition selected from the group consisting of melamine phosphates, derivatives of melamine phosphates and mixtures thereof, reaction products of ammonia with phosphoric acid, polyphosphates of said reaction products, and mixtures thereof; andb3) a zeolite,wherein i) b1) is present in the flame retardant polymer composition in an amount greater than or equal to 15 weight percent based on the total weight of the flame retardant polymer composition, and ii) b2) is present in the flame retardant mixture in an amount such that the amount of b2) is less than the amount of b1). |
